MSI MS-7255 Schematics

A

B

MS7255 Version:2.2

C

D

E

TITLE

4 4

3 3

2 2

COVER SHEET
BLOCK DIAGRAM
PWR MAP/CLOCK MAP
GPIO/MEMORY/PCI/HW STRPPING
PROCESSOR (LGA775)
NORTH BRIDGE P4M900 colay P4M890
SOUTH BRIDGE VT8237A colay VT8237S
CLOCK -- REALTEK-RTM870T-580
SYS MEM-DDRII
PCI-Express Slot x16 / x1
PCI 1 & 2
Audio - ALC660/861-CD/883/888
LAN-RTL8201CL
LAN-RTL8110SC
IDE & SATA
USB-REAR & FRONT

SHEET

1

2

3

4

5-7

8-11

12-14

15

16

17

18

19

20

21

22

23

CPU:

Intel LGA775

System Chipset:

P4M900 (North Bridge)
VT8237A (South Bridge)

On Board Chipset:

BIOS -- LPC ROM/SPI
Audio - ALC660/861-CD/883/888
LPC Super I/O -- W83627EHG/DHG
LAN --RTL8201CL/RTL8110SC
CLOCK -- REALTEK-RTM870T-580

Main Memory:

single-channel --DDRII*2

Expansion Slots:

PCI Express X16 * 1
PCI Express X1 * 1
PCI 2.2Slot * 2

LPC IO-W83627EHG/DHG & BIOS & SPI

24

KB/MS & FAN
VGA CONNECTOR

VRM
MS7 ACPI CONTROLLER
BULK/Decopuling

1 1

ATX POWER CONNECTOR / FRONT PANEL

HISTORY

Manual Part

A

B

25

26

27

28

29

30

31

32

PWM(VRM11/FMB 05A):

L6703

C

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Title

Title

Title

COVER SHEET

COVER SHEET

COVER SHEET

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

D

http://www.msi.com.tw

MS-7255

MS-7255

MS-7255

Last Revision Date:

Last Revision Date:

Last Revision Date:

Thursday, December 14, 2006

Thursday, December 14, 2006

Thursday, December 14, 2006

Sheet

Sheet

Sheet

E

132

132

132

Rev

Rev

Rev

2.2

2.2

2.2

of

of

of

Block Diagram

1

VRM 11

RT8802A

Intel LGA775 Processor

3-Phase PWM

FSB

2 DDRII
PCI-Express
X16

X16

single channel

DIMM

Modules

P4M900

PCI-Express
X1

Keyboard

Mouse

IDE Primary

IDE Secondary

A A

USB Port 0

USB Port 1

USB Port 2

USB Port 3

USB Port 4

USB Port 5

USB Port 6

X1

UltraDMA 33/66/100

USB

VT8237A

V-Link

PCI Slot

1&2

PCI BUS

1394

LPC Bus

VT6307/6308

LPC SIO
Winbond
83627DHG

USB Port 7

HD Codec
VT1708

AZ Link

Floopy

ParallelFlash

Serial

SATA 1 2LAN --VT6103L

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Title

Title

Title

BLOCK DIAGRAM

BLOCK DIAGRAM

BLOCK DIAGRAM

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

1

http://www.msi.com.tw

MS-7255

MS-7255

MS-7255

Last Revision Date:

Last Revision Date:

Last Revision Date:

Thursday, December 14, 2006

Thursday, December 14, 2006

Thursday, December 14, 2006

Sheet

Sheet

Sheet

232

232

232

Rev

Rev

Rev

2.2

2.2

2.2

of

of

of

8

7

P4M890 PLATFORM CLOCK GENERATOR MAP

6

5

4

3.3V 5V 5VSB 12V

3

2

1

P4M900 PLATFORM POWER DELIVERY MAP

Intel LGA775 Processor

1.2V VREG

3VSB VREG

DDRII 1.8
VREG

VRM

1.5VSB
VREG

2.5V VREG

2.5VSB
VREG

1.5V VREG

VTT 0.9V
VREG

CPU HOST

CLOCK GENERATOR

CLK

66MHZ
DCLKO
DCLKI
PCI-E CLK

GUICLK-14.318MHZ

PCI-E CLK

PCI-E CLK

MEM CLK

North Bridge
P4M900

PCI-E x16 Slot 1

PCI-E x1 Slot 2

DDRII Dimm Slot1,2

D D

C C

14.318MHZ

66MHZ
48MHZ

Sorth Bridge

VT8237A

PCI CLK

PCI CLK

PCI Slot 1&2

PROCESSOR VCCP

PROCESSOR 1.2V

NORTH BRIDGE VCC_PCIX
NORTH BRIDGE VCCP
NORTH BRIDGE NBVCC15
NORTH BRIDGE +2.5V

NORTH BRIDGE SYSEM MEM

1.8V VCC_DDR
NORTH BRIDGE RESUME 1.5V_SB

DDR DIMM1 / DIMM2 1.8V
DDR VTT 0.9V

SOUTH BRIDGE +2.5V
SOUTH BRIDGE VCC3
SOUTH BRIDGE RESUME 2.5V_SB
SOUTH BRIDGE RESUME VCC3_SB
SOUTH BRIDGE RTC 3.3V

LAN-PHY VCC3_SB

BIOS 5V

PCI CLK

B B

PCI CLK

48MHZ

PCI CLK

LAN

VT6103L

1394

VT6307/6308

Winbond

83627DHG

HD CODEC VDD5
VREG

LPC SUPER I/O 3.3V
LPC SUPER I/O VCC5

CLK 3.3V
DDR BUFFER +2.5V

HD CODEC VDD5

A A

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Title

Title

Title

PWR AND CLOCK MAP

PWR AND CLOCK MAP

PWR AND CLOCK MAP

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

8

7

6

5

4

3

2

http://www.msi.com.tw

MS-7255

MS-7255

MS-7255

Last Revision Date:

Last Revision Date:

Last Revision Date:

Thursday, December 14, 2006

Thursday, December 14, 2006

Thursday, December 14, 2006

Sheet

Sheet

Sheet

1

Rev

Rev

Rev

2.2

2.2

2.2

of

of

of

332

332

332

1

SB-VT8237A

GPI 0
GPI 1
GPO 0
GPO 1 O
GPIO A
GPIO B
GPIO C
GPIO D

I
I
O

I/O
I/O
I/O
I/O

FunctionTypeGPIO Pin

GPI 0
IDE2 CBD
GPO 0
GPO 0
Vlink auto compensation
IOQ Depth
HOST CLOCK
GTL pullup

Power well

RESUME
RESUME
RESUME
RESUME
MAIN
MAIN
MAIN
MAIN

PCI Config.

DEVICE

PIRQ#A
PIRQ#B

PREQ#0PCI Slot 2

PGNT#0
PIRQ#C
PIRQ#D

PCI Slot 1

PIRQ#B
PIRQ#C

PREQ#1 AD21

PGNT#1
PIRQ#D
PIRQ#A

1394 AD19

PIRQ#F

PREQ#3

PGNT#3

IDSEL

AD20

CLOCKREQ#/GNT#

PCICLK1

PCICLK2

CLK GEN PIN OUTMCP1 INT Pin

14

17

1394_PCLK 18

DDR DIMM Config.

DEVICE

DIMM 1 MDCLKA0/A#0

DIMM 2

A A

1010000B

1010001B

CLOCKADDRESS

MDCLKA1/A#1
MDCLKA2/A#2
MDCLKB0/B#0
MDCLKB1/B#1
MDCLKB2/B#2

PCI RESET DEVICE

Signals

PCIRST#

PCIRST#2

HDRST#

Source

SB
MS7
MS7

MS7

Target
MS7
NB &394 & SPIO & BIOSPCIRST#1
PCI slot 1-2 & PCIE 1-2

Primary, Scondary IDE

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Title

Title

Title

General Purpose Spec

General Purpose Spec

General Purpose Spec

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

1

http://www.msi.com.tw

MS-7255

MS-7255

MS-7255

Last Revision Date:

Last Revision Date:

Last Revision Date:

