Gigabyte GA-8I875PK-FJ Schematics REV.1.0
5
4
3
2
1
GIGABYTE GA-8I875PK Schematics
D D
Revision 1.0
SHEET TITLE
01
02
03
04
05
06
07
08
09
10
C C
11
12
13
14
15
16
17
18
19
20
21
22
B B
23
24
25
26
27
28
29
30
31
32
33
34
COVER SHEET
HISTORY
BLOCK DIAGRAM
P4_478A
P4_478B
P4_478C
VCORE POWER
CANTERWOOD HOST
CANTERWOOD DDR
CANTERWOOD AGP, HUB, CSA
CANTERWOOD PWR
DDR1 CHANNEL A
DDR2 CHANNEL B
DDR TERMINATION
DDR & AGP & OTHERS POWER
AGP 8X
ICH5 PCI, USB, HUB
ICH5 IDE, GPIO, SATA, CTRL
ICH5 PWR
USB
BIOS
CLOCK GENERATOR
PCI RISER
IEEE 1394
CODEC
AUDIO JACK
ITE 8712 LPC I/O
COM & LPT
IDE & FLOPPY
PS2 KB & MOUSE
FAN & H/W Monitor
Misc. & ATX CONN.
TANACROSS CSA LAN-1
TANACROSS CSA LAN-2
35 TANACROSS CSA LAN-3
A A
36
TEST POINT
5
COMPONENT SIDE
(1 oz. Copper)
VCC SIDE
(1 oz. Copper)
GND SIDE
(1 oz. Copper)
SOLDER SIDE
(1 oz. Copper)
Title
Size Document Number Rev
C
4
3
2
Date: Sheet of
GIGABYTE CORP.
COVER SHEET
GA-8I875PK 1.0
1
1 39
5
Model Name: GA-8I875PK
Version : 0.1
Component history
4
3
2
1
DATE CHANGE LIST
D D
0609 IEEE 1394 specification change
P.24 IEEE 1394 change to TSB43AB23
0609
INTEL FMB1.5 requirement
P.7 Add SQ1~SQ4 Low-side MOSFET on solder
side for FMB1.5
0609 P.25 Add R504,R505 6.8K/6 and R506,R507
10K/6 on LINE_IN_R and LINE_IN_L
P.26 Add PC_BEEP connection to CODEC pin12
P.26 Add R514 22K/6 for AMP external gain set
P.26 Add R508 100K/6 for shutdown circuit
control
P.26 MIC_IN reference voltage change
(R323,R324,C183 unmount and R322 add
2.2K/6)
0609 VCCVID power improve
P.15 VCCVID reserved EC63 100uF
0609
VDDQ thermal issue
C C
B B
P.15 DDR25V reserved D22 1N5820
0609 Make more room for CPU VR placement
P.7 Removed EC9,EC14
0609 PSU_CONN circuit modify
P.32 PSU_CONN pin2~4 add R511~R513 0/6
P.31 PWR_FAN change connection to FANIO3 and
FANPWM3
0610 PSU_CONN circuit modify
P.32 PSU_CONN pin3,5~7 disconnect
P.32 PSU_CONN pin2.,4 pull up R494,R495
4.7K/6
P.31 Removed PWR_FAN control circuit
P.18 R217 change to 4.7K/6
0610
Audio circuit modify
P.31 Removed PC_BEEP,MONO_OUT circuit
P.32 Removed amplifier shutdown control
circuit
P.32 LINE_OUT pin3,4 connection to
amplifier pin4
0610 H/W monitor 3VDUAL change to 5VSB
P.31 Add R516 8.2K/6
P.31 R391 connection to 5VSB
0610
5VDUAL circuit change
P.15 Removed Q22,Q23 and change Q26
to 3296/TO263
0610 Make room for CODEC
P.25 EC54 change to 100uF
DATE CHANGE LIST
0611
CPU_FAN control circuit modify
P.31 CPU_FAN control circuit moify
P.27 -THRMO pull up to RN98 pin5
0611
Audio circuit modify
P.26 Connection PC_BEEP to CODEC
0612
HWM accuracy change
P.15,P.31 Change voltage sensor and thermal
sensor with 1% resistor
0612 HDD/MESSAGE LED brightness issue
P.18,P.32 MESSAGE LED control by ICH5 GPO27
CPU_FAN and PWR_FAN control circuit modify0612
P.27,P.31,P.32 FAN control circuit change
0613 CPU_FAN control circuit modify
P.31 Co-layout CPU_FAN circuit
0616 Make more room for CPU VR placement
P.7 Change all EC footprint to 8mm
P.7 Add 5 more 8mm EC for VCORE
P.7 Output Coil change to small size
P.7 Removed HIP6601A co-layout circuit
0616 Change DDR circuit
P.14 Dis-connect pull up on
CKEA[2:3],CKEB[2:3],CSA[2:3],CSB[2:3] signals
0616 CPU_FAN control circuit modify
P.31 Q23 change to MMBT2222 NPN transistor
P.31 Q29 change to 2N2907A PNP transistor
P.31 Q75 add 2N2907A PNP transistor
0617 Component change
P.7 EC5,EC8,EC10,EC67,EC68,EC70 change to
1000uF/6.3V/8C
P.7 EC13 removed
P.7 L4~L7 change to 0.9uH/25A/30/4T
P.28 EC71 change to 22uF/16V
P.28 D8 change to BAT54C
P.29 D6 change to BAT54A
0618 SMYRCOMP,SMYRCOMPVOL/H circuit modify
P.9,P.10 SMYRCOMP and SMYRCOMPVOL/H power
source come from MCH pin P33 and pin AD33
0630 LAN disable control circuit modify
P.33Reserved -LAN_RST and _RSMRST
LAN_DISABLE control circuit
0702 HP_OUT color change
HP_OUT color change to lime color
A A
Title
Size Document Number Rev
C
5
4
3
2
Date: Sheet of
GIGABYTE CORP.
HISTORY
GA-8I875PK 1.0
1
2 39
5
BLOCK DIAGRAM
4
3
2
1
CLOCK GENERATOR
INTEL Pentium4 (478)
CKVDD = 3.3V
D D
ATX POWER
5VSB,-12V,+12V,VCC,VCC3,-5V
VIN=12V
PWM/OTHER POWER
VCORE = 1.75V (650-1100MHZ) / SLEEP : 1.3V
5VSB,-12V,+12V,VCC,VCC3,3VDUAL
VTT_DDR,2_5VSTR
AGP SLOT 8X
VDDQ = 1.5V (AGP POWER 4X)
VCC3 = 3.3V
+12V = 12V
3VDUAL = 3.3V
VCC = 5V
C C
PAGE 22
PAGE 32
PAGE 7, 15
PAGE 16
GDBI_LO, GDBI_HI
GAD0~31
ADSTB0,ADSTB0ADSTB1,ADSTB1SBA0~7
SBSTB,SBSTB-
GCBE0~3ST0~2
AGP BUS
VCORE = 1.75V / SLEEP : 1.3V
VCORE = 1.55V
VCC3
MCH CANTERWOOD
VCORE = 1.75V / SLEEP : 1.3V
2_5VSTR = 2.5V(MEMORY)
VDDQ = 1.5V (AGP POWER 4X, HUBLINK)
HL0~10
CONTROL BUS
HUB LINK
PAGE 4, 5, 6
PAGE 8 ,9,10,11
DCLKA0~5
-DCLKA0~5
MAAA0~12
MABA1~5
MDA0~63
-DQSA0~7
DMA0~7
DCLKB0~5
-DCLKB0~5
MAAB0~12
MABB1~5
MDB0~63
-DQSB0~7
DMB0~7
CLK66CSA
CISTBF/CISTBS
CI0~10
CHANNEL A
DDR SDRAM DIMM X 1
CHANNEL B
DDR SDRAM DIMM X 1
2_5VSTR = 2.5V(MEMORY,SUSPEND POWER)
VTT_DDR = 1.25V
TANACROSS LAN &
USB CONN
USB X 2
RJ45 X 1
PAGE 12,13,14
PAGE 33,34,35
ICH5
SERIAL ATA X2
USB PORTS
USB X 6
VCC = 5V
5VSB = 5V
5VUSB = 5V
PAGE 20
VCC25 = 2.5V(I/O,MEMORY/I,VLINK/I)
3VDUAL = 3.3V(SUSPEND POWER)
VCC3 = 3.3V
RTCVDD = 3.3V
PAGE 17,18,19
IDE 1,2
FDD X 1
HDD X 2
VCC = 5V
PAGE 29
B B
PCI BUS
PCI RISER
+12 = 12V
-12 = -12V
VCC = 5V
VCC3 = 3V
3VDUAL = 3V
AC97 CODEC ALC655
+12V = 12V
VCC = 5V 5VSB = 5V
AVDD = 5V
A A
AUDIO PORTS :
LINE_ OUT
HP_OUT
CD_IN
LINE_IN
5
PAGE 25
MIC_IN
PAGE 26
AC97 LINK
4
IEEE 1394
1394 X 1
3VDUAL = 3V
VCC = 5V
DVDD = 3V
+12 = 12V
FAN / HWMO
VCC = 5V
5VSB = 5V
+12 = 12V
PAGE 23
LPC BUS
PAGE 24
PAGE 31
3
FWH
VCC = 5V
VCC3 = 3V
LPC I/O ITE8712F
VCC = 5VVCC3 = 3.3V
VBAT = 3V
I/O PORTS :
COMB
COMA
LPT
2
PS2
PAGE 21
PAGE 27
PAGE 28,30
Title
Size Document Number Rev
Custom
Date: Sheet of
GIGABYTE CORP.
