Schematic Diagrams
B - 16 VT8237 3/3
B.Schematic Diagrams
VT8237 3/3
Sheet 15 of 39
VT8237 3/3
VLAD[0..7]
DNCMD6
+2.5VSBPLL
LVREF_SB
H_INIT# 2
H_SMI# 2
TXEN
SB_PWRGD
R214 *0_04
TXD0 18
R202 0_04
VCOMPP
H_INTR 2
SEEDI 14
TXD2 18
SEEDO
GHI
+2.5V
R234
*0_06
LPC_FRAME#19,20
Must use +3VSUS if it want to wake
on LAN from resume function well.
MD IO 18
+2.5VSBPLL
ALL_PWROK
VLAD3
Z1515
SUSB#
SATA_LED# 17
Z1508
VBE#6
Z1503
C577
12P_50V_06
C341
.1U_50V_06
R209 0_04
+2.5VSBPLL
C355
.1U_50V_06
GND_SBPLL
VLAD6
+2.5VS
TXEN 18
C698
.1U_16V_04
+VCCRTC
SEECLK
Z1514
EEPROM
1206 DEL
PM_DPR SLPVR
C362
4.7U_10V_08
C397
.1U_50V_06
UPSTB6
H_CPUSLP# 2,4
R210
*100K_04
C682
4.7U_10V_08
R472 4.7K_04
DNSTB6
R491 0_04
+2.5VS
RXCLK 18
R590 33_1%_06
RXD1 18
APICD0
R203 4.7K_04
DEL GHL PULL UP RESISTER
+3VS
VGATE
R589 33_1%_06
+2.5VS
+3VS
VGATE
UPSTB#6
Z1518
R611 33_1%_06
SEECLK
LPC_FRAME#
UPCMD6
Near to
South
Bridge
RXD0 18
SB_PWRGD 12,21
-PHYRST 18
32KHZX1
C368
.1U_50V_06
DPRSLPVR
R569 4.7K_06
40mil
Z1516
APICCLK1
MDI O
R526 360_1%_06
R492 *0_04
H_DPSLP# 2
Z1509
LPC_AD0
LPC_DRQ#0
R539
4.7K_06
U25
74AHC1G08GW
2
1
4
3
5
TXCLK 18
LPC_AD[3:0]
R261
*33_06
H_STPC LK# 2
LPC_DRQ#1
TXD1 18
DPRSLPVR
+VCCRTC
+2.5VS
RXDV 18
PM_PWROK13,21
Z1510
SEECS
RXER 18
Z1511
VLAD0
+3V
AGP_BUSY #
R622
1. 5K_ 04
S12 SHORT
21
R591 33_1%_06
+2.5VS
H_NMI 2
32KHZX1
ALL_PWROK13,30
Z1504
APICD0
VPAR
R259 1K_06
40mil
1205
SEEDO
Z1506
+2.5VS
PM_PWROK
D17
RB751V-40
A C
SUSB#12,14,20,21,23,24,25,27,28
SATA_LED#
SEEDI
Z1501
R260
1.05K_1%_06
R609 33_1%_06
SPCLK 10
PEXHPSCI#
R276 360_1%_06
+VCCRTC
VLAD5
APICD1
LPC_AD3
ADD GND SHIELD
LPC_AD2
R471 *4.7K_04
VLAD4
BGA2C
VT8237R plus-BGA539/VT8237A-BGA541
H25
G26
K26
J23
F26
G25
K22
K24
A11
B11
B9
B10
A10
C11
C10
A9
A7
B7
C7
B8
D8
C9
D10
A8
D11
B12
A12
C12
E7
T22
U22
E24
G23
L26
L25
E26
E25
L24
M26
H22
K23
K25
J26
J24
H26
H24
J22
E6
E11
E9
E10
AF4
L22
D9
P11
P12
P13
P14
P15
P16
R11
R15
R14
R13
R12
R16
R21
T11
T12
T16
T15
T14
T13
M24
N21
N22
N23
N24
N25
N26
P22
P23
P24
P25
P26
M21
M22
M23
AE4
AF3
AE6
AF6
C8
D12
E12
L21
K21
AD8
AF7
AE7
AD7
G24
F24
AE8
D7
AC5
AD4
U24
U26
T24
R26
T25
T26
U25
R24
V26
R22