Thursday, December 14, 2006

Thursday, December 14, 2006

Thursday, December 14, 2006

Sheet

Sheet

Sheet

432

432

432

Rev

Rev

Rev

2.2

2.2

2.2

of

of

of

8

7

6

5

4

3

2

1

AN3

RSVD

D12#D8D11#

HD#11

HD#12

AN4

C11

AN6

AN5

RSVD

VSS_SENSE

VCC_SENSE

D10#

D9#

B10

A11

A10

HD#9

HD#10

HD#8

D8#

VTT_OUT_RIGHT

VID6

VID5

VID4

AM5

AL4

AK4

AJ3

AK3

VID6#

VID5#

ITP_CLK1

ITP_CLK0

D7#A7D6#B7D5#B6D4#A5D3#C6D2#A4D1#C5D0#

HD#5

HD#1

HD#6

HD#7

HD#4

HD#3

HD#2

VCC_VRM_SENSE 27
VSS_VRM_SENSE 27

VID2

VID0

VID1

VID3

AL6

AM3

AL5

AM2

VID4#

VID3#

VID2#

VID1#

VID0#

GTLREF0

BPM5#
BPM4#
BPM3#
BPM2#
BPM1#
BPM0#

PCREQ#

REQ4#
REQ3#
REQ2#
REQ1#
REQ0#

TESTHI12
TESTHI11
TESTHI10

TESTHI9
TESTHI8
TESTHI7
TESTHI6
TESTHI5
TESTHI4
TESTHI3
TESTHI2
TESTHI1
TESTHI0

RSVD
RSVD

BCLK1#
BCLK0#

RS2#
RS1#
RS0#

AP1#
AP0#
BR0#

COMP3
COMP2
COMP1
COMP0

DP3#
DP2#
DP1#
DP0#

ADSTB1#
ADSTB0#
DSTBP3#
DSTBP2#
DSTBP1#
DSTBP0#
DSTBN3#
DSTBN2#
DSTBN1#
DSTBN0#

LINT1/NMI

LINT0/INTR

ZIF-SOCK775-15u

ZIF-SOCK775-15u

B4

HD#0

H1

AG3
AF2
AG2
AD2
AJ1
AJ2

G5
J6
K6
M6
J5
K4

W2
P1
H5
G4
G3
F24
G24
G26
G27
G25
F25
W3
F26
AK6
G6

G28
F28

A3
F5
B3

U3
U2
F3

R1
G2
T1
A13

J17
H16
H15
J16

AD5
R6
C17
G19
E12
B9
A16
G20
G12
C8

L1
K1

VID6 27
VID5 27
VID4 27
VID3 27
VID2 27
VID1 27
VID0 27

CPU_GTLREF0

H_BPM#5
H_BPM#4
H_BPM#3
H_BPM#2
H_BPM#1
H_BPM#0

HREQ#4
HREQ#3
HREQ#2
HREQ#1
HREQ#0

H_TESTHI12
H_TESTHI11
H_TESTHI10
H_TESTHI9
H_TESTHI8

H_TESTHI2_7
H_TESTHI1
H_TESTHI0
RSVD_AK6
RSVD_G6

HRS#2
HRS#1
HRS#0

HBR#0

H_COMP3
H_COMP2
H_COMP1
H_COMP0

NMI_SB
INTR

CPU_GTLREF0 6

PECI_CPU 24

HREQ#[0..4] 8

R148 51R/4R148 51R/4

R173 51R/4R173 51R/4
R126 51R/4R126 51R/4
R171 51R/4R171 51R/4
R100 130R0402R100 130R0402
R142 X_51R/4R142 X_51R/4

CPUCLK# 15
CPUCLK 15

HRS#[0..2] 8

HAP0 8
HBR#0 6,8

R131 X_100R1%/4R131 X_100R1%/4C70 X_C0.1U16Y0402C70 X_C0.1U16Y0402
R146 X_100R1%/4R146 X_100R1%/4

R127 49.9R1%4R127 49.9R1%4
R159 49.9R1%4R159 49.9R1%4

HADSTB#1 8
HADSTB#0 8
HDSTBP#3 8
HDSTBP#2 8
HDSTBP#1 8
HDSTBP#0 8
HDSTBN#3 8
HDSTBN#2 8
HDSTBN#1 8
HDSTBN#0 8

NMI_SB 14
INTR 14

VID1
VID2
VID3
VID4
VID0
VID5
VID6

H_TESTHI12
H_TESTHI9
H_TESTHI10

R60 X_680R04R60 X_680R04
R66 X_680R04R66 X_680R04
R70 X_680R04R70 X_680R04
R73 X_680R04R73 X_680R04
R56 X_680R04R56 X_680R04
R74 X_680R04R74 X_680R04
R76 X_680R04R76 X_680R04

