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A B C D E
UL20A SCHEMATIC Revision 2.0
1 1
PAGE Content PAGE Content
SYSTEM PAGE REF.
3 CPU-PENRYN ULV FSB (1)
4 CPU-PENRYN ULV POWER (2)
5 CPU-CAPACITORS
7 DIM-DDR3 SO-DIMM CHANNEL A
8 DIM-DDR3 SO-DIMM CHANNEL B
9 DIM-DDR3 VREF & TERMINATION
10 NB_-GS45-HOST (1) POWER PAGE REF.
11 NB_-GS45-DMI (2)
2 12 NB_-GS45-DISPLAY (3) 80_POWER_VCORE 2
13 NB_-GS45-DDR2 BUS (4) 81_POWER_SYSTEM
14 NB_-GS45-POWER (5) 82_POWER_I/O_+1.05VO
15 NB_-GS45-POWER (6) 83_POWER_I/O_DDR & VTT
16 NB_-GS45-GND (7) 84_POWER_I/O_ +1.8V
17 NB_-GS45-STRAPPING (8) 88_POWER_CHARGER
20 SB_ICH9M-HDA, IDE, LPC (1) 90_POWER_DETECT
21 SB_ICH9M-PCI,PCIE,DMI,USB(2) 91_POWER_LOAD SWITCH
22 SB_ICH9M-GPIO, PMGT (3) 92_POWER_PROTECT
23 SB_ICH9M-POWER_GND (4) 93_POWER_SIGNAL
24 SB_ICH9M-SPI ROM & HDCP (5) 94_POWER_FLOWCHART
29 CLK-RTM875T-336-GRT 95_POWER_LED_VCC BOOST
3
30 KBC-ITE8512 3
31 ROM-FLASH ROM,TOUCH PAD,KB
36 AUD-ALC 269
37 AUD-MICROPHONE
38 AUD-HP&SPK CONN
44 BUG-DEBUG PORT
46 CRT-LVDS CONN
49 VID CONTROLLER
50 FAN-THERMAL SENSOR, FAN CONN
51 XDD-SATA HDD CONN
52 USB-USB 2.0 CONN*2
56 LED- PWR,LED,FPC CONN
4
57 DSG-DISCHARGE CIRCUIT 4
60 DC_-DC, BATT CONN
65 ME_-SCREW HOLE, SMT NUT
67 CMO-CMOS CAMERA
68 Board to Board CONN
96 History
97 Power On Sequence
5 5
Title : PAGE REF.
ASUSTeK COMPUTER INC Engineer: Jerry Yu
Size Project Name Rev
Custom UL20A 2.0
Date: W ednesday, July 29, 2009 Sheet 1 of 97
A B C D E
5 4 3 2 1
Penryn SFF CLOCK GENERATOR POWER
D
BLOCK ULV
(SU3300 TDP 5.5W)
RTM875T-336-VB
FAN & THERMAL
VCORE
D
(Dual Core TDP 10W) SENSOR
DIAGRAM 956 uFCBGA
SYSTEM
FSB
800MHz I/O_1.5VS & 1.05VS
DDR2 SDRAM 800MHz
I/O_DDR & VTT
LVDS GS45 Express
I/O_ +1.8VS
STANDARD STANDARD
1363 uFCBGA DDR2 DIMM DDR2 DIMM
CRT CHARGER
DMI
100MHz
C C
ALCOR
SATA AU6433D53 CARD
2.5" HDD
USB READER
ICH9M SFF
INT MIC 569 uFCBGA PCI-E 10/100
LAN controller RJ45
ALC269 Azalia Atheros
EXT MIC AR8132
Audio Codec
Line Out
B
Minicard B
USB 2.0
INT SPK WLAN
33MHz
LPC
IO Board
USB2.0 * 1
EMBEDDED
CONTROLLER
IT8502 BLUETOOTH
INTERNAL
BIOS ROM CAMERA
A KB & TP A
USB2.0 * 2 Title : BLOCK DIAGRAM
ASUSTeK COMPUTER INC Engineer: Jerry Yu
