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            5                                 4                    3                            2                                                1




                8S661FXMTIU-IU Schematics                                                              Revision : 1.0

    SHEET                       TITLE                                  SHEET                   TITLE
D                                                                                                                                                                                     D


    1           COVER SHEET                                            32      RTL8100C 10/100 LAN

    2           BOM & PCB MODIFY HISTORY                               33      VGA CONNECTOR

    3           BLOCK DIAGRAM

    4,5,6       INTEL CPU_WMT_478

    7-10        SIS661FX (NORTH BRIDGE) HOST; DDR; AGP,HYPER ZIP

    11-14       SIS964L (SOUTH BIRDGE)

    15          CLOCK GENERATOR (ICS952018AF), BUFFER(ICS93722)
C                                                                                                                                                                                     C

    16,17       DDR SDRAM DIMMS 1,2

    18          AGP SLOT

    19          PCI SLOT 1,2,3

    20          IDE,FRONT USB,PCIRST#

    21          LPCIO_IT8705

    22          BIOS

    23          COM,PRT,FDD,KB/MS,IR
B                                                                                                                                                                                     B

    24          AC 97 ALC655

    25          AUDIO JACK,SPDIF

    26          FAN, IR

    27          PANEL,STR LED,FANS ,CPU GN

    28          VCORE PWM FAN5019 + FAN5009

    29          VDDQ,VCC18,VTT_GMCH    DC POWER                                                                                                      PCB Size: 244*230 mm

                                                                                                                                                              COMPONENT SIDE
                                                                                                                                                              (1 oz. Copper)
    30          ATX CONN, GPIO LIST                                                                                                                           VCC LAYER
                                                                                                                                                              (1 oz. Copper)
                                                                                                                                                              GND LAYER
A                                                                                                                                                             (1 oz. Copper)          A
    31          DDR POWER                                                                                                                                     SOLDER SIDE
                                                                                                                                                              (1 oz. Copper)



                                                                                                                                      GIGABYTE
                                                                                                          Title
                                                                                                                                      COVER SHEET
                                                                                                          Size   Document Number                                               Rev
                                                                                                          Custom                                                                1.0
                                                                                                                                            8S661FXMTIU-IU
                                                                                                          Date:   Thursday, June 16, 2005        Sheet    1       of    33
            5                                 4                    3                            2                                                1
                   5                   4            3                  2                                                1




             Model Name: 8S661FXMTIU-IU             Circuit or PCB layout change
                                                    for next version
                                  Version: 1.0        Date   Change Item                    Reason
D                                                                                                                                                        D




    Component value change history
     Date          Change Item             Reason
     2005/05/04
        0.1       First Release
     2005/06/15
        1.0       PVT BOM




C                                                                                                                                                        C




B                                                                                                                                                        B




A                                                                                                                                                        A




                                                                                                                      GIGABYTE
                                                                                   Title
                                                                                                    BOM & PCB MODIFY HISTORY
                                                                                   Size     Document Number                                       Rev
                                                                                   Custom                                                          1.0
                                                                                                                      8S661FXMTIU-IU
                                                                                   Date:    Thursday, June 16, 2005         Sheet   2   of   33
                   5                   4            3                  2                                                1
                                       5                                                                      4                                                                             3                                                             2                                                                  1




                                                                                                                       VCORE




                                                                                                                             +




                                                                                                                                             +




                                                                                                                                                         +
                                                                                                                                 SEC1            SEC2        SEC3

                                                                                                                             100U/2V/SPCAP/X             100U/2V/SPCAP/X
D                           VCORE                                                                                                          100U/2V/SPCAP/X                                                                                                                                                                                                     D




                                  BC663           BC664           BC665              BC666
                                10U/12/X/6.3V/X 10U/12/X/6.3V/X 10U/12/X/6.3V/X    10U/12/X/6.3V