1
3
5
7

VTT_OUT_LEFT

C75

C75

X_C0.1U16Y0402

X_C0.1U16Y0402

RN13

RN13

2
4
6
8

8P4R-51R/4

8P4R-51R/4

V_FSB_VTT

VTT_OUT_RIGHT 6,7

H_COMP3
H_COMP2

VTT_OUT_LEFT 6,7

VID PULL-HI

VTT_OUT_RIGHT

VTT_OUT_LEFT

R132 49.9R1%4R132 49.9R1%4
R145 49.9R1%4R145 49.9R1%4

VTT_OUT_RIGHT

C68 C0.1U16Y0402C68 C0.1U16Y0402
C67 C0.1U16Y0402C67 C0.1U16Y0402

A20M#

1

SMI#
HINIT#
IGNNE#
INTRH_TESTHI11
SLP#
NMI_SB
STPCLK#

V_FSB_VTT

R474 2.7KR0402R474 2.7KR0402

R493

R493

X_10KR04

X_10KR04

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

C562

C562

X_C0.1U16Y0402

X_C0.1U16Y0402

SSLP# VTT_OUT_LEFT

R532 X_62R/4R532 X_62R/4

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

R119 51R/4R119 51R/4
R113 51R/4R113 51R/4
R106 51R/4R106 51R/4

PLACE BPM TERMINATION NEAR CPU

RN9

RN9

8P4R-51R/4

8P4R-51R/4

RN11

RN11

8P4R-51R/4

8P4R-51R/4

SB_THERMTRIP#

Q31

Q31
2N3904S

2N3904S

THERMTRIP#

RN3

RN3

8P4R-51R/4

8P4R-51R/4

RN4

RN4

8P4R-51R/4

8P4R-51R/4

R196 51R/4R196 51R/4

H_BPM#3
H_BPM#5
H_BPM#0
H_BPM#1
H_TDI
H_BPM#2
H_TDO
H_BPM#4

H_TMS
H_TCK
H_TRST#

VTT_OUT_RIGHT

SB_THERMTRIP# 13H_TESTHI0 8

V_FSB_VTT

HA#5

HA#3

HA#6

HA#4

L5

D20#D7D19#E9D18#F9D17#F8D16#G9D15#

D11

HD#17

HD#18

HD#14

HD#19

HD#16

HD#15

R118 X_62R/4R118 X_62R/4

AC2

DBR#

D14#

D13#

B12

C12

HD#13

CPU SIGNAL BLOCK

D D

HDBI#[0..3]8

for CONROE CPU

CPU_GTLREF26

C C

SLP#14

for CONROE CPU

VTT_OUT_LEFT

CPU_GTLREF36

B B

BSEL06,15
BSEL16,15
BSEL26,15

A A

HIERR#6

STPCLK#14

HDBSY#8

HDRDY#8

HTRDY#8

HLOCK#8

HDEFER#8

TMP_CPUTIN24

TMP_GND24

PROCHOT#6

IGNNE#14

SLP#

R120 1KR/4R120 1KR/4

T5T5

HD#[0..63]8

CPU_GTLREF2

FERR#6,14

HINIT#14

HADS#8
HBNR#8

HIT#8

HITM#8

HBPRI#8

THERMTRIP#

SMI#14

A20M#14

R135 0R/4R135 0R/4

CPU_GD6,28

CPURST#6,8

HDBI#0
HDBI#1
HDBI#2
HDBI#3

FERR#
STPCLK#

HINIT#

H_TDI
H_TDO
H_TMS
H_TRST#
H_TCK

PROCHOT#

IGNNE#
SMI#
A20M#

R520 1KR/4R520 1KR/4
R531 51R/4R531 51R/4

CPU_GTLREF3

CPU_BOOTVTT_OUT_RIGHT

HD#63
HD#62
HD#61
HD#60
HD#59
HD#58
HD#57
HD#56
HD#55
HD#54

HA#[3..31]8

SSLP#

G11
D19
C20

AB2
AB3

AD3

AD1
AF1
AC1
AG1
AE1

AK1
AE8

AH2
AE6
G10

D16

AA2
G29

H30
G30

G23

C21

C18

A8

F2

R3
M3

P3
H4

B2
C1
E3

D2
C3
C2
D4
E4
G8
G7

AL1

M2

AL2

N2
P2
K3
L2

N5
C9

A20

Y1
V2

N1

B22
A22
A19
B19
B21

B18
A17
B16

CPU1A

CPU1A

DBI0#
DBI1#
DBI2#
DBI3#

EDRDY#
IERR#
MCERR#
FERR#/PBE#
STPCLK#
BINIT#
INIT#
RSP#

DBSY#
DRDY#
TRDY#

ADS#
LOCK#
BNR#
HIT#
HITM#
BPRI#
DEFER#

TDI
TDO
TMS
TRST#
TCK
THERMDA
THERMDC
THERMTRIP#
GND/SKTOCC#
PROCHOT#
IGNNE#
SMI#
A20M#
SLP#

RSVD
RESERVED0
RESERVED1
RESERVED2
RESERVED3
RESERVED4
RESERVED5

BOOTSELECT
LL_ID0
LL_ID1

BSEL0
BSEL1
BSEL2

PWRGOOD
RESET#
D63#

D62#
D61#
D60#
D59#
D58#
D57#
D56#
D55#
D54#

B15

HD#53

D53#

C14

HD#52

D52#

C15

HD#51

D51#

HD#50

A14

D50#

D17

HD#49

AJ6

D49#

D20

HD#48

AJ5

A35#

D48#

G22

HD#47

AH5

A34#

D47#

D22

HD#46

AH4

A33#

D46#

E22

HD#45

HA#31

AG5

A32#

D45#

G21

HD#44

HA#30

AG4

A31#

D44#

F21

HD#43

HA#29

AG6

A30#

D43#

E21

HD#42

HA#28

AF4

A29#

D42#

F20

HD#41

HA#27

AF5

A28#

D41#

E19

HD#40

HA#26

AB4

A27#

D40#

E18

HD#39

HA#25

AC5

A26#

D39#

F18

HD#38

HA#24

AB5

A25#

D38#

F17

HD#37

HA#23

AA5

A24#

D37#

G17

HD#36

HA#22

AD6

A23#

D36#

G18

HD#35

HA#21

AA4

A22#

D35#

E16

HD#34

HA#20

A21#

D34#

HD#33

HA#18

HA#19

HA#17

A20#Y4A19#Y6A18#W6A17#

D33#

D32#

D31#

E15

G16

G15

HD#32

HD#31

HD#30

HA#12

HA#16

HA#13

HA#14

HA#15

AB6

A16#W5A15#V4A14#V5A13#U4A12#U5A11#T4A10#

D30#

D29#

D28#

D27#

D26#

F15

F14

E13

G14

G13

HD#26

HD#25

HD#29

HD#27

HD#28

D13

HA#11

D25#

F12

HD#24

HA#10

U6

D24#

F11

HD#23

HA#8

HA#7

HA#9

A9#T5A8#R4A7#M4A6#L4A5#M5A4#P6A3#

D23#

D22#

D21#

E10

D10

HD#20

HD#21

HD#22

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Title

Title

Title

Intel LGA775 CPU - Signals

Intel LGA775 CPU - Signals

Intel LGA775 CPU - Signals

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

8

7

6

5

4

3

http://www.msi.com.tw

2

MS-7255

MS-7255

MS-7255

Last Revision Date:

Last Revision Date:

Last Revision Date:

Thursday, December 21, 2006

Thursday, December 21, 2006

Thursday, December 21, 2006

Sheet

Sheet

Sheet

532

532

532

1

Rev

Rev

Rev

2.2

2.2

2.2

of

of

of

8

VCCP

AG21

AG19

AG18

AG15

AG14

AG12

AG11

AF9

AF8

AF22

AF21

CPU1B

AF19
AF18
AF15
AF14
AF12
AF11

AE9
AE23
AE22
AE21
AE19
AE18
AE15
AE14
AE12
AE11

AD8
AD30
AD29
AD28
AD27
AD26
AD25
AD24
AD23

AC8
AC30
AC29
AC28
AC27
AC26
AC25
AC24
AC23

AB8

AA8

VCCP

CPU1B

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

VCCW8VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

Y8

Y30

Y23

Y24

Y25

Y26

Y27

Y28

Y29

W30

VCCP

D D

C C

AG22

VCC

VCC

W29

AG25

VCC

VCC

W28

AG26

VCC

VCC

W27

AG27

VCC

VCC

W26

AG28

VCC

VCC

W25

AG29

VCC

VCC

W24

7

AG30

VCC

W23

AG8

VCC

AG9

VCC

VCCU8VCCV8VCC

AH11

VCC

VCC

U30

AH12

VCC

VCC

U29

AH14

VCC

VCC

U28

AH15

VCC

VCC

U27

AH18

VCC

VCC

U26

AH19

VCC

VCC

U25

AH21

VCC

VCC

U24

AH22

VCC

U23

AH25

VCC

VCCT8VCC

AH26

VCC

VCC

T30

AH27

VCC

VCC

T29

AH28

VCC

VCC

T28

AH29

VCC

VCC

T27

AH30

VCC

VCC

T26

AH8

T25

VCC

VCC

AH9

T24

VCC

VCC

AJ11

T23

VCC

AJ12

VCC

AJ14

VCC

AJ15

6

VCC

VCCN8VCCP8VCCR8VCC

AJ18

N30

VCC

VCC

AJ19

N29

VCC

VCC

AJ21

N28

VCC

VCC

AJ22

N27

VCC

VCC

AJ25

N26

VCC

VCC

AJ26

N25

VCC

VCC

5

AJ8

AJ9

AK11

AK12

AK14

AK15

AK18

AK19

AK21

AK22

AK25

AK26

AK8

AK9

AL11

AL12

AL14

AL15

AL18

AL19

AL21

AL22

AL25

AL26

AL29

AL30

AL8

AL9

AM11

AM12

AM14

AM15

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

VCCJ8VCCJ9VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCCK8VCCL8VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCCM8VCC