BLOCK DIAGRAM
GA-8I875PK 1.0
1
3 39
5
4
3
2
1
VCORE
12
RN1
62/8P4R
D D
C C
34
56
78
R3 200/6
R4 62/6
TESTHI10
TESTHI9
TESTHI8
-BR0
-CPURST
-HADS (8,36)
-BNR (8)
-BR0 (8)
-BPRI (8)
-DBSY (8)
-DEFER (8)
-DRDY (8)
-HIT (8)
-HITM (8)
VCORE
-HLOCK (8)
-RS2 (8)
-RS1 (8)
-RS0 (8)
-HTRDY (8)
VCORE
R1
8.2K/6/X
BOOTSEL (7)
C1
33P/4/N/50V
C2
33P/4/N/50V
-HINIT (18,21)
-CPURST (8,36)
VCORE
AD11
AD9
AD7
AD19
AE18
AE16
AE14
AE12
AE10
AE8
AE6
AE20
AB15
AB13
AB11
AB9
AB7
AB19
AC18
AC16
AC14
AC12
AC10
AC8
AD17
AD15
AD13
E14
E12
HA[3..16]
HA[3..16](8)
-HADSTB0(8,36)
-HREQ4(8)
-HREQ3(8)
-HREQ2(8)
-HREQ1(8)
-HREQ0(8)
HA[17..31]
HA[17..31](8)
-HADSTB1(8,36)
HA16
HA15
HA14
HA13
HA12
HA11
HA10
HA9
HA8
HA7
HA6
HA5
HA4
HA3
-HADSTB0
-HREQ4
-HREQ3
-HREQ2
-HREQ1
-HREQ0
HA31
HA30
HA29
HA27
HA26
HA25
HA24
HA23
HA22
HA21
HA20
HA19
HA18
HA17
-HADSTB1
SOCKET_478A
N5
A16
N4
A15
N2
A14
M1
A13
N1
A12
M4
A11
M3
A10
L2
A9
M6
A8
L3
A7
K1
A6
L6
A5
K4
A4
K2
A3
L5
ADSTB0
H3
REQ4
J3
REQ3
J4
REQ2
K5
REQ1
J1
REQ0
AB1
A35
Y1
A34
W2
A33
V3
A32
U4
A31
T5
A30
W1
A29
R6
A28
V2
A27
T4
A26
U3
A25
P6
A24
U1
A23
T2
A22
R3
A21
P4
A20
P3
A19
R2
A18
T1
A17
R5
ADSTB1
SK478/GD/W
VCORE1
VCORE2
VCORE3
VCORE4
VCORE5
VCORE6
VCORE7
VCORE8
VCORE9
VCORE10
VCORE11
VCORE12
VCORE13
VCORE14
VCORE15
VCORE16
VCORE17
VCORE18
VCORE19
VCORE20
VCORE21
GND1
GND2
GND3
GND4
GND5
GND6
GND7
GND8
GND9
GND11
GND12
GND13
GND14
GND15
GND16
GND17
GND19
GND20
GND21
GND22
GND23
GND24
GND25
GND26
GND27
GND28
GND29
GND30
GND31
GND32
GND33
AE7
AE24
AE22
AE19
AD14
AD12
AD10
AD8
AD4
AD23
AD21
AE17
AE15
AE13
AE11
AE9
AB20
AC17
AC15
AC13
AC11
AC9
AC7
AC5
GND34
AC2
AC25
AC22
AC19
AD18
AD16
AA4
AA1
VCORE22
VCORE23
GND35
GND36
AA23
AA19
VCORE24
VCORE25
GND37
GND38
AB18
AB16
VCORE26
VCORE27
GND39
GND40
AB14
AB12
VCORE28
VCORE29
GND41
GND42
AB10
AB8
E10E8E20
VCORE30
VCORE31
GND43
GND44
AB6
AB3
VCORE32
GND45
GND46
AB24
AB21V4V1
GND47
GND48
GND49
V23W6W3
GND50
GND51
OPTIM/COMPAT
GND52
GND53
GND54
W24
W21Y5Y2
GND55
GND56
Y25
BOOTSEL
TESTHI8
TESTHI9
TESTHI10
DBSY
DEFER
DRDY
LOCK
MCERR
RESET#
TRDY
GND57
GND58
Y22
AA17
AA15
ADS
AP0
AP1
BINIT
BNR
DP3
DP2
DP1
DP0
BR0
BPRI
HIT
HITM
IERR
INIT
RS2
RS1
RS0
RSP
GND59
AA13
GND60
AD1
AE26
G1
AC1
V5
AA3
G2
L25
K26
K25
J26
U6
W4
Y3
H6
D2
H5
E2
H2
F3
E3
R2 62/6/X
AC3
W5
G4
V6
AB25
F4
G5
F1
AB2
J6
-HADS
-BNR
TESTHI8
TESTHI9
TESTHI10
-BR0
-BPRI
-DBSY
-DEFER
-DRDY
-HIT
-HITM
-HINITHA28
-HLOCK
-CPURST
-RS2
-RS1
-RS0
-HTRDY
BOOTSEL
B B
VCORE
BC1
10U/12/X5/6.3V/X
BC2
10U/12/X5/6.3V
BC3
10U/12/X5/6.3V
VCORE
BC10
10U/12/X5/6.3V/X
A A
BC11
10U/12/X5/6.3V
BC12
10U/12/X5/6.3V
VCORE
BC18
10U/12/X5/6.3V
5
BC15
10U/12/X5/6.3V
BC14
10U/12/X5/6.3V
BC4
10U/12/X5/6.3V
BC13
10U/12/X5/6.3V
BC17
10U/12/X5/6.3V/X
BC5
10U/12/X5/6.3V
BC16
10U/12/X5/6.3V/X
4
VCORE
BC21
10U/12/X5/6.3V/X
VCORE
BC6
220U/2V/SP-CAP
BC22
10U/12/X5/6.3V
BC7
220U/2V/SP-CAP
3
BC23
10U/12/X5/6.3V
BC8
220U/2V/SP-CAP
BC19
10U/12/X5/6.3V
BC9
220U/2V/SP-CAP
BC20
10U/12/X5/6.3V
C276
220U/2V/SP-CAP
C277
220U/2V/SP-CAP
2
Title
Size Document Number Rev
C
Date: Sheet of
GIGABYTE CORP.
P4_478A
GA-8I875PK 1.0
1
4 39
5
4
3
2
1
R6
169/6/1
LEGECY CPU
C3
0.1U/6/Y/25V
TMPIN1
R11 0/6S/X
C5
1U/6/Y/10V
Closed to
Pin-AA21
BC25
0.1U/6/Y/25V
VID[0..5](7,27)
BC26
220P/4/N/50V
CPUCLK(22,36)
-CPUCLK(22,36)
-STPCLK(18)
VID[0..5]
VCC_SENSE(7)
VSS_SENSE(7)
BC27
0.01U/4/X/25V
GTLREF
GTLREF (8,36)
VCORE
F17
F15
F13
F11F9F19
AA18
AA16
AA14
AA12
AA10
AA8
AB17
B13
B11B9B7
B19
C18
C16
C14
C12
C10C8C20
D17
D15
D13
D11D9D7
VCORE56
VCORE57
VCORE58
GND96
GND97
GND98
K24
K21
VCORE59
VCORE60
GND99
GND100
L26L4L1
VCORE61
VCORE62
VCORE63
GND101
GND102
GND103
L23M5M2
D19
VCORE64
GND104
GND105
M25
M22
GND106
GND107
GND108
GND109
GND110
GND111
E11E9E26E7E4E1E23
GND112
GND113
E19
GND114
GND115
F18
F16
TESTHI11
TESTHI12
GTLREF3
GTLREF2
GTLREF1
GTLREF0
PWRGOOD
PROCHOT
GND116
F14
SOCKET_478B
CPUCLK
AF22
AF23
AC26
AD26
C6
B6
B2
D1
E5
B5
Y4
AD3
AE1
AE2
AE3
AE4
AE5
AF4
AF3
AD20
A5
AE23
AD22
A4
AE21
A22
A7
B3
C4
A2
AD2
AF25
AF24
SK478/GD/W
BCLK0
BCLK1
ITP_CLK0
ITP_CLK1
A20M
FERR
IGNNE
LINT0
LINT1
SMI
STPCLK
VID5
VID4
VID3
VID2
VID1
VID0
VCCVID
VCCVIDPRG
VCCA
VCC_SENSE
VCCIOPLL
VSSA
VSS_SENSE
RSVD1
RSVD2
RSVD3
THERMDA
THERMDC
THERMTRIP
VIDPWRGD
RSVD5
RSVD7
AA11
GND61
GND62
AA9
AA26
GND63
GND64
AA7N6N3
GND65
GND66
N24
GND67
GND68
N21P5P2
GND69
GND70
P25
GND71
GND72
P22
VCORE33
VCORE34
GND73
GND74
R26R4R1
VCORE35
VCORE36
VCORE37
GND75
GND76
GND77
R23T6T3
VCORE38
VCORE39
