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                                                                         B
                                                                         Appendix



Pin Assignments

B.1 CRT (VGA) Connector
The pin assignment of the VGA connector is as follows:

 No   PIN ASSIGEMENT(by: sort)                DESCRIPTION
                                              Red this DAC analog output drives the CRT
  1   RED Video_5 :O (analog)
                                              interface.
      GREEN Video_5 :O                        Green this DAC analog output drives the CRT
  2   (analog)                                interface.
      BLUE Video_5 :O                         Blue this DAC analog output drives the CRT
  3
      (analog)                                interface.
  4   Monitor ID Bit 2 :                      Option
  5   GROUND :                                Ground
  6   RED Return (ground) :                   Ground
  7   GREEN Return (ground) :                 Ground
  8   BLUE Return (ground) :                  Ground
  9   KEY (no connector) :                    VCC
 10   SYNC Return (ground) :                  Ground
 11   MONITOR ID Bit 0_5 :                    Monitor Sense Indicator
 12   MONITOR ID Bit 1_5 :I                   DDC monitor data
                                              CRT Horizontal Sync this output is The
 13   HORIZONTAL SYNC_5 :O (t/s)
                                              Horizontal sync pulse for the CRT Monitor.
                                              CRT Vertical Sync this output is the Vertical
 14   VERTICAL SYNC_5 :O (t/s)
                                              sync pulse for the CRT Monitor.
 15   MONITOR ID Bit 3_5 :I/O                 DDC monitor clock

Absolute Maximum Conditions
The following parameters are maximum ratings for VGA. Permanent device damage may
occur if these rating are exceeded. Extended exposure to these ratings may also cause device
failure.

      PARAMETER                  MIN                 MAX                    UNIT
      I/O VOLTAGE                -0.5               +6.00V                   V
                                                 -12mA(source)
   OUTPUT CURRENT                                                            mA
                                                  +24mA(sink)




FIC A550 Service Manual                                                                  B-1
                                   Pin Assignments

B.2 Serial Port Connector
The pin assignment of the serial (COM1) port connector is as follows:

      No      PIN ASSIGMENT (by: sort)                           DESCRIPTION
      1       DCDA#_T:I                   Active low Data Carrier Detect inputs for the serial port.
      2       SINA_T:I                    Receiver serial data input for port 1.
      3       SOUTA_12:O                  Transmit serial data output for port 1.
      4       DTRA#_6:O                   Active low Data Terminal Ready outputs for the serial port.
      5       GND                         Ground
      6       DSRA#_T:I                   Active low Data Set Ready inputs for the serial port.
      7       RTSA#_6:O                   Active low Request to Send Outputs for the serial port.
      8       CTSA#_T:I                   Active low Clear to Send inputs for the serial port.
      9       RI#_T:I                     Active low Ring Indicator inputs for the serial port.


B.3 Parallel Port Connector
The pin assignment of the parallel/printer (LPT1) port connector is as follows:

 No             PIN ASSIGMENT(by: sort)                                 Description
 1         STB#/DS0#_D14/_P14/_D12:O            An active low pulse on this output is used to strobe
                                                the printer data into the printer.
                                                The STROBE output is the complement of Bit 0 of the
                                                printer control register.
                                                Refer to parallel port description for use of this pin in
                                                ECP and EPP mode.
                                                Active low outputs select driver 0
  2        PD0/INDEX3#_P14/_S:IO/I              Port data 0
                                                This active low Schmidt trigger input senses from the
                                                disk drive that the head is positioned over the
                                                beginning of a track as marked by an index hole.
  3        PD1/TRK0#_P14/_S:IO/I                Port data 1
                                                This active low Schmidt trigger input senses from the
                                                disk drive that the head is positioned over the
                                                outermost track.
  4        PD2/WRTPRT#_P14/_S:IO/I              Port data 2
                                                This active low Schmidt trigger input senses from the
                                                disk drive that a disk is write protected.
                                                Any write command is ignored.
  5        PD3/RDATA#_P14/_S:IO/I               Port data 3
                                                Raw serial bit stream from the disk drive, low active.
                                                Each falling edge represents a flux transition of the
                                                encoded data.
  6        PD4/DSKCHG_P14/_S:IO/I               Port data 4
                                                This input senses that the driver door is open or that
                                                the diskette has possibly been changed since the last
                                                drive selection.
  7        PD5_P14:IO                           Port data 5
  8        PD6/MTR0#_P14/_D12:IO/O              Port data 6
                                                This active low outputs select motor drives 0.
  9        PD7_P14:IO                           Port data 7
  10       ACK#/DS1#_T_D12:I/O                  A low active output from the printer indicating that it
                                                has received the data and is ready to accept new
                                                data.
                                                Bit 6 of the printer status register reads the ACK#
                                                Input.
                                                Refer to parallel port description for use of this pin in
                                                ECP and EPP mode.
  11       BUSY/MRT1#_T/_D12:_I/O               This is a status output from the printer, a high
                                                indicating that the printer is not ready to receive new
                                                data.