VCC

J22

J23

J24

J25

J26

J27

J28

J29

J30

K23

K24

K25

K26

K27

K28

K29

N23

N24

M27

M28

M29

M30

K30

M23

M24

M25

M26

AM18

VCC

VCC

J21

AM19

VCC

VCC

J20

AM21

VCC

VCC

J19

AM22

VCC

VCC

J18

AM25

VCC

VCC

J15

AM26

VCC

VCC

J14

4

AM29

VCC

VCC

J13

AM30

VCC

VCC

J12

AM8

VCC

VCC

J11

AM9

AN11

AN12

AN14

AN15

AN18

VCC

VCC

VCC

VCC

VCC

VCC

RSVD/VTT_PKGSENSE

VCC

VCC

VCC

VCC

VCC

VCC

J10

AN8

AN9

AN26

AN29

AN30

AN19

AN21

AN22

VCC

VCC

VCC-IOPLL

VTTPWRGD

VCC

AN25

VCC

VCCA
VSSA
RSVD

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_OUT
VTT_OUT

VTT_SEL

HS11HS22HS33HS4

4

H_VCCA

A23

H_VSSA

B23

H_VCCPLL

D23

H_VCCA

C23

A25
A26
A27
A28
A29
A30
B25
B26
B27
B28
B29
B30
C25
C26
C27
C28
C29
C30
D25
D26
D27
D28
D29
D30

VTT_PWG

AM6

VTT_OUT_RIGHT

AA1

VTT_OUT_LEFT

J1
F27

F29

ZIF-SOCK775-15u

ZIF-SOCK775-15u

3

VTT_SEL

FOR CONROE CPU

C360

C360

C1U16Y

C1U16Y

VTT_SEL 28

0
1

V_FSB_VTT

TEJ/PSC

RSVD

R626

R626
X_0R

X_0R

R6250R R6250R

2

1.5V

V_FSB_VTT

V_FSB_VTT

V_FSB_VTT

CAPS FOR FSB GENERIC

1

C97 C0.1U16Y0402C97 C0.1U16Y0402
C104 C1U16YC104 C1U16Y
C125 10U10Y/8C125 10U10Y/8
C110 X_10U10Y/8C110 X_10U10Y/8

VTT_OUT_RIGHT CPU_GTLREF0

B B

A A

VTT_OUT_RIGHT CPU_GTLREF1

VTT_OUT_LEFT

FOR CONROE CPU

VTT_OUT_LEFT CPU_GTLREF3

8

R140 124R1%04R140 124R1%04

R139 124R1%04R139 124R1%04

R343 X_124R1%04R343 X_124R1%04

R290 X_124R1%04R290 X_124R1%04

R143

R143

210R1%04

210R1%04

R141

R141

210R1%04

210R1%04

R347

R347

X_210R1%04

X_210R1%04

R382

R382

X_210R1%04

X_210R1%04

R144 10R/4R144 10R/4

C77

C77

C1U16Y

C1U16Y

R137 10R/4R137 10R/4

C79

C79

C1U16Y

C1U16Y

R404 X_10R/4R404 X_10R/4

C355

C355

X_C1U16Y

X_C1U16Y

R399 X_10R/4R399 X_10R/4

C357

C357

X_C1U16Y

X_C1U16Y

7

C78

C78

C220P50N04

C220P50N04

C76

C76

C220P50N04

C220P50N04

CPU_GTLREF2

C187

C187

X_C220P50N04

X_C220P50N04

C354

C354

X_C220P50N04

X_C220P50N04

CPU_GTLREF0 5

CPU_GTLREF1 7

CPU_GTLREF2 5

CPU_GTLREF3 5

6

V_FSB_VTT

V_FSB_VTT

VTT_OUT_RIGHT5,7

VTT_OUT_LEFT5,7

V_FSB_VTT

5

VTT_OUT_RIGHT

VTT_OUT_LEFT

RN7

RN7

1
3
5
7

8P4R-62R/4

8P4R-62R/4

FSBSEL RESISTOR CAN BE REMOVED IF ONLY TEJAS

AND CEDAR MILL ARE SUPPORTED

V_FSB_VTT

R65 130R/4R65 130R/4

2
4
6
8

CPU_GD
HBR#0
CPURST#

FERR# 5,14
HIERR# 5

C82

C82

X_C100P50N04

X_C100P50N04

BSEL2
BSEL0
BSEL1

4

R134 100R/4R134 100R/4
R150 62R/4R150 62R/4
R169 62R/4R169 62R/4

2

FERR#

4
6

HIERR#

8

FERR#

RN20

RN20

1
3
5
7

8P4R-470R/4

8P4R-470R/4

PROCHOT#

PROCHOT# 5

CPU_GD 5,28
HBR#0 5,8
CPURST# 5,8

BSEL2 5,15
BSEL0 5,15
BSEL1 5,15

PLACE COMPONENTS AS CLOSE AS POSSIBLE TO PROCESSOR SOCKET
TRACE WIDTH TO CAPS MUST BE SMALLER THAN 12MILS

V_FSB_VTT

V_FSB_VTT

VID_GD#27,28

3

L4 X_10U100m_0805L4 X_10U100m_0805

CP13

CP13
X_COPPER

X_COPPER

VTT_OUT_RIGHT

VCC5_SB

R29

R29

1KR/4

1KR/4

R41 10KR/4R41 10KR/4

C98

C98

10U10Y/8

10U10Y/8

R28

R28

680R/4

680R/4

Q2

Q2
N-PMBS3904_SOT23

N-PMBS3904_SOT23

Title

Title

Title

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

http://www.msi.com.tw

2

H_VSSA

C105

C105

X_C1U16Y

X_C1U16Y

H_VCCA

1.25V VTT_PWRGOOD

VTT_PWG

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Intel LGA775 CPU - Power

Intel LGA775 CPU - Power

Intel LGA775 CPU - Power

MS-7255

MS-7255

MS-7255

Last Revision Date:

Last Revision Date:

Last Revision Date:
Sheet

Sheet

Sheet

Rev

Rev

Rev

2.2

2.2

2.2

Thursday, December 21, 2006

Thursday, December 21, 2006

Thursday, December 21, 2006

632

632

632

of

of

of

1

8

FOR CONROE CPU

7

R52651R/4 R52651R/4

R5241KR0402 R5241KR0402

R5181KR0402 R5181KR0402

R52524.9R1%/4 R52524.9R1%/4

6

5

4

3

2

1

V27

AH3

VSS

VSS

V26

VSS

VSS

AH6

V25

V24

V23

VSS

VSS

VSS

VSSU7VSSU1VSST7VSST6VSST3VSSR7VSSR5VSS

VSS

VSS

VSS

VSS

AH7

AJ10

AJ13

AJ16

R623 X_51R0402R623 X_51R0402

R30

R29

VSS

VSS

VSS

VSS

VSS

VSS

VSS

AJ17

AJ20

AJ23

AJ24

AJ27

AJ28

AJ29

AJ30

VSS

VSS

R28

R27

VSS

VSS

VSS

VSS

AJ4

AJ7

VTT_OUT_LEFT

R26

R25

R24

R23

VSS

VSS

VSS

VSS

VSSR2VSSP7VSSP4VSS

VSS

VSS

VSS

VSS

VSS

AK2

AK10

AK13

AK16

AK17

VSS

AK20

VSS

AK23

P30

VSS

AK24

P29

VSS

VSS

AK27

P28

VSS

VSS

AK28

P27

VSS

VSS

AK29

P26

VSS

VSS

AK30

P25

P24

P23

VSS

VSS

VSS

VSSN7VSSN6VSSN3VSSM7VSSM1VSSL7VSSL6VSS

VSS

VSS

VSS

VSS

AK5

AK7

AL10

AL13

AL16

VSS

VSS

AL17

AL20

VSS

AL23

VSS

AL24

VSS

AL27

VSS

L30

AL28

VSS

VSSL3VSS

VSS

AL3

GTL_DET 8

H17

H18

H19

H20

H21

H22

H23

H24

H25

H26

H27

AM7

VID7#

AN1

VSS

VSS

AN10

VSS

AN13

VSSH3VSSH6VSSH7VSSH8VSSH9VSSJ4VSSJ7VSS

VSS

AN16

H28

H29

VSS

VSS

VSS

GTLREF_SEL

VSS

VSS

VSS

VSS

AN2

AN17

AN20

AN23

VSS

VSS

AN24

VSS

VSS

AN27

VSS

VSS

AN28

VSS

VSS

VSS

VSS

VID_SELECT

VSSB1VSS

VSS

B11

B14

AN7

VSS

VSS

H14

VSS

H13

VSS

H12

VSS

H11

VSS

H10

VSS

G1

VSS

F7

VSS

F4

VSS

F22

VSS

F19

VSS

F16

VSS

F13

VSS

F10

VSS

E8

VSS

E29

VSS

E28

VSS

E27

VSS

E26

VSS

E25

VSS

E20

VSS

E2

VSS

E17

VSS

E14

VSS

E11

VSS

D9

VSS

D6

VSS

D5

VSS

D3

VSS

D24

VSS

D21

VSS

D18

VSS

D15

VSS

D12

VSS

C7

VSS

C4

VSS

C24

VSS

C22

VSS

C19

VSS

C16

VSS

C13

VSS

C10

VSS

B8

VSS

B5

VSS

B24

VSS

B20

VSS

B17

VSS

ZIF-SOCK775-15u

ZIF-SOCK775-15u

R530 51R/4R530 51R/4

FOR CONROE CPU

R622X_1KR0402 R622X_1KR0402

VTT_OUT_LEFT

L26

VSS

VSS

AM13

L25

VSS

VSS

AM16

L24

VSS

VSS

AM17

L23

VSS

VSS

AM20

VSSK7VSS

VSS

AM23

K5

VSS

AM24

K2

VSS

AM27

VSS

AM28

VSS

AM4

L29

L28

L27

VSS

VSS

VSS

VSS

VSS

AL7

AM1

AM10

D D

COMP4

COMP5

MSID1

MSID0

RSVDJ3RSVDN4RSVD

COMP4

VSS

VSS

AF3

AF30

VSS

P5

AF6

T2

VSS

AF7

MSID1V1MSID0

COMP5

VSS

VSS

AG10

W1

VSS

AG13

COMP6

Y3

COMP6

VSS

AG16

VSS

AG17

VSSY7VSSY5VSSY2VSSW7VSSW4VSSV7VSSV6VSS

VSS

VSS

VSS

VSS

VSS

VSS

AH1

AG7

AH10

AG20

AG23

AG24

VSS

AH13

VSS

AH16

V30

VSS

AH17

VSSV3VSS

VSS

AH20

V29

VSS

AH23

V28

VSS

VSS

AH24

COMP7

AE3

AC4

AE4

D14

VSS

AE29

RSVD

VSS

AE30

COMP7

VSS

AE5

RSVD

VSS

AE7

RSVDD1RSVD

VSS

AF10

AF13

E23

VSS

AF16

CPU1C

CPU1C

A12

VSS

A15

VSS

A18

AA23
AA24
AA25
AA26
AA27
AA28
AA29

AA3

AA30

AA6
AA7

AB1
AB23
AB24
AB25
AB26
AB27
AB28
AB29
AB30

AB7

AC3

AC6

AC7

AD4

AD7
AE10
AE13
AE16
AE17

AE2
AE20
AE24
AE25
AE26
AE27
AE28

VSS

A2

VSS

A21

VSS

A24

VSS

A6

VSS

A9

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

FOR CONROE CPU

R517

R517

1KR0402

1KR0402

C C

B B

CS_GTLREF

E24

RSVD

RSVDE5RSVDE6RSVDE7RSVD

CS_GTLREF

VSS

VSS

VSS

AF17

AF20

AF23

VSS

AF24

VSS

F23

AF25

VSS

AF26

COMP8

CPU_GTLREF1

B13

H2

RSVDF6RSVD

VSS

VSS

AF27

AF28

J2

GTLVREF1

VSS

AF29

VTT_OUT_LEFT 5,6

COMP4
COMP5
COMP6
COMP7

R54 X_680R04R54 X_680R04

A A

8

CS_GTLREF

MSID1
MSID0

VID7
VID_SELECT

R136 49.9R1%/4R136 49.9R1%/4
R130 49.9R1%/4R130 49.9R1%/4
R123 49.9R1%/4R123 49.9R1%/4
R116 49.9R1%/4R116 49.9R1%/4

R84 X_680R04R84 X_680R04
R59 X_680R04R59 X_680R04

R175 0R04R175 0R04

R125 51R/4R125 51R/4
R124 51R/4R124 51R/4

7

GTLVREF_NB

CPU_GTLREF1

VTT_OUT_RIGHT 5,6

GTLVREF_NB 8

CPU_GTLREF1 6

T6T6

6

5

4

VID7

3

VID_SELECT

VID_SELECT 27VID7 27

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Title

Title

Title

Intel LGA775 CPU - GND

Intel LGA775 CPU - GND

Intel LGA775 CPU - GND

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

http://www.msi.com.tw

2

MS-7255

MS-7255

MS-7255

Last Revision Date:

Last Revision Date:

Last Revision Date:

Monday, December 18, 2006

Monday, December 18, 2006

Monday, December 18, 2006

Sheet

Sheet

Sheet

732

732

732

1

Rev

Rev

Rev

2.2

2.2

2.2

of

of

of

A

A17

A18

A19

A20

A21

B17

VTT

VTT

VTT

P4M900

P4M900

GNDA1GNDA2GNDA8GND

GND

A3

A10

B18

VTT

VTT

VTT

VTT

GND

GND

GND

A22

A25

A27

U9A

U9A

HA#3

HRS#0
HRS#1
HRS#2

HDBI#0
HDBI#1
HDBI#2
HDBI#3

GTLCOMPP

GTLCOMPN

V_FSB_VTT

HA#4
HA#5
HA#6
HA#7
HA#8
HA#9
HA#10
HA#11
HA#12
HA#13
HA#14
HA#15
HA#16
HA#17
HA#18
HA#19
HA#20
HA#21
HA#22
HA#23
HA#24
HA#25
HA#26
HA#27
HA#28
HA#29
HA#30
HA#31

HREQ#0
HREQ#1
HREQ#2
HREQ#3
HREQ#4

R204

R204

360R1%0402

360R1%0402

AA36
AA34

AA32

AB31

AC29
AC30

W35

W36
W34

W32
W31

W33

M33

N34
R33
T33
R34
P36
P34
N35
R36
U36
U34
U35
T30
U32

V32
V36
V34

V33
Y35

Y33

V31
Y31

R35

L35
K35

M34

K32
K33

L36
L34

M35

T32
T31

R32
M32
M31

N36

C31

E35
G27

D22

F22

U30

G22

H22

J32

J33

J34

J35
J36

J25

HA03#
HA04#
HA05#
HA06#
HA07#
HA08#
HA09#
HA10#
HA11#
HA12#
HA13#
HA14#
HA15#
HA16#
HA17#
HA18#
HA19#
HA20#
HA21#
HA22#
HA23#
HA24#
HA25#
HA26#
HA27#
HA28#
HA29#
HA30#
HA31#
HA32#
HA33#

HADSTB0P#
HADSTB1#

ADS#
BNR#
BPRI#
BREQ0#
DBSY#
DEFER#
DRDY#
HIT#
HITM#
HLOCK#
HTRDY#

HREQ0#
HREQ1#
HREQ2#
HREQ3#
HREQ4#
RS0#
RS1#
RS2#

HDBI0#
HDBI1#
HDBI2#
HDBI3#

CPURST#
HCLK+

HCLK-

GTLVREF0
GTLVREF1

GTLCOMPP
GTLCOMPN

HA#[3..31]5

4 4

HADSTB#05
HADSTB#15

HADS#5
HBNR#5

HBPRI#5

HBR#05,6

HDBSY#5

HDEFER#5

HDRDY#5

HIT#5

HITM#5

HREQ#[0..4]5

HRS#[0..2]5

HDBI#[0..3]5

C181

C181

C0.1U16Y0402

C0.1U16Y0402

HLOCK#5
HTRDY#5

CPURST#5,6

NBHCLK15

NBHCLK#15

GTLVREF_NB

R205

R205

180R1%04

180R1%04

3 3

GTLVREF_NB7

2 2

C180

C180

C0.1U16Y0402

C0.1U16Y0402

B

V_FSB_VTT

B19

B20

B21

C17

C18

C19

C20

C21

D17

D18

D19

D20

D21

E17

E18

E19

E20

E21

F17

F18

F19

F20

F21

G17

G18

G19

G20

G21

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

Rev1.9

Rev1.9

GND

GND

GND

GND

GNDB2GNDB3GNDB4GND

GNDC2GNDC3GNDC4GND

GND

GND

GND

GNDD4GNDD5GNDD6GNDD8GND

C5

A29

A31

A33

A35

D3

B36

C26

C27

HD00#

VTT

VTT

VTT

VTT

VTT

VTT

VTT

VTT

HD01#
HD02#
HD03#
HD04#
HD05#
HD06#
HD07#
HD08#
HD09#
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#
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#

HDSTB0P#
HDSTB0N#

HDSTB1P#
HDSTB1N#

HDSTB2P#
HDSTB2N#

HDSTB3P#
HDSTB3N#

HADSTB0N#

CPUSLPIN#

DPWR#

GND

GND

GND

GND

GND

GND

GNDE2GNDE4GND

D11

D23

D24

D29

D31

D32

D34

HD#0

B35

HD#1

A36

VTT

HD#2

C33

HD#3

C32

HD#4

E31

HD#5

B34

HD#6

B33

HD#7

A34

HD#8

D30

HD#9

A30

HD#10

B31

HD#11

B30

HD#12

E30

HD#13

C29

HD#14

B29

HD#15

C30

HD#16

D36

HD#17

F36

HD#18

G36

HD#19

H34

HD#20

H35

HD#21

F35

HD#22

G35

HD#23

C36

HD#24

D35

HD#25

F34

HD#26

F33

HD#27

G34

HD#28

G33

HD#29

E33

HD#30

H32

HD#31

G32

HD#32

E28

HD#33

E29

HD#34

D28

HD#35

D27

HD#36

C28

HD#37

H28

HD#38

G28

HD#39

F28

HD#40

E27

HD#41

D26

HD#42

D25

HD#43

E25

HD#44

F25

HD#45

G25

HD#46

H26

HD#47

H25

HD#48

B23

HD#49

B25

HD#50

E23

HD#51

B27

HD#52

B28

HD#53

A28

HD#54

B24

HD#55

B26

HD#56

A26

HD#57

C23

HD#58

C22

HD#59

A23

HD#60

G23

HD#61

A24

HD#62

B22

HD#63

E22
A32

B32
C35

C34
G26

E26
C24

C25

T35
AB32
L31

GND

E6

E5

T7T7

C

HD#[0..63] 5

HDSTBP#0 5
HDSTBN#0 5

HDSTBP#1 5
HDSTBN#1 5

HDSTBP#2 5
HDSTBN#2 5

HDSTBP#3 5
HDSTBN#3 5

HAP0 5

R502 X_4.7KR0402R502 X_4.7KR0402

FOR P4M900

For dual core

GTL_DET7

H_TESTHI05

V_FSB_VTT

V_FSB_VTT

+12V

C177 0.01U25Y/4C177 0.01U25Y/4
C144 0.01U25Y/4C144 0.01U25Y/4
C521 10U10Y/8C521 10U10Y/8
C524 10U10Y/8C524 10U10Y/8
C523 10U10Y/8C523 10U10Y/8
C515 10U10Y/8C515 10U10Y/8
C516 10U10Y/8C516 10U10Y/8
C164 C0.1U16Y0402C164 C0.1U16Y0402
C188 C0.1U16Y0402C188 C0.1U16Y0402