                                                                                                                                      LGA775A
                                                                             HA[3..16]
                                                    7         HA[3..16]
                                                                                                      HA3                        L5                                                   D2        -ADS
                                                                                                                                      A03#                                    ADS#                          -ADS        7
                                                                                                      HA4                        P6                                                   C2        -BNR
                                                                                                                                      A04#                                    BNR#                          -BNR        7
                                                                                                      HA5                        M5                                                   D4        -HIT
                                                                                                                                      A05#                                     HIT#                         -HIT        7
                                                                                                      HA6                        L4                                                   H4
                                                                                                      HA7                             A06#                                    RSP#              -BPRI
                                                                                                                                 M4   A07#                                   BPRI#    G8                    -BPRI            7
                                                                                                      HA8                        R4                                                   B2        -DBSY
                                                                                                                                      A08#                                  DBSY#                           -DBSY       7
                                                                                                      HA9                        T5                                                   C1        -DRDY
                                                                                                                                      A09#                                  DRDY#                           -DRDY       7
                                                                                                      HA10                       U6                                                   E4        -HITM
                                                                                                                                      A10#                                   HITM#                          -HITM       7
                                                                                                      HA11                       T4                                                   AB2       -IERR
                                                                                                      HA12                            A11#                                   IERR#              -CPUINIT
                                                                                                                                 U5   A12#                                    INIT#   P3                                                       -CPUINIT       5,12
                                                                                                      HA13                       U4                                                   C3        -HLOCK
                                                                                                                                      A13#                                  LOCK#                            -HLOCK     7
                                                                                                      HA14                       V5                                                   E3        -HTRDY                           C1086
                                                                                                                                      A14#                                  TRDY#                          -HTRDY       7
                                                                                                      HA15                       V4                                                   AD3                                        33P/4/N/50V
                                                                                                      HA16                            A15#                                  BINIT#              -DEFER
                                                                                                                                 W5   A16#                                 DEFER#     G7                   -DEFER       7                                                                               Closed to
C                                                                                                                                N4                                                   F2        -EDRDY                                                                                                                                                         C
                                                                                                                                 P5
                                                                                                                                      RSVD                                 EDRDY#
                                                                                                                                                                                      AB3                                                                                                               Pin-H1
                                                                                                                  -HREQ0              RSVD                                 MCERR#                                                                                                             R1537
                                                                                            7        -HREQ0                      K4   REQ0#
                                                                                                                  -HREQ1         J5                                                   U2        CPU_TP1                                                                                     100/6/1                              GTLREF
                                                                                            7        -HREQ1                           REQ1#                                   AP0#                                                                                   VTT_OR
                                                                                                                  -HREQ2         M6                                                   U3        CPU_TP2
                                                                                            7        -HREQ2                           REQ2#                                   AP1#
                                                                                                                  -HREQ3         K6
                                                                                            7        -HREQ3                           REQ3#
                                                                                                                  -HREQ4         J6                                                   F3        -BREQ0                                                                                  BC667                 R1538        C1087
                                                                                            7        -HREQ4                           REQ4#                               BR0#                              -BREQ0      7
                                                                                                                  -HA_STB0       R6                                                   G3        TESTHI8                                                                                 0.01U/6/X/50V         169/6/1     1U/6/Y/10V
                                                                                            7      -HA_STB0                           ADSTB0#                          TESTHI08                             TESTHI8     5
                                                                                                                  -HPCREQ        G5                                                   G4        TESTHI9
                                                                             HA[17..31]                                               PCREQ#                           TESTHI09                             TESTHI9     5
                                                                                                                                                                                      H5        TESTHI10
                                                    7        HA[17..31]                                                                                                TESTHI10                             TESTHI10    5
                                                                                                      HA17                   AB6
                                                                                                      HA18                            A17#
                                                                                                                              W6      A18#                                    DP0#    J16       CPU_TP3
                                                                                                      HA19                                                                                                        C1088
                                                                                                                              Y6      A19#                                    DP1#    H15       CPU_TP4
                                                                                                      HA20                    Y4                                                      H16       CPU_TP5       220P/4/N/50V
                                                                                                      HA21                            A20#                                    DP2#
                                                                                                                             AA4      A21#                                    DP3#    J17       CPU_TP6
                                                                                                      HA22                   AD6      A22#
            SP-CAP X 4PCS                                                                             HA23
                                                                                                      HA24
                                                                                                                             AA5
                                                                                                                             AB5
                                                                                                                                      A23#                                 GTLREF     H1        GTLREF