VCORE40
GND78
GND79
GND80
T24
T21U5U2
VCORE41
VCORE42
VCORE43
GND81
GND82
GND83
U25
VCORE44
VCORE45
GND84
GND85
U22
V26
VCORE46
VCORE47
GND86
GND87
G21
H26H4H1
VCORE48
VCORE49
VCORE50
GND88
GND89
GND90
H23J5J2
VCORE51
VCORE52
VCORE53
GND91
GND92
GND93
J25
VCORE54
VCORE55
GND94
GND95
J22K6K3
-CPUCLK
-A20M
-A20M(18)
-FERR -BPM5
-FERR(18)
-IGNNE
-IGNNE(18)
INTR
INTR(18)
NMI
NMI(18)
-SMI
-SMI(18)
-STPCLK
VID5
VID4
VID3
VID2
VID1
VID0
VCOREPLL
VCC_SENSE
VCCA
VSSA
VSS_SENSE
BC28
0.01U/4/X/25V
BSEL0
BSEL1
COMP0
COMP1
BPM5
BPM4
BPM3
BPM2
BPM1
BPM0
TESTHI0
DBR#
TESTHI5
TESTHI4
TESTHI3
TESTHI2
TESTHI7
TESTHI6
TESTHI1
TRST
GND117
GND118
F12
F10
SLP
TCK
TDI
TDO
TMS
GND119
GND120
F8
AD6
AD5
A6
L24
P1
AB4
AA5
Y6
AC4
AB5
AC6
AD24
AE25
AD25
AA6
F6
AA21
F20
AC23
AC24
AC20
AC21
AB22
AA20
AA2
AB23
C3
AB26
D4
C1
D5
F7
E6
FS_A
FS_B
TESTHI11
COMP0
COMP1
-BPM4
-BPM3
-BPM2
-BPM1
-BPM0
TESTHI0
-RESET
TESTHI12
TP_AA6
TP_F6
TP_AA21
GTLREF
TESTHI2_7
TESTHI1
CPUPWROK
-PROCHOT
-CPUSLP
TCK
TDI
TDO
TMS
-TRST
FS_A (8,22)
FS_B (8,22)
VCC3
R9
220/6/X
C6
1000P/4/X/50V
VCORE
R10
330/6
C4
1000P/4/X/50V
-PROCHOT (8,15)
-CPUSLP (18)
CPUPWROK (18,36)
VCORE
R5 200/6/1
D D
C C
At least 10 mil
B B
BC24
0.01U/4/X/25V
10/10/10 mils
VCCVID
VCCVID
TMPIN1(27,31,36)
THERMN(27,36)
-THERM(18,36)
R12 2.2K/6
Note:
VCCA & VCOREPLL
define doesn't same as
old P4 design kit
VCCA VCOREPLL
R20 0/6S/X
VCORE
L1
A A
10UH/0806/120mA/S
L2
10UH/0806/120mA/S
C7
1U/8/Y/25V
C9
1U/8/Y/25V
5
VCCA
C8
4.7U/8/Y/10V
VSSA
C10
4.7U/8/Y/10V/X
VCOREPLL
As close as possible to
CPU socket
VCCA (36)
VSSA (36)
VCOREPLL (36)
Trace width doesn't
less than 12 Mil
4
VCORE
RN2
12
34
56
78
62/8P4R
R17 62/6
R566 62/6
VCORE
R21 130/6
Pull up must place end
of route
TESTHI2_7
TESTHI12
TESTHI0
TESTHI11
TESTHI1
-PROCHOT
3
VCORE
VCORE
R14 62/6
R16 62/6
RN3
62/8P4R
R19 62/6
R22 62/6
TMS
-BPM5
-BPM4
-BPM2
12
-BPM1
34
-BPM3
56
78
-BPM0
-TRST
TDI
Close to CPU
Close to CPU
Close to CPU
2
Place outside of CPU socket
TDO
TCK
COMP0
COMP1
R13 62/6
R18 62/6
R15 62/6
R7 61.9/6/1
R8 61.9/6/1
VCORE
Title
Size Document Number Rev
C
Date: Sheet of
GIGABYTE CORP.
P4_478B
GA-8I875PK 1.0
1
5 39
5
D D
4
3
2
1
VCORE
E18
E16
AF17
AF15
AF13
AF11
AF9
AF7
AF5
AF21
AF19
A18
A16
A14
A12
A10A8A20
B17
B15
VCORE77
VCORE78
GND153
GND154
B14
B12
VCORE79
VCORE80
GND155
GND156
B10
B26B8B4
VCORE81
VCORE82
VCORE83
GND157
GND158
GND159
B23
AF2
VCORE84
VCORE85
GND160
GND161
B20
C17
GND162
C15
C13
GND163
GND164
C11C9C7
GND165
GND166
AF18
GND167
GND168
AF16
AF14
GND169
GND170
AF12
AF10
GND171
AF8
GND173
GND174
AF6
AF1
GND175
GND176
AF20
A17
SKTOCC#
GND177
GND178
A15
A13
DBI#2
STBN2
STBP2
DBI#3
STBN3
STBP3
GND179
GND180
A11A9A26
D47
D46
D45
D44
D43
D42
D41
D40
D39
D38
D37
D36
D35
D34
D33
D32
D63
D62
D61
D60
D59
D58
D57
D56
D55
D54
D53
D52
D51
D50
D49
D48
GND181
GND182
AF26
T23
T22
T25
T26
R24
R25
P24
R21
N25
N26
M26
N23
M24
P21
N22
M23
P26
R22
P23
AA24
AA22
AA25
Y21
Y24
Y23
W25
Y26
W26
V24
V22
U21
V25
U23
U24
U26
V21
W22
W23
HD47
HD46
HD45
HD44
HD43
HD42
HD41
HD40
HD39
HD38
HD37
HD36
HD35
HD34
HD33
HD32
-DBI2
STBN2
STBP2
HD63
HD62
HD61
HD60
HD59
HD58
HD57
HD56
HD55
HD54
HD53
HD52
HD51
HD50
HD49
HD48
-DBI3
STBN3
STBP3
-DBI2 (8)
STBN2 (8)
STBP2 (8)
STBN3 (8,36)
STBP3 (8,36)
HD[32..47] (8)
HD[48..63] (8)
SOCKET_478C
HD[0..15]
HD[0..15](8)
C C
HD[16..31]
HD[16..31](8)
HD15
D25
D15
HD14
J21
D14
HD13
D23
D13
HD12
C26
D12
HD11
H21
D11
HD10
G22
D10
HD9
B25
D9
HD8
C24
D8
HD7
C23
D7
HD6
B24
D6
HD5
D22
D5
HD4
C21
D4
HD3
A25
D3
HD2
A23
D2
HD1
B22
D1
HD0
B21
D0
-DBI0
STBN0
STBP0
HD31
HD30
HD29
HD28
HD27
HD26
HD25
HD24
HD23
HD22
HD21
HD20
HD19
HD18
HD17
HD16
-DBI1
STBN1
STBP1
E21
E22
F21
H25
K23
J24
L22
M21
H24
G26
L21
D26
F26
E25
F24
F23
G23
E24
H22
G25
K22
J23
SK478/GD/W
DBI#0
STBN0
STBP0
D31
D30
D29
D28
D27
D26
D25
D24
D23
D22
D21
D20
D19
D18
D17
D16
DBI#1
STBN1
STBP1
GND121
F5F2F25
GND122
GND123
F22G6G3
GND124
GND125
GND126
GND127
G24C5C2
GND128
GND129
C25
GND130
GND131
C22
C19
GND132
D18
-DBI0(8,36)
STBN0(8,36)
STBP0(8,36)
-DBI1(8,36)
STBN1(8,36) -DBI3 (8,36)
STBP1(8,36)
GND133
GND134
D14
D16
GND135
GND136
GND137
D12
D10D8D6D3D24
GND138
GND139
VCORE65
GND140
GND141
D21
VCORE66
VCORE67
VCORE68
GND142
GND143
GND144
D20
E17
VCORE69
VCORE70
GND145
GND146
E15
E13A3A24
VCORE71
VCORE72
VCORE73
GND147
GND148
GND149
A21
VCORE74
VCORE75
GND150
GND151
A19
B18
VCORE76
GND152
B16
B B
A A
Title
Size Document Number Rev
C
5
4
3
2
Date: Sheet of
GIGABYTE CORP.