P21
R23
U23
R25
T23
AC9
AC8
AB9
AD10
M25
L23
L19
M19
N19
P19AA21
AB19
AB22
AB25
AC18
AE17
W22
W25
AE19
AE22
AE25
AA9
T21
AA10
AB18
K19
F23
G22
F8
VAD00
VAD01
VAD02
VAD03
VAD04
VAD05
VAD06
VAD07
MC R S
MCOL
MTXD2
MTXD1
MTXD0
MTXENA
MTXC LK
MTXD3
MD C K
MD I O
MRXD3
MRXD1
MR XDV
MRXCLK
MR XE RR
MRXD2
EECS
EEDO
EEDI/EEDI*
EECK
LANVCC
PLLVCC
PLLGND
VAD08
VAD09
VAD10
VAD11
VAD12
VAD13
VAD14
VAD15
VLVREF
UPCMD
DNCMD
UPSTB+
UPSTB-
DNSTB+
DNSTB-
VLCOMP
LANGND
MIIVCC4
MIIVCC2
MIIVCC3
VBAT
VCLK
MIIVCC1
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCCVK18
VCCVK4
VCCVK5
VCCVK6
VCCVK7
VCCVK8
VCCVK9
VCCVK10
VCCVK11
VCCVK12
VCCVK13
VCCVK14
VCCVK15
VCCVK16
VCCVK17
RTCX1
RTCX2
LREQ0
LFRM
MRXD0
MIIVCC25-1
MIIVCC25-2
VCCVK3
VCCVK2
LAD0
LAD1
LAD2
LAD3
VBE
VPAR
LREQ1
PHY RST
PWRGD
RSMRST
FERR
A20M
IGNNE
INIT
INTR
NMI
SMI
STPCLK
SLP
GHI/ GPI22/ GPO22
DPSLP/GPI23/ GPO23
PCI CLK
APICCLK,GPI19
APICD0/GPIO10
APICD1/GPIO11
VGATE/GPIO8
GPI28/GPO28/VIDSEL/SATALED,GPI28/GPO28/VIDSEL
VRDPSLP/GPI29/GPO29
AGPBZ/GPI06
VCCVK19
VCCVK1
VCCVK20
VCCVK21
VCCVK22
VCCVK23GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
NC1
NC2
NC,PHYPWRDN
APICD1
C347
.1U_50V_06
AGP_BUSY # 7
DPRSLPVR
R610 33_1%_06
C574
10UF_10V_08
R255 360_1%_06
GHI
PEXHPSCI#
LPC_DRQ#1
C573
12P_50V_06
+2.5V
C592
*10P_50V_06
R608 10K_06
+3V
+VCCRTC
H_IGNNE# 2
R469 4.7K_06
H_A20M# 2
PM_DPRSLPVR 2, 28
AGP_BUSY#
NEAR TO SB
LVREF_SB=0.45V FOR VT8237A
+VDD3
VLAD1
PEXHPSCI# 6,25
SEEDI
VLAD7
FB18
HCB2012KF-121T30_08
C353
1U_10V_06
Y1
32.768KHZ
1
3
2
4
+2.5VS
J1
JOPEN
21
C359
1U_10V_06
MD C 18
SEECS
C391
.1U_50V_06
LVREF_SB
32KHZX2
SPCLK
MDIO
COL 18
APICCLK1 10
32KHZX2
Z1517
+3V
RSMRST#14, 20
R592 33_1%_06
R483 4.7K_04
C358
.1U_50V_06
VCLK_SB10
Z1505
Z1502
U35
CAT93C46S-26490T
3
2
1
4
8
5
6 7
DI
SK
CS
DO
VCC
GND
NC1 NC2
SPCLK
JBAT1
CON2_BAT
1
2
1
2
+3V
DNSTB#6
Z1512
LPC_AD1
RXD3 18
VCOMPP
TXD3 18
H_FERR# 2
SB_PWRGD
R302 2.2_06
VLAD2
C334
1U_10V_06
D16
RB751V-40
A C
R402 4.7K_04
C319
10U _10V_08
VLAD[0.. 7]6
LPC_AD[3:0]19,20
-PHYPWRDN 18
CRS 18
R245 1K_06
RXD2 18
VPAR7
LPC_DRQ#0
GND _SBPLL
Z1507
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