Size Project Name Rev
Custom UL20A 2.0
Date: Wednesday, July 29, 2009 Sheet 2 of 97
5 4 3 2 1
5 4 3 2 1
H_D#[63:0]
10 H_D#[63:0]
H_A#[35:3]
10 H_A#[35:3]
H_REQ#[4:0]
10 H_REQ#[4:0]
T0306 Reserved for the
S3 reboot issue
T0307
1
H_CPURST#
U0301A U0301B
1
D D
H_A#3 P2 M4 H_D#0 F40 AP44 H_D#32
A[3]# ADS# H_ADS# 10 D[0]# D[32]#
H_A#4 V4 J5 H_D#1 G43 AR43 H_D#33
A[4]# BNR# H_BNR# 10 D[1]# D[33]#
1
H_A#5 W1 L5 H_D#2 E43 AH40 H_D#34
A[5]# BPRI# H_BPRI# 10 D[2]# D[34]#
H_A#6 T4 @ C0303 H_D#3 J43 AF40 H_D#35
H_A#7 A[6]# H_D#4 D[3]# D[35]# H_D#36
AA1 N5 H_DEFER# 10 10PF/50V H40 AJ43
2
H_A#8 A[7]# DEFER# H_D#5 D[4]# D[36]# H_D#37
AB4 A[8]# DRDY# F38 H_DRDY# 10 H44 D[5]# D[37]# AG41
H_A#9 T2 J1 H_D#6 G39 AF44 H_D#38
A[9]# DBSY# H_DBSY# 10 D[6]# D[38]#
H_A#10 AC5 H_D#7 E41 AH44 H_D#39
H_A#11 A[10]# +VCCP H_D#8 D[7]# D[39]# H_D#40
AD2 A[11]# BR0# M2 H_BR0# 10 L41 D[8]# D[40]# AM44
H_A#12 AD4 H_D#9 K44 AN43 H_D#41
H_A#13 A[12]# H_IERR# RN0302A H_D#10 D[9]# D[41]# H_D#42
AA5 A[13]# IERR# B40 1 56Ohm 2 N41 D[10]# D[42]# AM40
H_A#14 AE5 D8 H_D#11 T40 AK40 H_D#43
A[14]# INIT# H_INIT# 20 D[11]# D[43]#
H_A#15 AB2 H_D#12 M40 AG43 H_D#44
H_A#16 A[15]# H_D#13 D[12]# D[44]# H_D#45
AC1 A[16]# LOCK# N1 H_LOCK# 10 G41 D[13]# D[45]# AP40
Y4 H_D#14 M44 AN41 H_D#46
10 H_ADSTB#0 ADSTB[0]# D[14]# D[46]#
G5 H_D#15 L43 AL41 H_D#47
RESET# H_CPURST# 10 D[15]# D[47]#
H_REQ#0 R1 K2 K40 AK44
REQ[0]# RS[0]# H_RS#0 10 10 H_DSTBN#0 DSTBN[0]# DSTBN[2]# H_DSTBN#2 10
H_REQ#1 R5 H4 J41 AL43
REQ[1]# RS[1]# H_RS#1 10 10 H_DSTBP#0 DSTBP[0]# DSTBP[2]# H_DSTBP#2 10
H_REQ#2 U1 K4 P40 AJ41
REQ[2]# RS[2]# H_RS#2 10 10 H_DINV#0 DINV[0]# DINV[2]# H_DINV#2 10
H_REQ#3 P4 L1
REQ[3]# TRDY# H_TRDY# 10
H_REQ#4 W5 H_D#16 P44 AV38 H_D#48
REQ[4]# H_D#17 D[16]# D[48]# H_D#49
HIT# H2 H_HIT# 10 V40 D[17]# D[49]# AT44
H_A#17 AN1 F2 H_D#18 V44 AV40 H_D#50
A[17]# HITM# H_HITM# 10 D[18]# D[50]#
H_A#18 AK4 H_D#19 AB44 AU41 H_D#51
H_A#19 A[18]# XDP_BPM#0 T0314 H_D#20 D[19]# D[51]# H_D#52
AG1 A[19]# BPM[0]# AY8 1 R41 D[20]# D[52]# AW 41
H_A#20 AT4 BA7 XDP_BPM#1 1 T0312 H_D#21 W 41 AR41 H_D#53
H_A#21 A[20]# BPM[1]# XDP_BPM#2 T0315 H_D#22 D[21]# D[53]# H_D#54
AK2 A[21]# BPM[2]# BA5 1 N43 D[22]# D[54]# BA37