P4_478C
GA-8I875PK 1.0
1
6 39
8
CPU Voltage ID output
7
6
5
4
3
2
1
VCC3
RN4
1 2
1K/8P4R
3 4
5 6
7 8
R67 1K/6
VCCVID
PWROK(8,18,23,36)
VID4(5,27)
VID3(5,27)
VID2(5,27)
VID1(5,27)
VID0(5,27)
VID5(5,27)
R68 1K/6
R30 8.2K/6
D D
C C
Differential Pair 10 mil
VCORE
VCC_SENSE(5)
VSS_SENSE(5)
B B
BOOTSEL12(15)
VCCVID
R648
1K/6/X
R60 22K/6
BOOTSEL(4)
BC30
1U/6/Y/10V/X
R37 100K/6/X
R44 100/6
R45 100/6
VID3
VID2
VID1
VID0
VID4
VID5
+12V
RS5 HR10K/6
5VSB
R58
22K/6
R59 0/6
132
R24
8.2K/6
Q3
MMBT2222A/SOT23
SOT23
132
PWROK
VID4
VID3
VID2
VID1
VID0
VID5
R35 28K/6/1
C18 470P/4/N/50V/X
A
R40 4.99K/6/1
Q11
MMBT2222A/SOT23
SOT23
+12V
R23
8.2K/6
Q1
MMBT2222A/SOT23
SOT23
132
C278 10P/4/N/50V/X
R34 0/6/X
C16 5600P/6/X/50V
R641 510/6/1
R642 1.78K/6/1
C284
0.1U/6/Y/25V
C20
0.01U/4/X/25V
+12V
R55
8.2K/6
Q10
MMBT2222A/SOT23
SOT23
132
COMP
FB
B
PGNDPGND
R53 20K/6/1/X
3
D
Q8
2N7002/SOT23/X
G S
2
1
R46
150K/6
27
13
12
14
15
16
11
28
R29
4.7K/6
2
3
4
5
6
7
8
U4
ISL6556B
EN
PGOOD
VID4
VID3
VID2
VID1
VID0
VID12.5
COMP
FB
VDIFF
VSEN
RGND
REF
FS
VCC
PGND
0723
ISEN1
R27 3.9K/6
C13
1U/8/Y/25V
U3
11
BOOT1
1
PWM1
10
BOOT2
2
PWM2
R39 3.9K/6
R51 3.9K/6
R49
4.7/6
V_DR2
C22
1U/8/Y/25V
U5
BOOT1
1
PWM1
BOOT2
2
PWM2
R63 3.9K/6
C12 0.1U/8/X/25V
V12
R25
4.7/6
5
14
VCC
GND
3
6
R364.7/6
C21 0.1U/8/X/25V
V12
R50
4.7/6
V_DR1
5
14
UGATE1
VCC
PVCC
PHASE1
LGATE1
UGATE2
PHASE2
GND
PGND
LGATE2
3
6
C25 0.1U/8/X/25V
R26
4.7/6
UGATE1
PVCC
PHASE1
LGATE1
UGATE2
PHASE2
PGND
LGATE2
C14
1U/8/Y/25V
12
13
4
9
8
7
C23
1U/8/Y/25V
12
13
4
9
8
7
V12
L3 2.8uH/D/20A/3P
+
EC79
330U/D/25V/8*15
PH1
UG1
LG1
UG2
LG2
PH2
UG3
PH3
LG3
UG4
LG4
PH4
R28 4.7/6
R33 0/6S/X
R38 4.7/6C17 0.1U/8/X/25V
R43 0/6S/X
R52 4.7/6
R57 0/6S/X
R62 4.7/6
R65 0/6S/X
VIN
1
2
3
2
1
VIN
2
1
1
VIN
2
1
1
VIN
2
1
1
Q2
FDD6035/TO252
Q4
6670/TO252
3
Q5
FDD6035/TO252
3
2
Q6
6670/TO252
3
Q7
FDD6035/TO252
3
2
Q9
6670/TO252
3
Q12
FDD6035/TO252
3
2
Q13
6670/TO252
3
BC271
1U/8/Y/25V
1
+
EC1
1500U/D/16V/AK
BC32
1U/8/Y/25V
BC33
1U/8/Y/25V
BC34
1U/8/Y/25V
1
+
EC2
1500U/D/16V/AK
L4
0.9uH/D/25A/3P/4T
R32
2.2/6
C15
0.01U/4/X/25V
L5
0.9uH/D/25A/3P/4T
R41
2.2/6
C19
0.01U/4/X/25V
L6
0.9uH/D/25A/3P/4T
R56
2.2/6
C24
0.01U/4/X/25V
L7
0.9uH/D/25A/3P/4T
R64
2.2/6
C26
0.01U/4/X/25V
1
+
EC3
1500U/D/16V/AK
1
+
EC73
1500U/D/16V/AK
1
+
+
EC7
1800U/6.3V/8K/RUBY
EC6
1800U/6.3V/8K/RUBY
1
+
+
EC5
1000U/D/6.3V/8C
EC4
1800U/6.3V/8K/RUBY
1
+
+
EC11
1800U/6.3V/8K/RUBY
EC10
1000U/D/6.3V/8C
1
1
1
VCORE
1
+
EC12
1800U/6.3V/8K/RUBY
1
+
EC8
1000U/D/6.3V/8C
EC69
1800U/6.3V/8K/RUBY
1
+
EC66
1800U/6.3V/8K/RUBY
1
+
1
+
EC70
1000U/D/6.3V/8C
R31 4.7/6
BC31
1U/8/Y/25V
PGND
26
VCC
OVP
GND
1
17
PWM2
ISEN2
PWM1
ISEN1
PWM3
ISEN3
PWM4
ISEN4
TCOMP
PWM1
22
ISEN1
23
PWM2
21
ISEN2
20
PWM3PWM3
18
ISEN3ISEN3
19
PWM4
25
ISEN4
24
9
OFS
10
R47
0/6
HIP6602B/SO14
ISEN2
ISEN3
R54 4.7/6
PGND
VCC
R42
1.5M/6
A
B
R48
2K/6/X
B_DR
11
10
HIP6602B/SO14
R61 4.7/6
ISEN4
A A
R581 0/6S/X
PGND
8
7
6
5
4
3
Title
Size Document Number Rev
C
Date: Sheet of
2
GIGABYTE CORP.
VCORE POWER
GA-8I875PK 1.0
1
7 39
5
4
3
2
1
HA[3..31]
HA[3..31](4)
D D
-HREQ0(4)
-HREQ1(4)
-HREQ2(4)
-HREQ3(4)
GMCHVCCP
R77
C32
301/6/1
R78
102/6/1
0.01U/4/X/25V
C33
0.01U/4/X/25V
C34
1U/6/Y/10V
C35
0.1U/6/Y/25V
C C
B B
-HREQ4(4)
-HADSTB0(4,36)
-HADSTB1(4,36)
MCHCLK(22,36)
-MCHCLK(22,36)
R69 20/6/1
STBP0(6,36)
STBP1(6,36)
STBP2(6)
STBP3(6,36)
STBN0(6,36)
STBN1(6,36)
STBN2(6)
STBN3(6,36)
-DBI0(6,36)
-DBI1(6,36)
-DBI2(6)
-DBI3(6,36)
-RS0(4)
-RS1(4)
-RS2(4)
-HADS(4,36)
-HTRDY(4)
-DRDY(4)
-DEFER(4)
-HITM(4)
-HIT(4)
-HLOCK(4)
-BR0(4)
-BNR(4)
-BPRI(4)
-DBSY(4)
HA3
HA5
HA6
HA7
HA8
HA9
HA10
HA11
HA12
HA13
HA14
HA15
HA16
HA17
HA18
HA19
HA20
HA22
HA23
HA24
HA25
HA26
HA27
HA28
HA29
HA30
HA31
-HREQ0
-HREQ1
-HREQ2
-HREQ3
-HREQ4
-HADSTB0
-HADSTB1
MCHCLK
-MCHCLK
HRCOMP
HSWNG
STBP0
STBP1
STBP2
STBP3
STBN0
STBN1
STBN2
STBN3
-DBI0
-DBI1
-DBI2
-DBI3
-RS0
-RS1
-RS2
-HADS
-HTRDY
-DRDY
-DEFER
-HITM
-HIT
-HLOCK
-BR0
-BNR
-BPRI
-DBSY
E13
G12
E10
H12
F11
E9
F9
J9
G8
H10
J11
J7
F7
H8
A17
C17
B17
B11
C9
C13
A14
A13
A15
D8
C8
B15
D14
C12
C7
E11
F13
G13
E12
G14
G9
D16
E8
E7
A12
A6
E26
F21
D22
G19
A26
E22
B23
F19
B31
F25
C20
J17
D12
G10
G11
A9
J13
A11
D10
A8
B7
C11
H14
B13
C14
B9
U1A
HA3
HA4
HA5
HA6
HA7
HA8
HA9
HA10
HA11
HA12
HA13
HA14
HA15
HA16
HA17
HA18
HA19
HA20
HA21#
HA22
HA23
HA24
HA25
HA26
HA27
HA28
HA29
HA30
HA31
HREQ0
HREQ1
HREQ2
HREQ3
HREQ4
HADSTB0
HADSTB1
HCLKP
HCLKN
HDRCOMP
HDSWING
HDSTBP0
HDSTBP1
HDSTBP2
HDSTBP3
HDSTBN0
HDSTBN1
HDSTBN2
HDSTBN3
DBI_0
DBI_1
DBI_2
DBI_3
RS0
RS1
RS2
ADS
HTRDY
DRDY
DEFER
HITM
HIT
HLOCK
BREQ0
BNR
BPRI
DBSY
CPU INTERFACE
CTWD MCH/A2
HD10
HD11
HD12
HD13
HD14
HD15
HD16
HD17
HD18
HD19
HD20
HD21
HD22
HD23
HD24
HD25
HD26
HD27
HD28
HD29
HD30
HD31
HD32
HD33
HD34
HD35
HD36
HD37
HD38
FSB
HD39
HD40
HD41
HD42
HD43
HD44
HD45
HD46
HD47
HD48
HD49
HD50
HD51
HD52
HD53
HD54
HD55
HD56
HD57
HD58
HD59
HD60
HD61
HD62
HD63
GTLREF
HDVREF
PROCHOT#
BSEL0
BSEL1
CPURST#
PWROK#
HD0
C29
HD0
HD1HA4
D28
HD1
HD2
A28
HD2
HD3
E27
HD3
HD4
E28
HD4
HD5
C27
HD5
HD6
C28
HD6
HD7
B29
HD7
HD8
A29
HD8
HD9
B27
HD9
HD10
D26
HD11
C26
HD12
B25
HD13
A27
HD14
A25
HD15
C25
HD16
J21
HD17
H23
HD18HA21
H20
HD19
H24
HD20
G26
HD21
H22
HD22
G23
HD23
G25
HD24
G21
HD25
E24
HD26
E25
HD27
G24
HD28
F23
HD29
G22
HD30
E23
HD31
E21
HD32
A23
HD33
C23
HD34
C24
HD35
A21
HD36
D24
HD37
C22
HD38
C21
HD39
A22
HD40
D20
HD41
B21
HD42
A19
HD43
B19
HD44
C18
HD45
C19
HD46
D18
HD47
A18
HD48
J19
HD49
G20
HD50
E20
HD51
E18
HD52
E19
HD53
G18
HD54
E17
HD55
F17
HD56
G16
HD57
E16
HD58
G15
HD59
J15
HD60
E14
HD61
H16
HD62
G17
HD63
E15
F15
A7
C10
C15
C16
H18
AE9
GTLREF
MCH_GTLREF
-PROCHOT
-CPURST
PWROK
HD[0..63]
HD[0..63] (6)
C28
0.1U/6/Y/25V
FS_A
R71
1K/6
R74
8.2K/6
FS_B
R75
1K/6
GTLREF (5,36)
-PROCHOT (5,15)
FS_A (5,22)
FS_B (5,22)
R76
8.2K/6
GMCHVCCP
R70
200/6/1
R73
169/6/1/X
A A
5
C29
220P/4/N/50V
Close to GMCH side
C27
0.1U/6/Y/25V
0.1U/6/Y/25V
MCH_GTLREF
R72 0/6/X
4
GTLREF
-CPURST (4,36)
PWROK (7,18,23,36)
C31
10P/4/N/50V/XC30
Title
Size Document Number Rev
C
3
2
Date: Sheet of
GIGABYTE CORP.
