Service manual
Schematic Diagrams
B - 26
Schematic Diags
NS87393 LPC Bridge & Super I/O
Sheet 25 of 39
LPC Bridge &
Super I/O
VCC3S
VCC3S
VCC3S
VCC3S
VCC3S
VCC3
FIRGND
FIRGND
VCC3S
FIRVCC
FIRVCC
VCC3S
VCC3S
MBID1
MBID0
LAD2
LAD1
PINIT#
IRMODE
PPERR#
RDATA#
IRTX
BIOSCS#
IRRX
PATFD#
TRK0#
DISKCHG#
WRPRT#
PRT_NFDD#
PSTB#
MEMR#
3MODE#
LAD3
LAD1
PCLK_LPC
DRV0#
RIA#
HDSEL#
DIR#
PD6
MEMW#
SA15
LFRAME#
RDATA#
PD5
DCDA#
SA13
WGATE#
INDEX#
SD1
SD2
SD5
PD0
PD7
SD4
SA3
PACK#
LAD3
SUS_STAT#
PSLCT
DSRA#
SA6
SA0
PME#
DISKCHG#
TRK0#
PD3
PPE
SA2
SD[0..7]
LAD0
LAD2
SERIRQ
CTSA#SD3
MBID1
MTR0#
SA18
SA14
WRPRT#
PD1
PSLIN#
BIOSCS#
3MODE#
PD2
SOUTA
SINA
DTRA#
SA9
SA5
SA4
SD0
SD7
LAD[0..3]
WDATA#
PD4
RTSA#
SD6
PCIRST#
LDRQ#
FLASH#
SA16
SA1
STEP#
PBUSY
MEMR#
SA17
SA12
SA8PCLK_LPC
MBID0
SA7
SA11
RIA#
MBID1
MBID0
SA10
393-48M
IRMODE
IRRX
IRTX
SOUTA
DTRA#
RTSA#
MEMW#
SINA
DCDA#
CTSA#
INDEX#
LAD0
LDRQ#
DSRA#
L80 BK2125HS121
R199 10K(R)
R725 2.2K
T385
R201 10K
T380
R212
R
R232 10K
T387
R724
4.7K(R)
C399 0.047U
T378
T379
R727
47K
C297
0.1U
C761
0.1U
T384
T376
C282
4.7U(1206)
C762
0.1U
C932
0.1U(R)
R228
10K
T383
T382
R229
R
T188
T372
RP5
10P8Rx4.7K
1
2
3
4
5
10
6
7
8
9
R200 0(R)
R55710K
U37
HSDL-3600
1
2
7
6
8
9
3
10
4
5
11
VCC
AGNDD
GND
NC
RXD
TXD
FIR_SEL
LEAD
MDO
MD1
GNDPAD
T373
R225 0(R)
R230 10K
C259
0.1U
T
T363
T189
C269
4.7U(1206)
R210 4.7K(R)
R211
10K
RN77 8P4R-10K
1
2
3
4
7
6
5
8
R209 47K
R224 10K
R222 0
R562 1K
T364
RN92
8P4R-18
18
27
36
45
C398 0.1U
FDCCOM
LPTIR
LPC
ISA
POWER
U23
PC87393
15
16
17
18
8
9
12
6
7
11
10
19
20
14
39
63
88
13
38
64
89
21
22
23
24
25
26
27
28
29
30
31
32
33
34
52
50
48
46
45
44
43
42
35
36
37
40
41
47
49
51
53
54
55
56
57
58
59
60
61
62
70
69
68
67
3
2
1
100
99
98
97
96
4
5
73
71
72
74
75
76
77
78
79
80
81
82
83
84
85
86
87
90
91
92
93
94
95
65
66
LAD0
LAD1
LAD2
LAD3
LCLK
LRESET#
LFRAME#
CLKRUN#/GPIO36
LPCPD#
LDRQ#
SERIRQ
SMI#/GPIO35
CLKIN
VDD
VDD
VDD
VDD
VSS
VSS
VSS
VSS
DSKCHG#
HDSEL#
RDATA#
WP#
TRK0#
WGATE#
WDATA#
SETP#
DIR#
DR0#
MTR0#
INDEX#
DENSEL
DRATE0/IRSL2
INDEX#/PD0