VCCP

R247

R247
390R1%0402

390R1%0402

R194

R194

10KR/4

10KR/4

DS

G

Q34

Q34
N-2N7002_SOT23

N-2N7002_SOT23

VCC3

R251

R251
X_249R1%0402-LF

X_249R1%0402-LF

DS

Q35

Q35

G

X_N-2N7002_SOT23

X_N-2N7002_SOT23

H_TESTHI0

NB Heatsink

2

NB1_X1

NB1_X1

HEATSINK,37.4*37.4*30mm

HEATSINK,37.4*37.4*30mm

GTLVREF_NB

V_FSB_VTT

VCC3

R256

R256
X_110R1%0402

X_110R1%0402

R275

R275
X_61.9R1%0402-LF

X_61.9R1%0402-LF

1

D

R276

R276

124R1%/4

124R1%/4

R288

R288

210R1%/4

210R1%/4

E

1 1

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Title

Title

Title

P4M900-1(HOST)

P4M900-1(HOST)

P4M900-1(HOST)

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

A

B

C

D

http://www.msi.com.tw

MS-7255

MS-7255

MS-7255

E

Last Revision Date:

Last Revision Date:

Last Revision Date:

Monday, December 25, 2006

Monday, December 25, 2006

Monday, December 25, 2006

Sheet

Sheet

Sheet

Rev

Rev

Rev

2.2

2.2

2.2

of

of

of

832

832

832

A

VCC_DDR

AC24

AD17

AD19

AD21

AA24

AB24

AD16

P4M900

P4M900

GNDE7GND

GND

E9

E34

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

GND

GNDF1GNDF2GNDF4GNDF5GNDF6GNDF7GND

E36

AD18

U9B

AF35
AG34
AJ36
AK35
AF34
AG35
AJ34
AK34
AG32
AF32
AH30
AJ31
AF31
AH32
AH31
AJ32
AK33
AL36
AP35
AL34
AL35

AM35
AT36
AM34
AK24

AL23

AM24

AJ22

AK23
AN24
AM23
AM22
AK20
AK19
AM19
AR18

AL20

AM20

AL18

AM18
AR17
AT16
AN16
AN15
AM17
AP17
AM16
AM15
AN22
AN21
AP19
AT18
AT21
AR21
AT19
AR19
AR14
AM14
AP13
AR11
AP14
AN14
AT12
AP12

AH36

AF30

AN36
AN23
AN20
AT15
AP21
AT13

U9B

MD00
MD01
MD02
MD03
MD04
MD05
MD06
MD07
MD08
MD09
MD10
MD11
MD12
MD13
MD14
MD15
MD16
MD17
MD18
MD19
MD20
MD21
MD22
MD23
MD24
MD25
MD26
MD27
MD28
MD29
MD30
MD31
MD32
MD33
MD34
MD35
MD36
MD37
MD38
MD39
MD40
MD41
MD42
MD43
MD44
MD45
MD46
MD47
MD48
MD49
MD50
MD51
MD52
MD53
MD54
MD55
MD56
MD57
MD58
MD59
MD60
MD61
MD62
MD63

DQM0#
DQM1#
DQM2#
DQM3#
DQM4#
DQM5#
DQM6#
DQM7#

DQM0
DQM1
DQM2
DQM3
DQM4
DQM5
DQM6
DQM7

MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
MD8
MD9
MD10
MD11
MD12
MD13
MD14
MD15
MD16
MD17
MD18
MD19
MD20
MD21
MD22
MD23
MD24
MD25
MD26
MD27
MD28
MD29
MD30
MD31
MD32
MD33
MD34
MD35
MD36
MD37
MD38
MD39
MD40
MD41
MD42
MD43
MD44
MD45
MD46
MD47
MD48
MD49
MD50
MD51
MD52
MD53
MD54
MD55
MD56
MD57
MD58
MD59
MD60

MD62
MD63

4 4

3 3

2 2

MD[0:63]16

DQM[0:7]16

AJ28

AD23

AD24

AJ26

AD22

AD20

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

GND

GND

GND

GND

GND

GND

F10

F14

F23

F26

F27

F29

F24

AK25

AK27

VCCMEM

GND

F30

F32

AK29

AL26

AL28

VCCMEM

VCCMEM

VCCMEM

VCCMEM

GND

GNDG1GNDG2GNDG4GNDG7GND

B

AL30

AM25

AM29

AM31

AN26

AN27

AN31

AM27

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

GND

GNDH2GNDH4GNDH7GND

H23

H24

G11

G29

AT35

AN33

AP30

AR26

AR33

AT25

AT28

AT31

AR28

BA0

AP29

BA1

VCCMEM

GND

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

VCCMEM

AP33

BA2

MAA0

AT29

MA00
MA01
MA02
MA03
MA04
MA05
MA06
MA07
MA08
MA09
MA10
MA11
MA12
MA13

SRAS#
SCAS#

SWE#

CS0#
CS1#
CS2#
CS3#

CKE0
CKE1
CKE2
CKE3

ODT0
ODT1
ODT2
ODT3

DQS0+

DQS0-

DQS1+

DQS1-

DQS2+

DQS2-

DQS3+

DQS3-

DQS4+

DQS4-

DQS5+

DQS5-

DQS6+

DQS6-

DQS7+

DQS7-

MCLKI

MCLKO+

MCLKO-

MEMVREF0
MEMVREF1

MEMDET

DMCOMP

GND

GND

GND

GNDJ2GNDJ4GNDJ5GNDJ6GND

GND

H27

H31

H36

H33

MAA1

AR30

MAA2

AR29

MAA3

AT30

MAA4

AN30

MAA5

AP31

MAA6

AR31

MAA7

AT32

MAA8

AP32

MAA9

AN32

MAA10

AN29

MAA11

AR32

MAA12

AT33

MAA13

AR25
AN28

AR27
AP28

AT27
AP27
AT24
AP26

CKEA0

AT34

CKEA1

AP34

CKEA2

AR34

CKEA3

AN34
AT26

AP25
AR24
AN25

AJ35
AH35
AH33
AH34
AR36
AP36
AR22
AP23
AP18
AN18
AP15
AR15
AP20
AR20
AR12
AR13

MCLKIT

AB34

M_CLKO+MD61

AB35
AB36

AG29
AJ18

MEMDET

AF36

AM33

DMCOMP

J7

DQS0 16
DQS0# 16
DQS1 16
DQS1# 16
DQS2 16
DQS2# 16
DQS3 16
DQS3# 16
DQS4 16
DQS4# 16
DQS5 16
DQS5# 16
DQS6 16
DQS6# 16
DQS7 16
DQS7# 16

R183 22R0402R183 22R0402
R184 22R0402R184 22R0402

MVREF_NB

1: DDR2
0: DDR1

R186 1KR0402R186 1KR0402
R188 X_1KR0402R188 X_1KR0402

R185 301R1%0402R185 301R1%0402

MAA[0:13] 16

SRASA 16
SCASA 16
SWEA 16

CS0 16
CS1 16
CS2 16
CS3 16

CKEA0 16
CKEA1 16
CKEA2 16
CKEA3 16

ODT0 16
ODT1 16
ODT2 16
ODT3 16

C

BA0 16
BA1 16
BA2 16

C138 C5P50N0402C138 C5P50N0402
C127 C5P50N0402C127 C5P50N0402
C128 C5P50N0402C128 C5P50N0402
C120 C5P50N0402C120 C5P50N0402
C119 C5P50N0402C119 C5P50N0402
C109 C5P50N0402C109 C5P50N0402
C108 C5P50N0402C108 C5P50N0402
C100 C5P50N0402C100 C5P50N0402
C99 C5P50N0402C99 C5P50N0402
C95 C5P50N0402C95 C5P50N0402
C137 C5P50N0402C137 C5P50N0402
C96 C5P50N0402C96 C5P50N0402
C92 C5P50N0402C92 C5P50N0402
C167 C5P50N0402C167 C5P50N0402
C142 C5P50N0402C142 C5P50N0402
C141 C5P50N0402C141 C5P50N0402
C91 C5P50N0402C91 C5P50N0402
C147 C5P50N0402C147 C5P50N0402
C159 C5P50N0402C159 C5P50N0402
C146 C5P50N0402C146 C5P50N0402