CANTERWOOD HOST
GA-8I875PK 1.0
1
8 39
5
4
3
2
1
MAAB[0..12](13,14)
MDB[0..63](13,14)
DQSB[0..8](13,14)
SECCB[0..8](13,14)
Closed to MCH
DDRVREFA
BC47
2.2U/8/Y/16V
SBAA0(12,14)
SBAA1(12,14)
-SWEA(12,14)
-SCASA(12,14)
-SRASA(12,14)
-CSA0(12,14,36)
-CSA1(12,14,36)
-CSA2(36)
-CSA3(36)
CKEA0(12,14,36)
CKEA1(12,14,36)
CKEA2(36)
CKEA3(36)
DCLKA0(12,36)
-DCLKA0(12,36)
DCLKA1(12,36)
-DCLKA1(12,36)
DCLKA2(12,36)
-DCLKA2(12,36)
DCLKA3(36)
-DCLKA3(36)
DCLKA4(36)
-DCLKA4(36)
DCLKA5(36)
-DCLKA5(36)
MAAA[0..12]
MDA[0..63]
DQSA[0..8]
SECCA[0..8]
MAAA0
MAAA1
MAAA2
MAAA3
MAAA4
MAAA5
MAAA6
MAAA7
MAAA8
MAAA9
MAAA10
MAAA11
MAAA12
SBAA0
SBAA1
-SWEA
-SCASA
-SRASA
-CSA0
-CSA1
-CSA2
-CSA3
CKEA0
CKEA1
CKEA2
CKEA3
DCLKA0
-DCLKA0
DCLKA1
-DCLKA1
DCLKA2
-DCLKA2
DCLKA3
-DCLKA3
DCLKA4
-DCLKA4
DCLKA5
-DCLKA5
SMXRCOMP
SMXRCOMPVOH
SMXRCOMPVOL
DDRVREFA
BC46
0.1U/6/Y/25V
DQSA0
DQSA1
DQSA2
DQSA3
DQSA4
DQSA5
DQSA6
DQSA7
DQSA8
AC29
AH32
AG31
AJ29
AK30
AN28
AK28
AM27
AL27
AL26
AD30
AN26
AL24
W31
AB30
AM24
AL22
AL23
AN23
AE31
AE32
AN20
AM21
AG32
AG33
AM19
AL19
AG13
AN13
AH13
AN15
AJ19
AL25
AL30
AA30
AF33
U31
T33
V31
T31
P32
T30
R33
J32
J33
K30
K31
C32
R31
J31
F30
U1B
SMAA_A0
SMAA_A1
SMAA_A2
SMAA_A3
SMAA_A4
SMAA_A5
SMAA_A6
SMAA_A7
SMAA_A8
SMAA_A9
SMAA_A10
SMAA_A11
SMAA_A12
SBA_A0
SBA_A1
SWE_A
SCAS_A
SRAS_A
SCS_A0
SCS_A1
SCS_A2
SCS_A3
SCKE_A0
SCKE_A1
SCKE_A2
SCKE_A3
SCMDCLK_A0
SCMDCLK_A0#
SCMDCLK_A1
SCMDCLK_A1#
SCMDCLK_A2
SCMDCLK_A2#
SCMDCLK_A3
SCMDCLK_A3#
SCMDCLK_A4
SCMDCLK_A4#
SCMDCLK_A5
SCMDCLK_A5#
SMXRCOMP
SMXRCOMPVOH
SMXRCOMPVOL
SMVREF_A
SDQS_A0
SDQS_A1
SDQS_A2
SDQS_A3
SDQS_A4
SDQS_A5
SDQS_A6
SDQS_A7
SDQS_A8
CTWD MCH/A2
AL15
SDQ_A0
AM15
SDQ_A1
AJ17
SDQ_A2
AM16
SDQ_A3
AN14
SDQ_A4
AK16
SDQ_A5
AL16
SDQ_A6
AN16
SDQ_A7
AL17
SDQ_A8
AN17
SDQ_A9
AL21
SDQ_A10
AM22
SDQ_A11
AL18
SDQ_A12
AN19
SDQ_A13
AK20
SDQ_A14
AN21
SDQ_A15
AK24
SDQ_A16
AN25
SDQ_A17
AK26
SDQ_A18
AM28
SDQ_A19
AN24
SDQ_A20
AM25
SDQ_A21
AN27
SDQ_A22
AL28
SDQ_A23
AN29
SDQ_A24
AL29
SDQ_A25
AJ31
SDQ_A26
AH30
SDQ_A27
AJ27
SDQ_A28
AJ28
DDR Channel A
SDQ_A29
AK31
SDQ_A30
AH31
SDQ_A31
AA28
SDQ_A32
AA33
SDQ_A33
Y33
SDQ_A34
W32
SDQ_A35
AA31
SDQ_A36
AA32
SDQ_A37
Y31
SDQ_A38
W33
SDQ_A39
V33
SDQ_A40
U32
SDQ_A41
P31
SDQ_A42
N31
SDQ_A43
V30
SDQ_A44
U33
SDQ_A45
M31
SDQ_A46
M33
SDQ_A47
L31
SDQ_A48
L32
SDQ_A49
H30
SDQ_A50
G33
SDQ_A51
L33
SDQ_A52
K33
SDQ_A53
H33
SDQ_A54
H31
SDQ_A55
F33
SDQ_A56
F31
SDQ_A57
D31
SDQ_A58
E31
SDQ_A59
G32
SDQ_A60
G31
SDQ_A61
E33
SDQ_A62
E32
SDQ_A63
AG30
SECC_A0
AF31
SECC_A1
AE33
SECC_A2
AC33
SECC_A3
AJ33
SECC_A4
AH33
SECC_A5
AC31
SECC_A6
AB33
SECC_A7
MDA0
MDA1
MDA2
MDA3
MDA4
MDA5
MDA6
MDA7
MDA8
MDA9
MDA10
MDA11
MDA12
MDA13
MDA14
MDA15
MDA16
MDA17
MDA18
MDA19
MDA20
MDA21
MDA22
MDA23
MDA24
MDA25
MDA26
MDA27
MDA28
MDA29
MDA30
MDA31
MDA32
MDA33
MDA34
MDA35
MDA36
MDA37
MDA38
MDA39
MDA40
MDA41
MDA42
MDA43
MDA44
MDA45
MDA46
MDA47
MDA48
MDA49
MDA50
MDA51
MDA52
MDA53
MDA54
MDA55
MDA56
MDA57
MDA58
MDA59
MDA60
MDA61
MDA62
MDA63
SECCA0
SECCA1
SECCA2
SECCA3
SECCA4
SECCA5
SECCA6
SECCA7
MAAA[0..12](12,14)
MDA[0..63](12,14)
DQSA[0..8](12,14)
D D
C C
SECCA[0..8](12,14)
Closed to MCH
B B
MAAB[0..12]
MDB[0..63]
DQSB[0..8]
SECCB[0..8]
SBAB0(13,14)
SBAB1(13,14)
-SWEB(13,14)
-SCASB(13,14)
-SRASB(13,14)
-CSB0(13,14,36)
-CSB1(13,14,36)
-CSB2(36)
-CSB3(36)
CKEB0(13,14,36)
CKEB1(13,14,36)
CKEB2(36)
CKEB3(36)
DCLKB0(13,36)
-DCLKB0(13,36)
DCLKB1(13,36)
-DCLKB1(13,36)
DCLKB2(13,36)
-DCLKB2(13,36)
DCLKB3(36)
-DCLKB3(36)
DCLKB4(36)
-DCLKB4(36)
DCLKB5(36)
-DCLKB5(36)
SMYRCOMP
SMYRCOMPVOH
SMYRCOMPVOL
DDRVREFB
BC45
0.1U/6/Y/25V
MAAB0
MAAB1
MAAB2
MAAB3
MAAB4
MAAB5
MAAB6
MAAB7
MAAB8
MAAB9
MAAB10
MAAB11
MAAB12
SBAB0
SBAB1
-SWEB
-SCASB
-SRASB
-CSB0
-CSB1
-CSB2
-CSB3
CKEB0
CKEB1
CKEB2
CKEB3
DCLKB0
-DCLKB0
DCLKB1
-DCLKB1
DCLKB2
-DCLKB2
DCLKB3
-DCLKB3
DCLKB4
-DCLKB4
DCLKB5
-DCLKB5
DQSB0
DQSB1
DQSB2
DQSB3
DQSB4
DQSB5
DQSB6
DQSB7
DQSB8
AB26
AH29
AG29
AH27
AF27
AF24
AG25
AG23
AE23
AA25
AG22
AL20
AB31
AE21
AF21
AG20
AH19
AE29
AD29
AG18
AF18
AD27
AC27
AG17
AH17
AD31
AN12
AL14
AF16
AG26
AC28
AJ22
V26
U29
R25
U28
P26
T29
T27
R27
M30
M29
M26
M27
N32
N33
AJ21
W25
R28
L29
K26
U1C
SMAA_B0
SMAA_B1
SMAA_B2
SMAA_B3
SMAA_B4
SMAA_B5
SMAA_B6
SMAA_B7
SMAA_B8
SMAA_B9
SMAA_B10
SMAA_B11
SMAA_B12
SBA_B0
SBA_B1
SWE_B
SCAS_B
SRAS_B
SCS_B0
SCS_B1
SCS_B2
SCS_B3
SCKE_B0
SCKE_B1
SCKE_B2
SCKE_B3
SCMDCLK_B0
SCMDCLK_B0#
SCMDCLK_B1
SCMDCLK_B1#
SCMDCLK_B2
SCMDCLK_B2#
SCMDCLK_B3
SCMDCLK_B3#
SCMDCLK_B4
SCMDCLK_B4#
SCMDCLK_B5
SCMDCLK_B5#
SMYRCOMP
SMYRCOMPVOH
SMYRCOMPVOL
SMVREF_B
SDQS_B0
SDQS_B1
SDQS_B2
SDQS_B3
SDQS_B4