H_A#22 AT2 AY2 XDP_BPM#3 1 T0316 H_D#23 U41 BB38 H_D#55
H_A#23 A[22]# BPM[3]# XDP_BPM#4 T0313 H_D#24 D[23]# D[55]# H_D#56
AH2 A[23]# PRDY# AV10 1 AA41 D[24]# D[56]# AY36
C H_A#24 AF4 AV2 XDP_BPM#5 H_D#25 AB40 AT40 H_D#57 C
H_A#25 A[24]# PREQ# XDP_TCK H_D#26 D[25]# D[57]# H_D#58
AJ5 A[25]# TCK AV4 AD40 D[26]# D[58]# BC35
H_A#26 AH4 AW 7 XDP_TDI +VCCP H_D#27 AC41 BC39 H_D#59
H_A#27 A[26]# TDI XDP_TDO H_D#28 D[27]# D[59]# H_D#60
AM4 A[27]# TDO AU1 AA43 D[28]# D[60]# BA41
H_A#28 AP4 AW 5 XDP_TMS H_D#29 Y40 BB40 H_D#61
A[28]# TMS D[29]# D[61]#
2
H_A#29 AR5 AV8 XDP_TRST# H_D#30 Y44 BA35 H_D#62
H_A#30 A[29]# TRST# XDP_DBR# R0302 H_D#31 D[30]# D[62]# H_D#63
AJ1 A[30]# DBR# J7 T44 D[31]# D[63]# AU43
H_A#31 AL1 1KOhm U43 AY40 Comp 0,2: Zo=27.4 Ohm, trace length < 0.5"
A[31]# 10 H_DSTBN#1 DSTBN[1]# DSTBN[3]# H_DSTBN#3 10
H_A#32 AM2 1% W 43 AY38
A[32]# 10 H_DSTBP#1 DSTBP[1]# DSTBP[3]# H_DSTBP#3 10 Comp 1,3: Z0=55 Ohm, trace length < 0.5"
H_A#33 AU5 R43 BC37
10 H_DINV#1 H_DINV#3 10
1
H_A#34 A[33]# DINV[1]# DINV[3]#
AP2 A[34]#
H_A#35 AR1 D38 H_PROCHOT_S# GTL_REF AW 43 AE43 H_COMP0 R0306 1 2 27.4Ohm 1%
A[35]# PROCHOT# GTLREF COMP[0] H_COMP1 R0307 54.9Ohm 1%
10 H_ADSTB#1 AN5 ADSTB[1]# THRMDA BB34 CPU_THRM_DXP 50 E37 TEST1 COMP[1] AD44 1 2
2
T0308 1 BD34 D40 AE1 H_COMP2 R0308 1 2 27.4Ohm 1%
THRMDC CPU_THRM_DXN 50 TEST2 COMP[2]
1
C7 C0301 R0303 C43 AF2 H_COMP3 R0309 1 2 54.9Ohm 1%
20 H_A20M# A20M# TEST3 COMP[3]
D4 B10 2KOhm AE41 1 1
20 H_FERR# FERR# THERMTRIP# H_THRMTRIP# 5,11,20 0.1UF/16V TEST4
F10 1% AY10 G7 T0320 T0310
20 H_IGNNE# H_DPRSTP# 11,20,80
2
T0309 IGNNE# T0301 @ TEST5 DPRSTP#
1 AC43 B8 H_DPSLP# 20
1
TEST6 DPSLP#
20 H_STPCLK# F8 STPCLK# DPW R# C41 H_DPWR# 10
20 H_INTR C9 29 CPU_BSEL0 A37 E7 H_PWRGD 20
1
LINT0 BSEL[0] PW RGOOD
20 H_NMI C5 LINT1 BCLK[0] A35 CLK_CPU_BCLK 29 29 CPU_BSEL1 C37 BSEL[1] SLP# D10 H_CPUSLP# 10
20,49 H_SMI# E5 SMI# BCLK[1] C35 CLK_CPU_BCLK# 29 29 CPU_BSEL2 B38 BSEL[2] PSI# BD10 1
Zo=55 Ohm, 0.5" max T0311
1
V2 RSVD01 Close to CPU for GTL_REF SU9400/SU9300
Y2 RSVD02
AG5 RSVD03 T0302
AL5 RSVD04
J9 RSVD05
F4 RSVD06
H8 +VCCP
B RSVD07 J0301 B
31 SIDE1 SIDE4 34
1 1 2 2 CLK_ITP_BCLK 29