PULL DOWN GND OR PULL UP +1.8VDIMM

CLOSE TO DIMM

NOTE: DQS/DQS# => OTHER:W:S:W:OTHER=15:10:5:10:15

MCLKO+/- as short as passable
MCLKIT = DCLKx + 2 "

MCLKIT 15

MCLKOT 15
MCLKOC 15

VCC_DDR

C151 C5P50N0402C151 C5P50N0402 R181
C150 C5P50N0402C150 C5P50N0402
C157 C5P50N0402C157 C5P50N0402

Near to NB chip

C88

C88

MAA0
MAA1
MAA2
MAA3
MAA4
MAA5
MAA6
MAA7
MAA8
MAA9
MAA10
MAA11
MAA12
MAA13

BA0 16
BA1 16
BA2 16
SRASA 16
SCASA 16
SWEA 16

D

C166

C166

C517

C517

C518

C518

C0.1U25Y

C0.1U25Y

C0.1U25Y

C0.1U25Y

C4700P50X6

C4700P50X6

C4700P50X6

C4700P50X6

VCC_DDR

C224

C224
C0.1U25Y

C0.1U25Y

Test Point

(Place near their respective balls of NB)

VCC_DDR

R178

R178

150R1%0402

150R1%0402

MVREF_NBM_CLKO-

R181

150R1%04

150R1%04

VCC_DDR

C183 C1000P50X0402C183 C1000P50X0402

C184 C1000P50X0402C184 C1000P50X0402

C179 C1000P50X0402C179 C1000P50X0402

NEAR PM900

VCC_DDR

C174

C174

C132

C132

C4700P50X6

C4700P50X6

C1000P50X0402

C1000P50X0402

C226

C226
C0.1U25Y

C0.1U25Y

C154

C154

C163

C163

C162

C162

C1000P50X0402

C1000P50X0402

C1000P50X0402

C1000P50X0402

Close to ball

VCC_DDR

C230

C230
C0.1U25Y

C0.1U25Y

C1000P50X0402

C1000P50X0402

C304

C304

C1U16Y

C1U16Y

C519

C519
C0.1U25Y

C0.1U25Y

C134 C0.1U16Y0402C134 C0.1U16Y0402
C94 C0.1U16Y0402C94 C0.1U16Y0402

C133 C1000P50X0402C133 C1000P50X0402
C89 C1000P50X0402C89 C1000P50X0402

C121 C0.1U16Y0402C121 C0.1U16Y0402

C118 C1000P50X0402C118 C1000P50X0402
C85 C1000P50X0402C85 C1000P50X0402

NEAR DIMM

VCC_DDR

E

C161 C0.1U16Y0402C161 C0.1U16Y0402
C153 C0.1U16Y0402C153 C0.1U16Y0402
C160 C1000P50X0402C160 C1000P50X0402
C145 C1U16YC145 C1U16Y
C136 C1U16YC136 C1U16YC129 C0.1U16Y0402C129 C0.1U16Y0402

1 1

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Title

Title

Title

P4M900-2(MEM)

P4M900-2(MEM)

P4M900-2(MEM)

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

A

B

C

D

http://www.msi.com.tw

MS-7255

MS-7255

MS-7255

E

Last Revision Date:

Last Revision Date:

Last Revision Date:

Monday, December 18, 2006

Monday, December 18, 2006

Monday, December 18, 2006

Sheet

Sheet

Sheet

Rev

Rev

Rev

2.2

2.2

2.2

of

of

of

932

932

932

4

VCC3

W13

Y13

AA13

AB13

AC13

AJ1

AJ2

AJ3

AJ4

AJ5

VCC33PEX

VCC33PEX

VCC33PEX

GND

M2

L33

VCC33PEX

VCC33PEX

VCC33PEX

VCC33PEX

GNDM5GNDM7GND

GNDN2GNDN5GNDN7GNDP2GNDP7GND

M36

AJ6

AJ7

AK1

VCC33PEX

VCC33PEX

VCC33PEX

AK3

AK4

AK2

AK5

AK6

AK7

VCC33PEX

VCC33PEX

VCC33PEX

VCC33PEX

VCC33PEX

VCC33PEX

VCC33PEX

PEXRX00+/DVP0D11

PEXRX00-/DVP0D10

PEXRX01+/DVP0D09

PEXRX01-/DVP0D08

PEXRX02+/DVP0D07

PEXRX02-/DVP0D06

PEXRX03+/DVP0CLK

PEXRX03-/DVPTVCLKR

PEXRX04+/DVP0D05

PEXRX04-/DVP0D04

PEXRX05+/DVP0D03

PEXRX05-/DVP0D02

PEXRX06+/DVP0D01

PEXRX06-/DVP0D00
PEXRX07+/DVP0DE

PEXRX07-/DVP0HS

PEXRX08+/DVP1D11

PEXRX08-/DVP1D10

PEXRX09+/DVP1D09

PEXRX09-/DVP1D08

PEXRX10+/DVP1D07

PEXRX10-/DVP1D06

PEXRX11+/DVP1CLK

PEXRX11-/DVP1D05

PEXRX12+/DVP1D04

PEXRX12-/DVP1D03

PEXRX13+/DVP1D02

PEXRX13-/DVP1D01

PEXRX14+/DVP1D00

PEXRX14-/DVP1DE

PEXRX15+/DVP1HS

PEXRX15-/DVP1VS

GND

GND

GND

GNDP5GND

P6

P14

P15

P16

P17

PEXTX00+

PEXTX00-

PEXTX01+

PEXTX01-

PEXTX02+

PEXTX02-

PEXTX03+

PEXTX03-

PEXTX04+

PEXTX04-

PEXTX05+

PEXTX05-

PEXTX06+

PEXTX06-

PEXTX07+

PEXTX07-

PEXTX08+

PEXTX08-

PEXTX09+

PEXTX09-

PEXTX10+

PEXTX10-

PEXTX11+

PEXTX11-

PEXTX12+

PEXTX12-

PEXTX13+

PEXTX13-

PEXTX14+

PEXTX14-

PEXTX15+

PEXTX15-

PEXTX16+

PEXTX16-

PEXRX16+

PEXRX16-

PEXCLK+

PEXCLK-

INTR#

PEXDET
PEXWAKE#
PEXHPSCI#

PEXPMESCI#

TCSEN#
PEXCOMP0
PEXCOMP1

PEXREXT0
PEXREXT1

PEXCOMP2

PEXREXT2

GND

GND

GND

P18

P19

P20

B1
C1
D1
E1
H1
J1
K1
L1
L4
M4
M1
N1
N4
P4
P1
R1
T1
U1
U4
V4
V1
W1
W4
Y4
Y1
AA1
AB1
AC1
AC4
AD4
AD1
AE1

E3
D2
F3
G3
H3
J3
K3
L3
K6
L6
M3
N3
M6
N6
P3
R3
T3
U3
T6
U6
V3
W3
W6
V6
Y3
AA3
AA6
AB6
AB3
AC3
AD3
AE3

AG1
AF1

AF4
AE4

AG6
AF6

B6
B5
AC34
AC36
AC33
D7
H5
AD7
G5
AD6
AH1
AH2

PEDET

TCSEN#
PE0RCOMP0
PE0RCOMP1
PE0REXT0
PE0REXT1
PE1RCOMP
PE1REXT

T13

U13

V13

R13

N13

N14

P13

U9C

U9C

NVLAD0
NVLAD1
NVLAD2
NVLAD3
NVLAD4
NVLAD5
NVLAD6
NVLAD7

VBE0

UPSTB

UPSTB#

DNSTB

DNSTB#
UPCMD

DNCMD

LVREF_NB

LCOMPP

LCOMPN

TESTIN_NB

AD13
AD14
AD15

AA12
AB12
AB25
AC12
AC25
AD12

AD31
AD35

AE36
AD36
AD34

AC31
AD30

AC32
AD29

AP1
AN3

AT3
AR4
AN2
AN1
AP5
AN5

AN4

AT2
AR3

AR1

AT1
AR5

AP4

AL6
AM5

AL5

AL4

M12
M13
M14
M15
M16
M20
M21
M22
M23
M24

N12

N25

P12

P25

R12

T12

T25

U12

U25

V12
W12
W25

Y12

Y25

G6
AE6
AH5
AH3

AF7

AE7
AH6
AH4

H6

VD00
VD01

VCC33PEX

VD02
VD03
VD04
VD05
VD06
VD07

VBE#

UPSTB+
UPSTB-

DNSTB+
DNSTB-

UPCMD
DNCMD

VLVREF
VLCOMPP
VLCOMPN

VCLK
VCC15VL

VCC15VL
VCC15VL
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15
VCC15

VSUS15
SUSST#

TESTIN#
RESET#
PWROK

VCCA33HCK
VCCA33MCK

VCCA33PEX0
VCCA33PEX1
VCCA33PEXCK
VCCA33PEX2
VSUS15PEX

GNDAHCK
GNDAMCK
GNDAPEX0
GNDAPEX1
GNDAPEXCK
GNDAPEX2

GND

GND

K4

K2

VCC33PEX

VCC33PEX

GNDK5GNDK7GND

K31

VCC33PEX

VCC33PEX

VCC33PEX

VCC33PEX

VCC33PEX

VCC33PEX

P4M900

P4M900

GND

GND

GNDL2GNDL7GND

GNDL5GND

L32

K34

K36

VLAD014
VLAD114

UPSTB14

UPSTB#14

DNSTB14

DNSTB#14
UPCMD14

DNCMD14

R227 270R1%/4R227 270R1%/4

R225 340R1%/4R225 340R1%/4

GCLK_NB15

+1.5VSUS

PCIRST#121,24,28

PWROK_NB13

+1.5VSUS

VLAD214
VLAD314
VLAD414
VLAD514
VLAD614
VLAD714

VBE014

SUSST13

1.5V

VCCA33HCK
VCCA33MCK

VCCA33PE00
VCCA33PE01
VCCA33PE
VCCA33PE1

5 5

1.5V

4 4

3 3

2 2

3

PE0TX0+ 17
PE0TX0- 17
PE0TX1+ 17
PE0TX1- 17
PE0TX2+ 17
PE0TX2- 17
PE0TX3+ 17
PE0TX3- 17
PE0TX4+ 17
PE0TX4- 17
PE0TX5+ 17
PE0TX5- 17
PE0TX6+ 17
PE0TX6- 17
PE0TX7+ 17
PE0TX7- 17
PE0TX8+ 17
PE0TX8- 17
PE0TX9+ 17
PE0TX9- 17
PE0TX10+ 17
PE0TX10- 17
PE0TX11+ 17
PE0TX11- 17
PE0TX12+ 17
PE0TX12- 17
PE0TX13+ 17
PE0TX13- 17
PE0TX14+ 17
PE0TX14- 17
PE0TX15+ 17
PE0TX15- 17

PE0RX0+ 17
PE0RX0- 17
PE0RX1+ 17
PE0RX1- 17
PE0RX2+ 17
PE0RX2- 17
PE0RX3+ 17
PE0RX3- 17
PE0RX4+ 17
PE0RX4- 17
PE0RX5+ 17
PE0RX5- 17
PE0RX6+ 17
PE0RX6- 17
PE0RX7+ 17
PE0RX7- 17
PE0RX8+ 17
PE0RX8- 17
PE0RX9+ 17
PE0RX9- 17
PE0RX10+ 17
PE0RX10- 17
PE0RX11+ 17
PE0RX11- 17
PE0RX12+ 17
PE0RX12- 17
PE0RX13+ 17
PE0RX13- 17
PE0RX14+ 17
PE0RX14- 17
PE0RX15+ 17
PE0RX15- 17

PETP1 17
PETN1 17

PERP1 17
PERN1 17

PECLK_NB 15
PECLK_NB# 15

PIRQ#H 12
PEWAKE# 13,17

PEHPSCI 13,14
PEPMESCI 13

VCC3

X_120L600m_250

X_120L600m_250

VCC3

X_120L600m_250

X_120L600m_250

R226 249R1%0402R226 249R1%0402
R229 249R1%0402R229 249R1%0402
R222 10.7KR1%0402R222 10.7KR1%0402
R228 10.7KR1%0402R228 10.7KR1%0402
R231 249R1%0402R231 249R1%0402
R230 10.7KR1%0402R230 10.7KR1%0402

FB16

FB16

CP25 X_COPPERCP25 X_COPPER

C240

C240

FB15

FB15

CP24 X_COPPERCP24 X_COPPER

C241

C241

TCSEN#

C22U6.3X1206

C22U6.3X1206

C22U6.3X1206

C22U6.3X1206

PEDET

VCCA33PE

C237

C237

C1000P50X0402

C1000P50X0402

VCCA33PE1

C235

C235

C1000P50X0402

C1000P50X0402

R223 4.7KR0402R223 4.7KR0402

R224 4.7KR0402R224 4.7KR0402

C232

C232

C0.1U16Y0402

C0.1U16Y0402

C236

C236

C0.1U16Y0402

C0.1U16Y0402

1.5V

C219 C0.1U16Y0402C219 C0.1U16Y0402
C211 C0.1U16Y0402C211 C0.1U16Y0402
C222 C0.1U16Y0402C222 C0.1U16Y0402
C220 C0.1U16Y0402C220 C0.1U16Y0402
C210 C0.1U16Y0402C210 C0.1U16Y0402

Decoupling capacitors

VCC3

VCC3

X_120L600m_250

X_120L600m_250

X_120L600m_250

X_120L600m_250

1.5V

VCC3

FB14

FB14

CP23 X_COPPERCP23 X_COPPER

C229

C229

C22U6.3X1206

C22U6.3X1206

VCC3

FB17

FB17

CP26 X_COPPERCP26 X_COPPER

C242

C242

C22U6.3X1206

C22U6.3X1206

R233

R233

1.87KR1%0402

1.87KR1%0402

LVREF_NB

R234

R234

1.2KR1%0402

1.2KR1%0402

VCCA33PE00

C223

C223

C1000P50X0402

C1000P50X0402

VCCA33PE01

C245

C245

C1000P50X0402

C1000P50X0402

C228

C228

C0.1U16Y0402

C0.1U16Y0402

2

C221

C221

C239

C239

C0.1U16Y0402

C0.1U16Y0402

TESTIN_NB

C0.1U16Y0402

C0.1U16Y0402

VCC3

X_120L600m_250

X_120L600m_250

FB8

FB8

CP16 X_COPPERCP16 X_COPPER

C155

C155

C259

C259

C1U16Y

C1U16Y

VCCA33HCK

C143

C143

FOR P4M890

R187 X_1KR0402R187 X_1KR0402

VCCA33HCK

C1000P50X0402

C1000P50X0402

CP28

CP28
X_COPPER

X_COPPER

VCCA33MCK

C1000P50X0402

C1000P50X0402

C152

C152

C1U16Y

C1U16Y

C140

C140

C1U16Y

C1U16Y

VCC_DDR

1.5V

C532 C4.7U10Y0805C532 C4.7U10Y0805
C535 C4.7U10Y0805C535 C4.7U10Y0805

C534 C4.7U10Y0805C534 C4.7U10Y0805
C525 C4.7U10Y0805C525 C4.7U10Y0805
C531 C4.7U10Y0805C531 C4.7U10Y0805
C536 C4.7U10Y0805C536 C4.7U10Y0805

C537 C2.2U6.3X5C537 C2.2U6.3X5
C533 C2.2U6.3X5C533 C2.2U6.3X5

C528 C2.2U6.3X5C528 C2.2U6.3X5
C530 C2.2U6.3X5C530 C2.2U6.3X5

under NB( solder side)

VCC5

U23

U23
X_LT1087S_SOT89

X_LT1087S_SOT89

VIN3VOUT

1

1

VCCA33HCK

2

ADJ

R423

R423
X_164R1%0402

X_164R1%0402

R424

R424
X_100R1%0402

X_100R1%0402

LVREF_NB => 0.625V

1 1

Micro Star Restricted Secret

Micro Star Restricted Secret

Micro Star Restricted Secret

Title

Title

Title

P4M900-3(GFX)

P4M900-3(GFX)

P4M900-3(GFX)

Document Number

Document Number

Document Number

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

MICRO-STAR INT'L CO.,LTD.

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,

No. 69, Li-De St, Jung-He City,
Taipei Hsien, Taiwan

Taipei Hsien, Taiwan

Taipei Hsien, Taiwan
http://www.msi.com.tw

http://www.msi.com.tw

4

3

2

http://www.msi.com.tw

MS-7255

MS-7255

MS-7255

Last Revision Date:

Last Revision Date:

Last Revision Date:

Thursday, December 21, 2006

Thursday, December 21, 2006

Thursday, December 21, 2006

Sheet

Sheet

1

Sheet

of

of

of

10 32

10 32

10 32

Rev

Rev

Rev

2.2

2.2

2.2