                                                                                                      HA25                            A24#                                                      -CPURST                                                                                            R1539        62/6     -IERR
                                                                                                                             AC5      A25#                                 RESET#     G23                                                      -CPURST        7               VTT_OL
                                                                                                      HA26                   AB4
        VCORE                                                                                         HA27                            A26#                                                      -RS0
                                                                                                                             AF5      A27#                                    RS0#    B3                   -RS0         7
                                                                                                      HA28                   AF4                                                      F5        -RS1                             C1089                                                             R1540        62/6     -BREQ0
                                                                                                                                      A28#                                    RS1#                         -RS1         7                                                     VTT_OL
                                                                                                      HA29                   AG6                                                      A3        -RS2                             22P/4/N/50V
                                                                                                                                      A29#                                    RS2#                         -RS2         7
                                                                                                      HA30                   AG4
                                                                                                      HA31                            A30#                                                                                                                                                         R1541        62/6     -CPURST
                                                                                                                             AG5                                                                                                                                              VTT_OL
            +




                            +




                                           +




                                                             +




                EC98            EC99           EC100             EC101                                                                A31#
                                                                                                                             AH4      A32#
                                                                                                                             AH5      A33#
                                                                                                                             AJ5                                                                                                                                                                   R1542        62/6/X -EDRDY
                                                                                                                                      A34#                                                                                                                                    VTT_OL
                                                                                                                             AJ6      A35#
                                                                                                                             AC4                                                                                                                                                                   R1652        62/6/X
    100U/2V/SPCAP/X 100U/2V/SPCAP/X                        100U/2V/SPCAP/X                                                            RSVD
                                                                                                                             AE4      RSVD
B                                                                                                                 -HA_STB1                                                                                                                                                                                                                                     B
                                                                                            7      -HA_STB1                  AD5      ADSTB1#
                                       100U/2V/SPCAP/X
                                                                                                                                                                                                                                                                                                   R1543        62/6/X -HPCREQ
                                                                                                                                                                                                                                                                              VTT_OL
                                                                                                                                        LGA775

      VCORE




            BC668           BC669           BC670           BC671           BC672
          10U/12/X/6.3V/X 10U/12/X/6.3V/X 10U/12/X/6.3V/X 10U/12/X/6.3V/X 10U/12/X/6.3V/X




      VCORE




            BC673           BC674            BC675
          10U/12/X/6.3V   10U/12/X/6.3V    10U/12/X/6.3V




A                                                                                                                                                                                                                                                                                                                                                              A




                                                                                                                                                                                                                                                                                                              GIGABYTE
                                                                                                                                                                                                                                                                                Title
                                                                                                                                                                                                                                                                                                                        P4_LGA775-A
                                                                                                                                                                                                                                                                                Size        Document Number                                             Rev
                                                                                                                                                                                                                                                                                Custom                                8S661FXMTIU-IU                     1.0
                                                                                                                                                                                                                                                                                Date:       Thursday, June 16, 2005               Sheet   3   of   33
                                       5                                                                      4                                                                             3                                                             2                                                                  1
    5                                              4                                                    3                                              2                                          1




D                                                                                                                                                                                                                                  D