B-2                                                                       FIC A550 Service Manual
                             Pin Assignments

                                        Bit 7 of the Printer status register is the complement
                                        Of the BUSY input. Refer to parallel port description
                                        for use of this pin in ECP and EPP mode.
                                        This active low outputs select motor Drives 1.
 12   PE/WDATA#_T/_D12:I/O              Another status output from the printer, a high
                                        indicating that printer is out of paper.
                                        Bit 5 of the printer status register reads the PE input.
                                        Refer to parallel port description for use of this pin in
                                        ECP and EPP mode.
                                        This active low high current driver provide the
                                        encoded data to the disk drive.
                                        Each falling edge cause a flux transfer on the media.
 13   SLCT/WGATE#_T/_D12:I/O            This high active output from the printer indicates that it
                                        has power on.
                                        Bit 4 of the printer status register read the SLCT input.
                                        Refer to parallel port description for use of this pin in
                                        ECP and EPP mode.
                                        This active low high current driver allows current to
                                        flow through the write head.
                                        It become active just prior to writing to the diskette.
 14   AFD#/DSB#_D14,_P14/_D12:O,O/O     This output goes low to cause the printer to
                                        automatically feed one line after each line is printed.
                                        The AFD# output is the complement of bit 1 of the
                                        printer control register.
                                        Refer to parallel pot description for use of this pin in
                                        ECP and EPP mode.
 15   ERR#/HDSEL_T/D12:I/O              A low on this input from the printer indicates that there
                                        is a error condition at the printer.
                                        Bit 3 of the printer status register reads the ERR#
                                        input.
                                        Refer to parallel port description for use of this pin in
                                        ECP and EPP mode.
                                        This high current output selects the floppy disk side
                                        for reading or writing.
                                        A logic "1" on this pin means side 0 will be accessed
                                        while a logic "0" means side 1 will be acessed.
 16   INIT#/DIR#_D14,_P14/D12:O,O/O     This output is bit 2 of the printer control register. This
                                        is used to initiate the printer when low.
                                        Refer to parallel port description for use of this pin in
                                        ECP and EPP mode.
                                        This high current low active output determines the
                                        direction of the head movement.
                                        A logic "1" on this pin means outward motion, while a
                                        logic "0" means inward motion.
 17   SLIN#/STEP#_D14,_P14/_D12:O,O/O   This active low output selects the printer.
                                        This is the complement of bit 3 of the printer control
                                        register.
                                        Refer to parallel port description for use of this pin in
                                        ECP and EPP mode.
                                        This active low high current driver issues s low pulse
                                        for each track to track movement of the head.
 18   GND:                              Ground
 19   GND:                              Ground
 20   GND:                              Ground
 21   GND:                              Ground
 22   GND:                              Ground
 23   GND:                              Ground
 24   GND:                              Ground
 25   GND:                              Ground




FIC A550 Service Manual                                                                       B-3
                              Pin Assignments

B.4 PS/2 Mouse / Ext. Keyboard MiniDIN Connector
                                  -
Following is the pin assignment of the PS/2 connector:

  No            Signal                          Description                     Type
  1          MOUSE_CLK        External clock for mouse or keyboard               I/O
  2           EKB_CLK         External clock for mouse or keyboard               I/O
  3             +5vs          5v power supply                                     O
  4              Gnd          Ground                                               I
  5           EKB_DATA        External data for mouse or keyboard                I/O
  6          MOUSE_DATA       External data for mouse or keyboard                I/O