SDQS_B5
SDQS_B6
SDQS_B7
SDQS_B8
CTWD MCH/A2
AG14
SDQ_B0
AL13
SDQ_B1
AK14
SDQ_B2
AJ15
SDQ_B3
AJ13
SDQ_B4
AM13
SDQ_B5
AJ14
SDQ_B6
AH15
SDQ_B7
AG15
SDQ_B8
AG16
SDQ_B9
AK18
SDQ_B10
AE19
SDQ_B11
AJ16
SDQ_B12
AE17
SDQ_B13
AG19
SDQ_B14
AJ18
SDQ_B15
AG21
SDQ_B16
AH21
SDQ_B17
AH23
SDQ_B18
AG24
SDQ_B19
AJ20
SDQ_B20
AF22
SDQ_B21
AJ23
SDQ_B22
AJ24
SDQ_B23
AJ25
SDQ_B24
AJ26
SDQ_B25
AG27
SDQ_B26
AD26
SDQ_B27
AF25
DDR Channel B
SDQ_B28
AE25
SDQ_B29
AE26
SDQ_B30
AG28
SDQ_B31
Y26
SDQ_B32
AA29
SDQ_B33
W27
SDQ_B34
V27
SDQ_B35
Y27
SDQ_B36
Y29
SDQ_B37
W28
SDQ_B38
W29
SDQ_B39
U27
SDQ_B40
T26
SDQ_B41
P27
SDQ_B42
N25
SDQ_B43
V29
SDQ_B44
U25
SDQ_B45
R29
SDQ_B46
P30
SDQ_B47
N29
SDQ_B48
N27
SDQ_B49
K29
SDQ_B50
L25
SDQ_B51
P29
SDQ_B52
N28
SDQ_B53
L28
SDQ_B54
L27
SDQ_B55
K27
SDQ_B56
H29
SDQ_B57
G29
SDQ_B58
H27
SDQ_B59
J29
SDQ_B60
J28
SDQ_B61
J27
SDQ_B62
G28
SDQ_B63
AE28
SECC_B0
AF29
SECC_B1
AB27
SECC_B2
AA27
SECC_B3
AE27
SECC_B4
AC25
SECC_B5
AD32
SECC_B6
AB29
SECC_B7
MDB0
MDB1
MDB2
MDB3
MDB4
MDB5
MDB6
MDB7
MDB8
MDB9
MDB10
MDB11
MDB12
MDB13
MDB14
MDB15
MDB16
MDB17
MDB18
MDB19
MDB20
MDB21
MDB22
MDB23
MDB24
MDB25
MDB26
MDB27
MDB28
MDB29
MDB30
MDB31
MDB32
MDB33
MDB34
MDB35
MDB36
MDB37
MDB38
MDB39
MDB40
MDB41
MDB42
MDB43
MDB44
MDB45
MDB46
MDB47
MDB48
MDB49
MDB50
MDB51
MDB52
MDB53
MDB54
MDB55
MDB56
MDB57
MDB58
MDB59
MDB60
MDB61
MDB62
MDB63
SECCB0
SECCB1
SECCB2
SECCB3
SECCB4
SECCB5
SECCB6
SECCB7
BC36
1U/6/Y/10V
BC38
1U/6/Y/10V
BC41
1U/6/Y/10V
BC48
1U/6/Y/10V
BC54
1U/6/Y/10V
DDR25V
DDR25V
DDR25V
R79
10K/6/1
R80
30.9K/6/1
R81
30.9K/6/1
R82
10K/6/1
0.1U/6/Y/25V
R85
30.9K/6/1
R87
10K/6/1
R89
42.2/6/1
R91
42.2/6/1
BC35
0.01U/4/X/25V
SMXRCOMPVOH
BC37
0.1U/6/Y/25V
BC39
0.1U/6/Y/25V
R83
10K/6/1BC42
R84
30.9K/6/1
DDR25V_DCAP1
BC51
0.1U/6/Y/25V
SMXRCOMP
BC55
33P/4/N/50V/X
SMXRCOMPVOL
BC40
0.01U/4/X/25V
DDR25V_DCAP1
BC43
0.01U/4/X/25V
BC44
0.1U/6/Y/25V
SMYRCOMPVOL
BC53
0.01U/4/X/25V
SMXRCOMPVOL (36)
DDR25V_DCAP1 (10)
SMYRCOMPVOH
SMXRCOMP (36)
DDR25V_DCAP3
R90
42.2/6/1
DDR25V
A A
5
DDR25V
EC15
100U/D/10V/5*11
BC49
0.1U/6/Y/25V
4
BC50
0.1U/6/Y/25V
R86
150/6
DDRVREFB
BC52
2.2U/8/Y/16V
DDRVREFB (36)
2
R88
150/6
3
R92
42.2/6/1
SMYRCOMP
BC56
33P/4/N/50V/X
Title
Size Document Number Rev
C
Date: Sheet of
DDR25V_DCAP3 (10)
GIGABYTE CORP.
CANTERWOOD DDR
GA-8I875PK 1.0
1
9 39
5
4
3
2
1
Y20
Y18
Y16
Y14
W19
W17
W15
V20
V18
V16
V14
V11
U19
U17
U15
U11
T20
T18
T16
T14
T11
T10
R19
R17
R15
R11
R10
P20
P18
P16
P14
P11
P10
P9
N11
N10
N9
N8
N7
M11
M10
M9
M8
M7
M6
L11
L10
K6
K5
AE1
AA1
T1
N4
N3
M4
M3
M2
K4
K3
K2
K1
H3
H2
H1
G3
G2
G1
F1
F2
E1
L9
L8
L7
L6
L5
J6
J5
L4
L3
L2
L1
J4
J3
J2
J1
U1G
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCC_AGP
VCCA_AGP
VCCA_AGP
CTWD MCH/A2
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCC_DDR
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
VCCHI
AN30
AN22
AN18
AN11
AN10
AM12
AM11
AM10
AL12
AL11
AL10
AK12
AK11
AK10
AJ12
AJ11
AJ10
AH12
AH11
AH10
AG12
AG11
AG10
AF12
AF11
AF10
AE15
AE12
AE11
AE10
AD33
AD24
AD22
AD20
AD18
AD16
AD14
AD12
AD11
AD10
AC21
AC19
AC17
AC15
AC13
AC12
AC11
AC10
AB24
AA23
Y24
W23
V24
U23
T24
R23
P33
P24
N23
D33
AN8
AN5
AA10
Y11
Y10
Y9
W11
W10
W9
V10
V9
U10
U9
T9
T8
T7
R9
R8
R7
R6
R5
P8
P7
P6
P5
N6
N5
M5
DDR25V
DDR25V_DCAP6
DDR25V_DCAP4
DDR25V_DCAP2
DDR25V_DCAP3
DDR25V_DCAP1
DDR25V_DCAP5
VCCHI_DCAP8
VCORE_DCAP4
VDDQ
C53 0.47U/6/Y/16V
C51 0.22U/6/Y/16V
C49 0.1U/6/Y/25V
DDR25V_DCAP3 (9)
DDR25V_DCAP1 (9)
C52 1U/6/Y/10V
C38 0.1U/6/Y/25V
C43 0.22U/6/Y/16V
VCORE_DCAP3
VCORE_DCAP2
VCORE_DCAP1
VDDQ
GAD[0..31](16)
D D
C C
B B
GAD[0..31]
SBA[0..7]
SBA[0..7](16)
HL[0..10]
HL[0..10](17,36)
CI[0..10]
CI[0..10](33)
AF14
AM31
AL32
AG4
AC5
AA3
V3
U7
U8
W8
AD2
AC1
AC3
G7
AL4
AK5
AM4
AJ6
AN6
AL8
AM8
AN7
AL7
AN4
AM6
AK6
AL5
AF1
AD3
AD1
AG9
AK9
AL9
AH9
AF7
AF6
AG6
AH5
AH7
AE7
AH8
AK7
AJ8
AG1
AE3
AF2
AE8
AC7
AN9
AC9
AG8
A5
U1D
GCBE0
GCBE1
GCBE2
GCBE3
GST0
GST1
GST2
GVREF
GVSWING
GRCOMP
GCLKIN
HI0
HI1
HI2
HUB
HI3
HI4
HI5
HI6
HI7
HI8
HI9
HI10
HISTRF
HISTRS
HI_VREF
HI_SWING
HI_RCOMP
CI0
CI1
CI2
CSA
CI3
CI4
CI5
CI6
CI7
CI8
CI9
CI10
CISTRF
CISTRS
CI_VREF
CI_SWING
CI_RCOMP
EXTTS
RSTIN
ICH_SYNC
RESERVED_1
RESERVED_2
RESERVED_3
RESERVED_4
RESERVED_5
RESERVED_6
CTWD MCH/A2
GADSTBF0
GADSTBS0
GADSTBF1
GADSTBS1
AGP
GSBSTBF
GSBSTBS
GSBA0#
GSBA1#
GSBA2#
GSBA3#
GSBA4#
GSBA5#
GSBA6#
GSBA7#
GFRAME
GDEVSEL
VGA
GTRDY
GSTOP
GPAR/ADD_DETECT
DBI_LO
GAD0
GAD1
GAD2
GAD3
GAD4
GAD5
GAD6
GAD7
GAD8
GAD9
GAD10
GAD11
GAD12
GAD13
GAD14
GAD15
GAD16
GAD17
GAD18
GAD19
GAD20
GAD21
GAD22
GAD23
GAD24
GAD25
GAD26
GAD27