                                                                             LGA775B
                             HD[0..15]
        7   HD[0..15]                                                                                                                 HD[32..47]   7
                                                            HD0      B4                           G16       HD32
                                                            HD1           D00#             D32#             HD33
                                                                     C5   D01#             D33#   E15
                                                            HD2      A4                           E16       HD34
                                                            HD3           D02#             D34#             HD35
                                                                     C6   D03#             D35#   G18
                                                            HD4      A5                           G17       HD36
                                                            HD5           D04#             D36#             HD37
                                                                     B6   D05#             D37#   F17
                                                            HD6      B7                           F18       HD38
                                                            HD7           D06#             D38#             HD39
                                                                     A7   D07#             D39#   E18
                                                            HD8     A10                           E19       HD40
                                                            HD9           D08#             D40#             HD41
                                                                    A11   D09#             D41#   F20
C                                                           HD10    B10                           E21       HD42                                                                                                                   C
                                                            HD11          D10#             D42#             HD43
                                                                    C11   D11#             D43#   F21
                                                            HD12     D8                           G21       HD44
                                                            HD13          D12#             D44#             HD45
                                                                    B12   D13#             D45#   E22
                                                            HD14    C12                           D22       HD46
                                                            HD15          D14#             D46#             HD47
                                                                    D11   D15#             D47#   G22
                                                        -DBI0        A8                           D19              -DBI2
                               7           -DBI0                          DBI0#           DBI2#                                     -DBI2        7
                                                        -HD_STBN0    C8                           G20              -HD_STBN2
                               7      -HD_STBN0                           DSTBN0#      DSTBN2#                                      -HD_STBN2 7
                                                        -HD_STBP0    B9                           G19              -HD_STBP2
                               7      -HD_STBP0
                              HD[16..31]                                  DSTBP0        DSTBP2                                      -HD_STBP2 7
        7   HD[16..31]                                                                                                                HD[48..63]   7
                                                            HD16     G9                           D20       HD48
                                                            HD17          D16#             D48#             HD49
                                                                     F8   D17#             D49#   D17
                                                            HD18     F9                           A14       HD50
                                                            HD19          D18#             D50#             HD51
                                                                     E9   D19#             D51#   C15
                                                            HD20     D7                           C14       HD52
                                                            HD21          D20#             D52#             HD53
                                                                    E10   D21#             D53#   B15
                                                            HD22    D10                           C18       HD54
                                                            HD23          D22#             D54#             HD55
                                                                    F11   D23#             D55#   B16
                                                            HD24    F12                           A17       HD56
                                                            HD25          D24#             D56#             HD57
                                                                    D13   D25#             D57#   B18
                                                            HD26    E13                           C21       HD58
                                                            HD27          D26#             D58#             HD59
                                                                    G13   D27#             D59#   B21
                                                            HD28    F14                           B19       HD60
                                                            HD29          D28#             D60#             HD61
                                                                    G14   D29#             D61#   A19
                                                            HD30    F15                           A22       HD62
                                                            HD31          D30#             D62#             HD63
                                                                    G15   D31#             D63#   B22
                                                       -DBI1        G11                           C20          -DBI3
                         7            -DBI1                               DBI1#           DBI3#                                -DBI3     7
                                                       -HD_STBN1    G12                           A16          -HD_STBN3
                         7       -HD_STBN1                                DSTBN1#      DSTBN3#                                 -HD_STBN3 7
                                                       -HD_STBP1    E12                           C17          -HD_STBP3
                         7       -HD_STBP1                                DSTBP1        DSTBP3                                 -HD_STBP3 7

B                                                                                                                                                                                                                                  B
                                                                             LGA775




A                                                                                                                                                                                                                                  A




                                                                                                                                                                                      GIGABYTE
                                                                                                                                                           Title
                                                                                                                                                                                              P4_LGA775-C
                                                                                                                                                           Size     Document Number                                         Rev
                                                                                                                                                           Custom                                                            1.0
                                                                                                                                                                                              8S661FXMTIU-IU
                                                                                                                                                           Date:    Thursday, June 16, 2005           Sheet   4   of   33
    5                                              4                                                    3                                              2                                          1
                                 5                                                                                   4                                                                                                      3                                                                            2                                                                                                     1