TRK0#/PD1
WP#/PD2
RDATA#/PD3
DSKCHG#/PD4
MSEN0/PD5
DRATE0/PD6
MSEN1/PD7
XRDY/PNF
WGATE#/SLCT
WDATA#/PE
MTR1#/BUSY_WAIT#
DR1#/ACK#
STEP#/SLIN#_ASTRB#
DIR#/INIT#
HDSEL#/ERR#
DENSEL/AFD#_DSTRB#
STB#_WRITE#
DCD1#
DSR1#
SIN1
TEST/RTS1#
XCNF0/SOUT1
CTS1#
BADDR/DTR1#_BOUT1
RI1#
IRTX
IRRX1
IRRX2_IRSL0
IRSL1
XD0/GPIO00/JOYABTN1
XD1/GPIO01/JOYBBTN1
XD2/GPIO02/JOYAY
XD3/GPIO03/JOYBY
XD4/GPIO04/JOYBX
XD5/GPIO05/JOYAX
XD6/GPIO06/JOYBBTN0
XD7/GPIO07/JOYABTN0
XWR#/XCNF1
XRD#/GPIO34/WDO#
XIOWR#/XCS1#/MTR1#/DRATE0
XIORD#/GPIO37/IRSL2/DR1#
XCS0#/DR1#/XDRY/GPIO25
XA19/DCD2#/JOYABTN0/GPIO17
XA18/GPIO16/JOYBBTN0/DSR2#
XA17/GPIO15/JOYAX/SIN2
XA16/GPIO14/JOYBX/RTS2#
XA15/GPIO13/JOYBY/SOUT2
XA14/GPIO12/JOYAY/CTS2#
XA13/GPIO11/JOYBBTN1/DTR2#_BOUT2
XA12/GPIO10/JOYABTN1/RI2#
XA11/GPIO33/XIOWR#/MDTX
XA10/GPIO32/XIORD#/MDRX
XA9/GPIO31/MTR1#/PIRQD
XA8/GPIO30/PIRQC
XA7/GPIO27/PIRQB
XA6/GPIO26/PRIQA/XSTB2#
XA5/XSTB1#/XCNF2
XA4/GPIO24/XSTB0#
XA3/GPIO23
XA2/GPIO22
XA1/GPIO21
XA0/GPIO20
NC
PWUREQ#/IRSL3
R231 10K(R)
T366
R728
4.7K
C910
1000P
T365
R558 10K
C930
10U/10V(0805)
RN91
8P4R-18
18
27
36
45
C298
0.1U(R)
2 1
RN74 8P4R-47K
1
2
3
4
7
6
5
8
C907 4.7U(0805)
R223 R
C931
10U/10V(0805)(R)
R726 2.2K
C895
4.7U(1206)
T386
R198 1K
JA1
SHORT-A
1 2
LFRAME#[18,28]
LDRQ#[18]
PCIRST#[6,11,18,19,22,27,28]
PD[0..7] [26]
PACK# [26]
PBUSY [26]
PPERR# [26]
PPE [26]
PSLCT [26]
PINIT# [26]
IRRX
IRTX
IRMODE
PSLIN# [26]
PATFD# [26]
PSTB# [26]
DSRA# [26]
SOUTA [26]
DCDA# [26]
CTSA# [26]
DTRA# [26]
SINA [26]
RIA# [26]
RTSA# [26]
LAD[0..3][18,28]
393-48M
SUS_STAT#[18]
SERIRQ[18,28,29]
SD[0..7][26]
MEMW#[26]
MEMR#[26]
BIOSCS#[26]
PME#[18,26,27,28,29,30,31]
MBID0
SA0[26]
SA1[26]
SA2[26]
SA3[26]
SA12[26]
SA13[26]
SA14[26]
SA15[26]
SA16[26]
SA17[26]
SA18[26]
SA4[26]
CLK48_IO[5]
IRRX
IRTX
IRMODE
SA5[26]
SA6[26]
SA7[26]
SA8[26]
SA9[26]
SA10[26]
SA11[26]
MBID1
FLASH#[26]
PCLK_LPC[5]
Close to PC87393
FDD
LPC
Close to PC87393
CLOSE TO PC87393
COM
IR
BASE ADDRESS CONFIGURATION
DTRA# PULL-UP :4E
DTRA# PULL-DOWN :2E (DEFAULT)
XBUS RESET CONFIGURATION