B.5 USB Connector
The pin assignment of the USB port connector is as follows:

         No               Signal           Description                         Type
1, 5, 9, 10, 11, 12       GND            Ground                                 O
         2               USBP0+          USB port0 bus signal                   O
         3               USBP0-          USB port0 bus signal                   O
         4                +5VS           USB port0 power
         6               USBP1+          USB port1 bus signal
         7               USBP1-          USB port1 bus signal
         8                +5VS           USB port1 power



B.6 CD-ROM IDE Connector
The following is the pin assignment for the CD-ROM IDE connector:

       NO.                Signal       Description                             Type
        5             CDROMRESET#   Reset secondary disk                         O
       33                 RSDA0     Secondary disk address 0                     O
       31                 RSDA1     Secondary disk address 1                     O
       34                 RSDA2     Secondary disk address 2                     O
       21                 RSDD0     Secondary disk data 0                       I/O
       19                 RSDD1     Secondary disk data 1                       I/O
       17                 RSDD2     Secondary disk data 2                       I/O
       15                 RSDD3     Secondary disk data 3                       I/O
       13                 RSDD4     Secondary disk data 4                       I/O
       11                 RSDD5     Secondary disk data 5                       I/O
        9                 RSDD6     Secondary disk data 6                       I/O
        7                 RSDD7     Secondary disk data 7                       I/O
        6                 RSDD8     Secondary disk data 8                       I/O
        8                 RSDD9     Secondary disk data 9                       I/O
       10                RSDD10     Secondary disk data 10                      I/O
       12                RSDD11     Secondary disk data 11                      I/O
       14                RSDD12     Secondary disk data 12                      I/O
       16                RSDD13     Secondary disk data 13                      I/O
       18                RSDD14     Secondary disk data 14                      I/O
       20                RSDD15     Secondary disk data 15                      I/O
       35                RSDCS1#    Secondary disk chip select for 100 range     O
       36                RSDCS3#    Secondary disk chip select for 300 range     O
       28               RSDDACK#    Secondary DMA acknowledge                    O
       22               RSDDREQ     Secondary DMA request                         I




B-4                                                                  FIC A550 Service Manual
                                Pin Assignments

       24              RSDIOR#        Secondary disk IO read                       O
       25              RSDIOW#        Secondary disk IO write                      O
       27              RSIORDY        Secondary disk IO channel ready               I
       29               IRQ15         Secondary disk interrupt                      I
       50                 NC                                                       NC
       49                 NC                                                       NC
       37             CDROMLED#       CDROM access indicator                       O
        2                CD_R         CDROM sound right signal                     O
        4                GND          Ground                                        I
        1                CD_L         CDROM sound left signal                      O
        3              CD_RGND        Left Ground                                   I
 39,41,38,40,42          +5Vs         +5V power supply                              I
23,43,44,45,46,48         Gnd         Ground                                       O
       47                CSEL         SELECT MASTER OR SLAVE                        I


B.7 DC-IN Jack Pin Assignment
The pin assignment of the DC-IN connector is as follows:

     No      Signal                             Description                        Type
     1      ADAPV+         Adapter input voltage                                    I
     2        Gnd          Ground                                                   O


B.8 LCD Connector Pin Assignment
The pin assignment of the LCD connector is as follows:

    NO.                                  Signal        Description                  Type
                                                     Flat panel backlight signal
22                                      INVENA                                          O
                                                     control the LCD backlight.
2                                       LCDID0       LCD type bit0                      I
4                                       LCDID1       LCD type bit1                      I
6                                       LCDID2       LCD type bit2                      I
8                                       LCDID3       LCD type bit3
20                                   BRIGHTNESS LCD brightness adjust voltage           O
23                                    TXOUTU0-                                          O
21                                    TXOUTU0+                                          O
17                                    TXOUTU1-                                          O
15                                    TXOUTU1+                                          O
11                                    TXOUTU2-                                          O
9                                     TXOUTU2+                                          O
5                                       TXCLK-                                          O
3                                       TXCLK+                                          O
16                                     MAIL LED
10                                    LED GREEN
12                                    LED AMBER
14                                     LED CHG
46,48,50                                  +3V
24,26,28,30,32                            +5V
1,7,13,19,25,31,37,43,49,34,36,38,        GND
40,42,44
18                                        NC