                                                                                                                                                                                                                                                                                                                                                                   Place outside of                                CPU socket
                                                                                                                                                                                                                                                                                                                                                                                      R1545                  100/6/1       COMP2
                                                                                                                                                                                                                                                                                                                                                        VTT_OL
                                                                                                                                                                                                                                                                                                                                                                                      R1547                  100/6/1       COMP3
                                                                Note:                                                                                                                                                                                                                                                                                          C1091                  R1548                  60.4/6/1      COMP0
                                                                VCCA & VCOREPLL                                                                                                                                                                  R1544           110/6/1                                            TESTHI0                             0.1U/6/Y/25V                  R1549                  60.4/6/1      COMP1
                                                                                                                                                                                                                                VCC3
                                                                                                                                                         R1659                49.9/6/1/X                          GTLREF1
                                                                define doesn't same as                                             VTT_OR
                                                                                                                                                                                                                                                                             R1546                                   C1090
    VTT_GMCH                                                    old P4 design kit                                                                                                                                                                                            61.9/6/1                             0.1U/6/Y/25V
               L20                                                                                                                                                                             R1660            C1135                                                                                                                                                                 R1661                  60.4/6/1/X    COMP2
                                                                                  VCCA                                                                                                         100/6/1/X       1U/6/Y/10V/X                                                                                                                                                           R1662                  60.4/6/1/X    COMP3
          10UH/8/100mA/S

D                             C1092          BC676                            R1550                                                                                                                                                                                                    R1551                 249/6/1                                                                                                                                         D
                                                                                                                                                                                                                                                                                                                                  VCC3




                                                                                                                                                                                                                                                                                  3
                              1U/6/Y/10V     4.7U/8/Y/10V                     0/SHT/X                                                                                                                                                                                                                                                                                                 RN192
                                                                                                                                                                                                                                                                                              Q148                                                                                    470/8P4R
                                                                                  VSSA                                                                                                                                                                                            D                                                                                                                             FS_A
                                                                                                              Trace width doesn't                                                                                                                                                              2N7002/SOT23                                        VTT_GMCH                       7         8
                                                                                                                                                                                                                                                                                                                                                                                  5         6                   FS_C
                                                                                                              less than 12 Mil                                                                                                                                               G            S
                                                                                                                                                                                                                                                                                                                                                                                  3         4                   FS_B
                              C1093          BC677                                                                                                                                                                                                                                             SOT23                             TESTHI0                                          1         2