29 CLK_ITP_BCLK# 3 3 4 4 SMB_DAT_S 7,8,22,29
SU9400/SU9300 7,8,22,29 SMB_CLK_S 5 5 6 6
7 8 ITP_CPURST# 1KOhm 1 @ 2 R0313 H_CPURST#
7 8
9 9 10 10
+VCCP XDP_TCK 11 12 XDP_TMS
11 12 XDP_TDI
13 13 14 14
Default Strapping When Not Used BCLK FSB BSEL2 BSEL1 BSEL0 R0310 1 @ 2 56Ohm XDP_TDO
XDP_BPM#0
15 15 16 16
XDP_BPM#1
17 17 18 18
166 667 0 1 1 XDP_BPM#2 19 20 XDP_BPM#3
+VCCP 19 20
+VCCP XDP_BPM#4 21 22 XDP_BPM#5
21 22
200 800 0 1 0 23 23 24 24
H_PWRGD R0311 1 @ 2 1KOhm XDP_PWRGD 25 26 XDP_TRST#
56Ohm R0301 25 26
XDP_BPM#5 1 2 266 1067 0 0 0 27 28
XDP_TDI RN0301D 27 28
7 56Ohm 8 29 29 30 30
XDP_TDO R0312 1 2 54.9Ohm 1% @
4
32 SIDE2 SIDE3 33
XDP_TMS 5 RN0301C
56Ohm 6
RN0302B FPC_CON_30P
XDP_DBR# R0314 1 2 1KOhm 1% @ @
+3VS 56Ohm
XDP_TCK 3 56Ohm 4 RN0301B GND GND
XDP_TRST# 1 56Ohm 2 RN0301A
3
3/25 SWAP @
GND H_PROCHOT_S# 1 2 PWRLIMIT_CPU# 30
RB751V-40 D0301
6
3
A A
Q0301A Q0301B
2 THRO_CPU 30 5 PWRLIMIT_CPU 88
Place R0304 & R0306 for XDP function UM6K1N UM6K1N
1
4
GND GND
Title : CPU PENRYN ULV FSB
ASUSTeK COMPUTER INC Engineer: Jerry Yu
Size Project Name Rev
Custom UL20A 2.0
Date: Monday, August 03, 2009 Sheet 3 of 97
5 4 3 2 1
5 4 3 2 1
+VCORE
+VCCP
U0301F U0301E U0301D
BD28 AL37 G25 AA15 B42 AM36
VCC101 VCCP21 VSS164 VSS280 VSS1 VSS82
BB26 AN37 G23 AC15 F44 AR35
VCC102 VCCP22 VSS165 VSS281 VSS2 VSS83
BD26 AP38 G21 Y10 D44 AU35
VCC103 VCCP23 VSS166 VSS282 VSS3 VSS84
B22 B32 J25 AD10 D42 AV34
+VCORE +VCORE VCC104 VCCP24 VSS167 VSS283 VSS4 VSS85
B24 C33 J23 AH12 F42 AW35
U0301C VCC105 VCCP25 VSS168 VSS284 VSS5 VSS86
D22 D32 J21 AE15 H42 AW33
VCC106 VCCP26 VSS169 VSS285 VSS6 VSS87
D24 E35 L25 AG15 K42 AY34
VCC107 VCCP27 VSS170 VSS286 VSS7 VSS88
F32 AB28 F24 E33 L23 AJ15 M42 AT36
VCC1 VCC68 VCC108 VCCP28 VSS171 VSS287 VSS8 VSS89
G33 AD30 F22 F34 L21 AH10 P42 AV36
VCC2 VCC69 VCC109 VCCP29 VSS172 VSS288 VSS9 VSS90
H32 AD28 H24 G35 N25 AM12 T42 BA33
VCC3 VCC70 VCC110 VCCP30 VSS173 VSS289 VSS10 VSS91
J33 Y26 H22 F36 N23 AL15 V42 BC33
D VCC4 VCC71 VCC111 VCCP31 VSS174 VSS290 VSS11 VSS92 D
K32 AB26 K24 H36 N21 AN15 Y42 BB36
VCC5 VCC72 VCC112 VCCP32 VSS175 VSS291 VSS12 VSS93
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