GAD28
GAD29
GAD30
GAD31
GIRDY
GREQ
GGNT
GRBF
GWBF
DBI_HI
ADSTB0
AF3
AG3
V1
V2
AK1
AK2
AJ1
AK3
AJ3
AJ4
AH2
AH1
AF5
AE4
AE5
AD5
AD6
AD8
AC4
AC8
AA4
Y2
Y1
W1
Y3
W4
W3
U1
U3
U4
R1
T2
T3
R3
P1
R4
Y6
W5
V5
V6
Y7
W7
AA8
Y5
AA5
AA7
AB7
AB2
AB6
AB1
AB5
AB3
T5
T6
V7
U5
N1
P2
-ADSTB0
ADSTB1
-ADSTB1
GAD0
GAD1
GAD2
GAD3
GAD4
GAD5
GAD6
GAD7
GAD8
GAD9
GAD10
GAD11
GAD12
GAD13
GAD14
GAD15
GAD16
GAD17
GAD18
GAD19
GAD20
GAD21
GAD22
GAD23
GAD24
GAD25
GAD26
GAD27
GAD28
GAD29
GAD30
GAD31
SBSTB
-SBSTB
SBA0
SBA1
SBA2
SBA3
SBA4
SBA5
SBA6
SBA7
-GFRAME
-GDEVSEL
-GIRDY
-GTRDY
-GSTOP
GPAR
-GREQ
-GGNT
-RBF
-WBF
-PIPE
GDBI_LO
ADSTB0 (16,36)
-ADSTB0 (16,36)
ADSTB1 (16,36)
-ADSTB1 (16,36)
SBSTB (16,36)
-SBSTB (16,36)
-GFRAME (16,36)
-GDEVSEL (16)
-GIRDY (16)
-GTRDY (16)
-GSTOP (16)
GPAR (16)
-GREQ (16)
-GGNT (16)
-RBF (16)
-WBF (16)
-PIPE (16)
GDBI_LO (16)
C42 0.47U/6/Y/16V
C41 0.1U/6/Y/25V
C40 0.1U/6/Y/25V
ST0(16)
ST1(16)
ST2(16)
-GCBE0
-GCBE1
-GCBE2
-GCBE3
ST0
ST1
ST2
MCH_AGPREF
GSWING
GRCOMP
GMCH3V66
HL0
HL1
HL2
HL3
HL4
HL5
HL6
HL7
HL8
HL9
HL10
HLSTBF
HLSTBS
HL_VREF_MCH
HL_SWING_MCH
HLRCOMP_MCH
CI0
CI1
CI2
CI3
CI4
CI5
CI6
CI7
CI8
CI9
CI10
CLVREF_SPG
CLSWING_SPG
CLRCOMP
-PCIRST
-ICHSYNC
C39
0.1U/6/Y/25V
-GCBE0(16)
-GCBE1(16)
-GCBE2(16)
-GCBE3(16)
MCH_AGPREF(16,36)
GSWING(16,36)
R100 40.2/6/1
VDDQ
GMCH3V66(22,36)
HLSTBF(17,36)
HLSTBS(17,36)
C36 0.1U/4/Y/16V
C37 0.1U/4/Y/16V
R99 52.3/6/1
VDDQ
CI[10:0](33)
CISTBF(33)
CISTBS(33)
CLVREF_SPG(11)
CLSWING_SPG(11)
-PCIRST(17,21,23,24,27,33,36)
-ICHSYNC(18)
Close to MCH
GMCHVCCP
R94 52.3/6/1
VDDQ
C44 10P/4/N/50V/X
R93 1K/6
Place mid of bus trace
10 mil trace with 7 mil space
0.8V
HL_SWING_ICH(17,36)
VDDQ*0.233
HL_VREF_MCH(36)
HL_VREF_ICH(17,36)
5
CLOSED TO MCH
GSWING
C45 0.1U/6/Y/25V
MCH_AGPREF
C46 0.1U/4/Y/16V
4
A A
HL_SWING_MCH
HL_SWING_ICH
HL_VREF_MCH
HL_VREF_ICH
R96 0/6S/X
R98 0/6S/X
3
C47
0.1U/6/Y/25V
C54
0.1U/6/Y/25V
VDDQ
R95
226/6/1
R97
147/6/1
R101
113/6/1
2
DDR25V
C50
0.22U/6/Y/16V
C48
0.47U/6/Y/16V
Title
Size Document Number Rev
C
Date: Sheet of
GIGABYTE CORP.
CANTERWOOD AGP,HUB,CSA
GA-8I875PK 1.0
1
10 39
5
4
3
2
1
Close to N/B
C60
0.1U/6/Y/25V
C62
0.1U/6/Y/25V
VDDQ
1 2
VDDQ
R102
226/6/1
R103
147/6/1
R104
113/6/1
VDDQ
AM29
AM26
AM23
AM20
AM17
AM14
AL31
AK27
AK25
AK19
AK17
AK15
AH28
AH22
AH18
AH14
AF32
AF30
AF26
AF23
AF20
AF17
AF15
AF13
AE24
AE22
AE20
AE18
AE16
AE14
AD28
AD25
AD23
AD21
AD19
AD17
AD15
AD13
AC32
AC30
AC24
AC20
AC18
AC16
AC14
AB28
AB25
AB11
AB10
AA26
AA24
AA11
AM9
AM7
AM5
AM3
AL6
AL3
AL2
AK8
AK4
AJ32
AJ30
AJ9
AJ7
AJ5
AJ2
AH6
AH4
AH3
AG7
AG5
AG2
AF9
AF8
AF4
AE6
AE2
AD9
AD7
AD4
AC6
AC2
AB9
AB8
AB4
AA9
AA6
AA2
U1F
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
CTWD MCH/A2
GND
Y32
VSS
Y30
VSS
Y28
VSS
Y25
VSS
Y23
VSS
Y19
VSS
Y17
VSS
Y15
VSS
Y8
VSS
Y4
VSS
W26
VSS
W24
VSS
W20
VSS
W18
VSS
W16
VSS
W14
VSS
W6
VSS
W2
VSS
V32
VSS
V28
VSS
V25
VSS
V23
VSS
V19
VSS
V17
VSS
V15
VSS
V8
VSS
V4
VSS
U26
VSS
U24
VSS
U20
VSS
U18
VSS
U16
VSS
U14
VSS
U6
VSS
U2
VSS
T28
VSS
T25
VSS
T23
VSS
T19
VSS
T17
VSS
T15
VSS
T4
VSS
R32
VSS
R30
VSS
R24
VSS
R20
VSS
R18
VSS
R16
VSS
R14
VSS
R2
VSS
P28
VSS
P25
VSS
P23
VSS
P19
VSS
P17
VSS
P15
VSS
P4
VSS
P3
VSS
N30
VSS
N24
VSS
N2
VSS
M32
VSS
M28
VSS
M25
VSS
M24
VSS
M23
VSS
M1
VSS
L26
VSS
L24
VSS
L23
VSS
L12
VSS
K32
VSS
K28
VSS
K25
VSS
K24
VSS
K23
VSS
K22
VSS
K21
VSS
K20
VSS
K19
VSS
K18
VSS
K17
VSS
K16
VSS
K15
VSS
K14
VSS
K13
VSS
K7
VSS
J30
VSS
J26
VSS
10 mil trace with 7 mil space
D D
GMCHVCCP
SC3
0.1U/6/Y/25V/X
VTT_DCAP4
VTT_DCAP1
VTT_DCAP2
VTT_DCAP3
TP_C1
TP_C2
TP_C3
TP_C4
TP_C5
TP_C6
TP_C7
TP_C8
TP_C9
TP_C10
TP_C11
TP_C12
TP_C13
TP_C14
TP_C15
TP_C16
TP_C17
TP_C18
TP_C19
TP_C20
TP_C21
TP_C22
TP_C23
TP_C24
TP_C25
TP_C26
TP_C27
TP_C28
TP_C29
TP_C30
C57 0.47U/6/Y/16V
C C
B B
DDR25V
BC267 C74
BC63
0.1U/6/Y/25V/X
0.1U/6/Y/25V
DDR25V
C55 0.47U/6/Y/16V
C56 0.47U/6/Y/16V
C58 0.22U/6/Y/16V
BC64
0.1U/6/Y/25V
AE13
AM18
AH20
AH24
AB32
AK13
AH16
AH26
AF28
AC26
AK32
AH25
AK23
AK21
AE30
AK29
AM30
AK22
AF19
AN31
AM32
AL33
L22
L21
L20
L19
L18
L17
L16
L15
L14
L13
K12
A24
A20
A16
A10
T32
L30
E29
W30
U30
R26
N26
K10
K11
AN3
AM2
AL1
C33
B32
A31
H6
H5
G6
G5
G4
F5
F4
E6
E5
E4
E3
D5
D4
D3
C6
C5
C4
C3
B5
B4
B3
D6
A4
K9
K8
C1
B2
A3
U1E
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
VTT
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TESTLOW
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
NC_1
NC_2
NC_3
NC_4
NC_5
NC_6
NC_7
NC_8
NC_9
NC_10
NC_11
NC_12
CTWD MCH/A2
POWER
VCC3_3
VCCA_FSB
VCCA_FSB
VCCA_DDR
VCCA_DDR
VCCA_DDR
VCCA_DDR