                                                                                                                                                                                                                                                                              2

                                                                                                                                                                                                                                                                                      1
               L21            1U/6/Y/10V     4.7U/8/Y/10V                                                                                                                                                                              6,7     GTL_DET
                                                                                  VCOREPLL                                                                                                                                                                                                                                                                                  R31               62/6
                                                                                                                                                                                                                                                                                                                                                                                                                                      -CPUINIT        3,12
          10UH/8/100mA/S                                                                                                                                                                                       LGA775C
                                                                As close as possible to                                                                                                                                                                                                                                                                                       R1552            62/6                TESTHI2_7
                                                                CPU socket                                                                                                      -SMI               P2                                           F26          TESTHI0                                                                                                          R1553            62/6/X              -THERMTRIP
                                                                                                                                               12                    -SMI                                  SMI#                    TESTHI00
                                                                                                                                                                                -A20M              K3                                           W3           TESTHI1
                                                                                                                                               12                 -A20M                                    A20M#                   TESTHI01
                                                                                                                                                                                -FERR              R3                                           P1           TESTHI11                                                                                                         R1670            62/6/X              -FERR
                                                                                                                                               12                -FERR                                     FERR#/PBE#              TESTHI11
                                                                                                                                                                                INTR               K1                                           W2           TESTHI12
                                                                                                                                               12                   INTR                                   LINT0                   TESTHI12
                                                                                                                                                                                NMI                L1                                           F25                                                                                                                           R1555            62/6/X              RSVD_G6
                                                                                                                                               12                     NMI                                  LINT1                   TESTHI02                                                                                                          VTT_OL
                                                                                                                                                                                -IGNNE             N2                                           G25
                                                                                                                                               12               -IGNNE                                     IGNNE#                  TESTHI03
                                                                                                                                                                                -STPCLK            M3                                           G27                                                                                                                           R1556            62/6                TESTHI12
                                                                                                                                               12              -STPCLK                                     STPCLK#                 TESTHI04
                                                                                                                                                                                                                                   TESTHI05     G26
                                                                                                                                                                                VCCA              A23                                           G24                                                                                                                           R1557            62/6                TESTHI1
                                                                                                                                                                                VSSA                       VCCA                    TESTHII06                 TESTHI2_7
                                                                                                                                                                                                  B23      VSSA                    TESTHI07     F24
                                                                                                                                                                                                  D23                                           AK6          -FORCEPR
                                                                                                                                                                                                           RSVD                   FORCEPR#                                            -FORCEPR               26
                                                                                                                                                                                VCOREPLL          C23                                           G6           RSVD_G6
                                                                                                                                                                                                           VCCIOPLL                   RSVD                                                                                                                                  RN193 7                            TESTHI11
                                                                                                                                                                                                                                                                                                                                                                                               8
      VTT_GMCH                                                                                                                                                                  VID0              AM2                                           L2           -CPUSLP                                                                                                              5            6               TESTHI10
                                                                                                                                                         VID[0..5]                                         VID0                       SLP#                                                      -CPUSLP                  12                                                                                                       TESTHI10       3
                                                                                                                                                                                VID1              AL5                                           AH2                                                                                                                               3            4               TESTHI9
                                                                                                                         28        VID[0..5]                                                               VID1                      RSVD                                                                                                                                                                                         TESTHI9        3
                       RN11      2 62/8P4R        INTR                                                                                                                          VID2              AM3                                           N1           CPUPWOK_CPU                                                                                                          1            2               TESTHI8
                                                                                                                                                                                                           VID2                   PWRGOOD                                                                                                                                                                                         TESTHI8        3
                          3      4                -IGNNE                                                                                                                        VID3              AL6                                           AL2          -PROCHOT                                                                                                       62/8P4R
                                                                                                                                                                                                           VID3                  PROCHOT#                                                         -PROCHOT               12,26
                          5      6                -SMI                                                                                                                          VID4              AK4                                           M2           -THERMTRIP
                                                                                                                                                                                                           VID4                 THERMTRIP#                                                      -THERMTRIP               12
                          7      8                NMI                                                                                                                           VID5              AL4
C                                                                                                                                                                                                          VID5                                              COMP0                                                                                                                                                                                           C
                          1      2                                                                                                                                                                AM5      RSVD                        COMP0    A13
                          3      4                -A20M                                                                                                                                                                                         T1           COMP1
                                                  -STPCLK                                                                                                                    CPU_CLK                                                   COMP1                 COMP2
                          5      6                                                                                            15      CPU_CLK                                                     F28      BCLK0                       COMP2    G2
                          7      8                -CPUSLP                                                                                                                   -CPU_CLK              G28                                           R1           COMP3
                                                                                                                              15     -CPU_CLK                                                              BCLK1                       COMP3                                                                                                                                      VTT_OL
                     RN2           62/8P4R
                                                                                                                                                                                                  AE8                                           N5                                                                                             VTT_OL                                                                      VTT_OL
                                                                                                                                                                                                           SKTOCC#                    RSVD
                                                                                                                                                                                                                                      RSVD      AE6
                                                                21      TMPIN2                                                              



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