FIC A550 Service Manual                                                                     B-5
                                Pin Assignments


B.9 FDD Connector
The pin assignment for the FDD connector is as follows:

  NO.        Signal   Description                                                              Type
                      Read disk data. Raw serial bit stream form the disk drive, low active.
   24       RDATA#                                                                               I
                      Each falling edge represents a flux transition of the encoded data.
                      Write gate. This active low high current driver allows current to flow
   18       WGATE#    through the write head .                                                  O
                      It becomes active just prior to writing to the diskette.
                      Write data. This active low high current driver provides the encoded
   16       WDATA#    data to the disk drive.                                                   O
                      Each falling edge causes a flux transition on the media.
                      Head select. The high current select the floppy disk side for reading or
   26       HDSEL#    writing. A logic "1" on the pin means side 0 will be accessed, while a    O
                      logic "0" means side 1 will be accessed.
                      Direction control. This high current low active output determines the
   12        DIR#     direction of the head movement. A logic "1" on this pin means outward O
                      motion , while a logic "0" means inward motion.
                      Step pulse. The active low high current driver issues a low pules for
   14        STEP#                                                                              O
                      each track-to-track movement of the head.
                      Disk change. This input senses that the drive door is open or that the
                      diskette has possibly been changed since the last drive selection.
      6     DSKCHG#   This input is inverted and read via bit 7 of I/O address 3F7H. The         I
                      DSKCHG# bit also depends upon the state of the Force Disk Change
                      bits in the Force FDD Status Change configuration register.
    4         DS0#    Drive select 0. Active low outputs select drives 0.                       O
   10        MOTR0    Motor on. These active low output motor on.                               O
   13        3MODE    3 Mode FDD select.                                                        O
                      Write protected. This active low Schmitt trigger input senses from the
   22       WRTPRT#                                                                              I
                      disk drive that a disk is write protected.
                      Track 00. This active low Schmitt trigger input senses from the disk
   20        TRK0#                                                                               I
                      drive that the head is positioned over the outermost track.
                      This active low Schmitt Trigger input senses from the disk drive that
      2     INDEX#    head is positioned over the beginning of a track , as marked by an         I
                      index hole.
  7,8,9       NC
25,23,21,             Ground
              Gnd                                                                                I
19,17,15
 11,5,3,1    +5Vs     +5V power supply                                                         O


B.10 HDD Pin Assignment
The pin assignment of the internal HDD is as follows:

      NO.         Signal            Description                                           Type
       1        HDDRESET#         Reset primary disk                                        O
      35          RPDA0           Primary disk address 0                                    O
      33          RPDA1           Primary disk address 1                                    O
      36          RPDA2           Primary disk address 2                                    O
      17          RPDD0           Primary disk data 0                                      I/O
      15          RPDD1           Primary disk data 1                                      I/O
      13          RPDD2           Primary disk data 2                                      I/O
      11          RPDD3           Primary disk data 3                                      I/O
       9          RPDD4           Primary disk data 4                                      I/O
       7          RPDD5           Primary disk data 5                                      I/O
       5          RPDD6           Primary disk data 6                                      I/O
       3          RPDD7           Primary disk data 7                                      I/O



B-6                                                                     FIC A550 Service Manual
                                 Pin Assignments

      4           RPDD8             Primary disk data 8                               I/O
      6           RPDD9             Primary disk data 9                               I/O
      8          RPDD10             Primary disk data 10                              I/O
      10         RPDD11             Primary disk data 11                              I/O
      12         RPDD12             Primary disk data 12                              I/O
      14         RPDD13             Primary disk data 13                              I/O
      16         RPDD14             Primary disk data 14                              I/O
      18         RPDD15             Primary disk data 15                              I/O
      37         RPDCS1#            Primary disk chip select for 100 range             O
      38         RPDCS3#            Primary disk chip select for 300 range             O
      29        RPDDACK#            Primary DMA acknowledge                            O
      21        RPDDREQ             Primary DMA request                                 I
      25         RPDIOR#            Primary disk IO read                               O
      23         RPDIOW#            Primary disk IO write                              O
      27         RPIORDY            Primary disk IO channel ready                       I
      31          IRQ14             Primary disk interrupt                              I
      39        HDDLED#             HDD access indicator                               O
2,19,22,24,26                       Ground
                     Gnd                                                               I
,28,3040,43
    41,42            +5Vs           +5v power supply                                  O