J25
VSS
J24
VSS
J23
VSS
J22
VSS
J20
VSS
J18
VSS
J16
VSS
J14
VSS
J12
VSS
J10
VSS
J8
VSS
H32
VSS
H28
VSS
H26
VSS
H25
VSS
H21
VSS
H19
VSS
H17
VSS
H15
VSS
H13
VSS
H11
VSS
H9
VSS
H7
VSS
H4
VSS
G30
VSS
G27
VSS
F32
VSS
F29
VSS
F28
VSS
F27
VSS
F26
VSS
F24
VSS
F22
VSS
F20
VSS
F18
VSS
F16
VSS
F14
VSS
F12
VSS
F10
VSS
F8
VSS
F6
VSS
F3
VSS
E30
VSS
E2
VSS
D32
VSS
D30
VSS
D29
VSS
D27
VSS
D25
VSS
D23
VSS
D21
VSS
D19
VSS
D17
VSS
D15
VSS
D13
VSS
D11
VSS
D9
VSS
D7
VSS
B6
VSS
D1
VSS
C31
VSS
C30
VSS
B30
VSS
B28
VSS
B26
VSS
B24
VSS
B22
VSS
B20
VSS
B18
VSS
B16
VSS
B14
VSS
B12
VSS
B10
VSS
B8
VSS
D2
VCC3
VCCA_FSB
C2
A30
AK33
AC23
AC22
AB23
VCCA_SM
C66 0.1U/6/Y/25V
C67 0.1U/6/Y/25V
CLSWING_SPG(10)
CLVREF_SPG(10)
C71
4.7U/8/Y/10V
4.7U/8/Y/10V
VDDQ*0.533
CLSWING_SPG
VDDQ*0.233
CLVREF_SPG
C72
0.1U/6/Y/25V
C75
0.1U/6/Y/25V
C59
0.1U/6/Y/25V
C61
0.1U/6/Y/25V
30mA15 Mil
L8 0.82UH/8/150mA/S
C73
4.7U/8/Y/10V/X
40 Mil 1000mA
L9 1.0uH/565050T/1800mA
EC16
SC15
100U/D/10V/5*11
1U/6/Y/10V/X
BC60
BC268
0.1U/6/Y/25V/X
DDR25V
DDR25V
BC269
0.1U/6/Y/25V/X
SC5
1U/6/Y/10V/X
5
A A
0.1U/6/Y/25V
BC270
0.1U/6/Y/25V/X
SC6
1U/6/Y/10V/X
0.1U/6/Y/25V
BC67
0.1U/6/Y/25V
SC7
1U/6/Y/10V/X
BC59
BC58
0.1U/6/Y/25V
BC68
0.1U/6/Y/25V/X
SC8
1U/6/Y/10V/X
BC61
0.1U/6/Y/25V
SC4
0.1U/6/Y/25V/X
SC9
1U/6/Y/10V/X
VDDQ
SC13
SC12
BC69
1U/6/Y/10V/X
4.7U/8/Y/10V
GMCHVCCP
C64
C63
0.1U/6/Y/25V
0.1U/6/Y/25V
4
1U/6/Y/10V/X
C65
0.1U/6/Y/25V
1U/6/Y/10V/X
SC14
1U/6/Y/10V/X
3
SC11
SC10
1U/6/Y/10V/X
C68
0.1U/6/Y/25V
BC71
4.7U/8/Y/10V
SC16
1U/6/Y/10V/X
C70
0.1U/6/Y/25V
VCC3
BC70
0.1U/6/Y/25V
Title
Size Document Number Rev
C
2
Date: Sheet of
GIGABYTE CORP.
CANTERWOOD PWR
GA-8I875PK 1.0
1
11 39
8
7
6
5
4
3
2
1
48
43
41
37
32
29
27
59
52
71
97
63
65
21
16
17
76
75
14
25
36
56
67
78
86
47
91
92
82
10
5
1
9
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
BA0
BA1
BA2
CS0
CS1
NC/CS2
NC/CS3
DQM0
DQM1
DQM2
DQM3
DQM4
DQM5
DQM6
DQM7
DQM8
WE
CAS
RAS
CKE0
CKE1
CK0/DNU
CK0/DNU
CK1
CK1
CK2/DNU
CK2/DNU
DQS0
DQS1
DQS2
DQS3
DQS4
DQS5
DQS6
DQS7
DQS8
SDA
SCL
SA0
SA1
SA2
VREF
VDDID
VDDSPD
NC
NC
NC
NC
NC
NC/FETEN
DDR25V
15223054627796
104
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
VDDQ
GND
GND
GND
GND
GND
3111826344250586674818993
112
128
136
143
156
164
172
180738467085108
120
148
168
DDR1
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
MDA0
2
D0
MDA1
4
D1
MDA2
6
D2
MDA3
8
D3
MDA4
94
D4
MDA5
95
D5
MDA6
98
D6
MDA7
99
D7
MDA8
12
D8
MDA9
13
D9
MDA10
19
D10
MDA11
20
D11
MDA12
105
D12
MDA13
106
D13
MDA14
109
D14
MDA15
110
D15
MDA16
23
D16
MDA17
24
D17
MDA18
28
D18
MDA19
31
D19
MDA20
114
D20
MDA21
117
D21
MDA22
121
D22
MDA23
123
D23
MDA24
33
D24
MDA25
35
D25
MDA26
39
D26
MDA27
40
D27
MDA28
126
D28
MDA29
127
D29
MDA30
131
D30
MDA31
133
D31
MDA32
53
D32
MDA33
55
D33
MDA34
57
D34
MDA35
60
D35
MDA36
146
D36
MDA37
147
D37
MDA38
150
D38
MDA39
151
D39
MDA40
61
D40
MDA41
64
D41
MDA42
68
D42
MDA43
69
D43
MDA44
153
D44
MDA45
155
D45
MDA46
161
D46
MDA47
162
D47
MDA48
72
D48
MDA49
73
D49
MDA50
79
D50
MDA51
80
D51
MDA52
165
D52
MDA53
166
D53
MDA54
170
D54
MDA55
171
D55
MDA56
83
D56
MDA57
84
D57
MDA58
87
D58
MDA59
88
D59
MDA60
174
D60
MDA61
175
D61
MDA62
178
D62
MDA63
179
D63
SECCA0
44
CB0
SECCA1
45
CB1
SECCA2
49
CB2
SECCA3
51
CB3
SECCA4
134
CB4
SECCA5
135
CB5
SECCA6
142
CB6
SECCA7
144
CB7
90
WP
GND
GND
GND
GND
GND
GND
GND
DDR/GF
124
132
139
145
152
160
176
MDA[0..63] (9,14)MAAA[0..12](9,14)
SECCA[0..7] (9,14)
VDDQ
GND
VDDQ
GND
VDDQ
GND
VDDQ
GND
VDDQ
GND
VDDQ
GND
VDDQ
GND
VDDQ
GND
100
VDD
GND
GND
116
D D
MAAA0
MAAA1
MAAA2
MAAA3
130
MAAA4
MAAA5
MAAA6
125
MAAA7
MAAA8
122
MAAA9
MAAA10
141
MAAA11
118
MAAA12
115
103
SBAA0
SBAA0(9,14)
SBAA1
SBAA1(9,14)
-CSA0(9,14,36)
-CSA1(9,14,36)
DDR25V
C C
B B
R105
75/6/1
R107
75/6/1
VREF_DDRA
VREF_DDRA (36)
-SWEA(9,14)
-SCASA(9,14)
-SRASA(9,14)
CKEA0(9,14,36)
CKEA1(9,14,36)
DCLKA1(9,36)
-DCLKA1(9,36)
DCLKA0(9,36)
-DCLKA0(9,36)
DCLKA2(9,36)
-DCLKA2(9,36)
DQSA[0..8](9,14)
SMBDATA(13,18)
SMBCLK(13,18)
C77
100P/4/N/50V/X
C78
100P/4/N/50V/X
C76 0.1U/6/Y/25V
-CSA0
-CSA1
-SWEA
-SCASA
-SRASA
CKEA0
CKEA1
DCLKA1
-DCLKA1
DCLKA0
-DCLKA0
DCLKA2
-DCLKA2
DQSA0
DQSA1
DQSA2
DQSA3
DQSA4
DQSA5
DQSA6
DQSA7
DQSA8
SMBDATA
SMBCLK
VREF_DDRA
DDR25V
113
157
158
163
107
119
129
149
159
169
177
140
154
111
137
138
181
182
183
184
101
102
173
167
CLOSE TO DDR SOCKET
DDR25V
A A
8
7
6
+
EC17
1000U/D/6.3V/8C
Title
Size Document Number Rev
C
5
4
3
Date: Sheet of
2
GIGABYTE CORP.
DDR1 CHANNEL A
GA-8I875PK 1.0
12 39
1
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