B.11 Internal Keyboard FPC Connector
The pin assignment of the internal keyboard connector is as follows:

   No       Signal                         Description                         Type
  1,25       X15      Keyboard matrix column 15                                  I
  2,26       X14      Keyboard matrix column 14                                  I
  3,27       X13      Keyboard matrix column 13                                  I
  4,28       X12      Keyboard matrix column 12                                  I
  5,29       X11      Keyboard matrix column 11                                  I
  6,30       X10      Keyboard matrix column 10                                  I
  7,31        X9      Keyboard matrix column 9                                   I
  8,32        X8      Keyboard matrix column 8                                   I
  9,33        X7      Keyboard matrix column 7                                   I
 10,34        X6      Keyboard matrix column 6                                   I
 11,35        X5      Keyboard matrix column 5                                   I
 12,36       XY7      Keyboard matrix row 7                                     O
 13,37       XY6      Keyboard matrix row 6                                     O
 14,38       XY5      Keyboard matrix row 5                                     O
 15,39       XY4      Keyboard matrix row 4                                     O
 16,40        X4      Keyboard matrix column 4                                   I
 17,41        X3      Keyboard matrix column 3                                   I
 18,42       XY3      Keyboard matrix row 3                                     O
 19,43       XY2      Keyboard matrix row 2                                     O
 20,44       XY1      Keyboard matrix row 1                                     O
 21,45       XY0      Keyboard matrix row 0                                     O
 22,46        X2      Keyboard matrix column 2                                   I
 23,47        X1      Keyboard matrix column 1                                   I
 24,48        X0      Keyboard matrix column 0                                   I


B.12 Battery Connector
The pin assignment for the battery connector is as follows:

   No        Signal          Description                                     Type
   1          Gnd          Ground                                               -
   2        B_PMU5V                                                             I
   3          BAT+         Battery output/input voltage                       I/O



FIC A550 Service Manual                                                                     B-7
                               Pin Assignments

      4       CLK        SMBus clock signal                                   I/O
      5       DTA        SMBus data signal                                    I/O
      6       TH1        THERMAL                                               O
      7       BIN1                                                             O
      8       GND        GROUND                                                 -



B.13 Audio Jack
The audio jack comprises of the headphone jack, line-out jack, and microphone jack:

SPDIF & Headphone Jack
The pin assignment of the headphone jack is as follows:

  No         Signal     Description                                           Type
  4       GND         Ground                                                    I
  2       HP_L        Headphone left sound                                     O
  3       HP_R        Headphone right sound                                    O
  5       SPDIFDET    SPDIF insert detect                                       I
  1       HPDET       Headphone insert detect                                   I
  8       SPDIF PWR   SPDIF power                                              O
  7       SPDIF       SPDIF signal                                             O
  9       GND         Ground                                                    I


Line-In Jack
The pin assignment of the line-in jack is as follows:

  No        Signal      Description                                           Type
  1          GND       Ground                                                   I
  2        LINEINL     Line in left sound                                       I
  3        LINEINR     Line in right sound                                      I
  4          GND       Ground                                                   I
  5          GND       Ground                                                   I


Microphone Jack
The pin assignment of the microphone jack is as follows:

  No         Signal     Description                                           Type
  1       GND         Ground                                                    I
  2       MICIN       External Microphone input signal                          I
  3       GND         Ground                                                    I
  4       EXTMICDET   EXTERNAL MIC detect                                       I
  5       GND         Ground                                                    I


B.14 Internal Microphone Connector
The pin assignment of the internal microphone is as follows:

  No        Signal                           Description                             Type
  1         MICIN                  External Microphone input signal
  2          GND                               Ground




B-8                                                                   FIC A550 Service Manual



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