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8 7 6 5 4 3 2 1
Last Schematic Update Date: Cover Sheet 1
04/26/2002 Block Diagram 2
MAIN CLOCK GEN 3
D D
DDR CLOCK BUFFER 4
MS-6581 VERSION:0.A mPGA478-B INTEL CPU Sockets
SIS 645 NORTH BRIDGE
5-6
7- 10
SIS 645 CHIPSET
Willamette/Northwood 478pin mPGA-B Processor Schematics DDR SLOT 11-12
DDR TERMINATOR 13
CPU:
SIS 962 SOUTH BRIDGE 14-17
Willamette/Northwood mPGA-478B Processor
AGP SLOT 18
System Brookdale Chipset: PCI SLOTS 19-21
SIS 645 (North Bridge) + IDE CONNECTOR 22
C
962 (South Bridge) USB CONNECTOR 23 C
On Board Chipset:
KB/MS CONNECTOR 24
LPC Super I/O -- W83697HF AC'97 CODEC 25
ETHERNET CONTROLLER--INTEL 82551QM AUDIO CONNECTOR 26
CNR CONNECTOR 27
LPC I/O(W83697HF) 28
Expansion Slots:
HARDWARE MONITOR 29
AGP2.0 SLOT * 1
PARALLEL PORT 30
PCI2.2 SLOT* 6
SERIAL PORT 31
CNR SLOT * 1
FLASH MEMORY 32
B B
VRM 9.X 33
VOLTAGE REGULATOR 34
ACPI CONTROL 35
ATX POWER CON 36
FRONT PANEL 37
Decoupling Capacitor 38
LAVON (1) 39
LAVON (2) 40
LAYOUT SCREW 41
A A
MICRO-STAR INT'L CO.,LTD.
Title
COVER PAGE
Size Document Number Rev
C MS-6581 0A
Date: , 18, 2002 Sheet 1 of 41
8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
System Block Diagram
D D
SOCKET-478
Host Bus
Support Dual Monitor
SSTL-2 Termination
VGA VGA SLOT DDR SDRAM (Only for DDR)
D-SUB
SIS645
DIMM 1 DIMM 2 DIMM 3 Rtt
C VGA Connector VGA CONNECTOR VGA C
INTEL
82551
HyperZip
Support Max to six-PCI Devices
512 MB
Analog In
AC'97
Audio Codec
PCI SLOT 6 PCI SLOT 5 PCI SLOT 4 PCI SLOT 3 PCI SLOT 2 PCI SLOT 1 Analog Out
SiS962 ACR
IDE 1 IDE 2
KEYBOARD PS/2
/MOUSE
B USB 3 USB 0 B
USB 2 USB 1
LPC Bus USB 4
USB 5
FAN FAN FAN CONTROL VOLTAGE MONITOR
1 2
TEMPERATURE MONITOR
LPC Super I/O
Legacy FAN CONTROL
ROM
A GPIOs IR/CIR GAME/MIDI SERIAL PARALLEL FLOPPY
A
MICRO-STAR INT'L CO.,LTD.
Title
System Block Diagram
Size Document Number Rev
B MS-6581 0A
Date: , 18, 2002 Sheet 2 of 41
8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
VCC3 Main Clock Generator
(3 OPTIONS)
1: (ICS)
2: (Cypress)
3. (Hitachi)
L21 CP25
X_COPPER By-Pass Capacitors
X_80-0805 Place near to the Clock Outputs
U11
D 952001AF
CPUCLK0 R242 49.9ST
D
1 CPUCLK-0 R243 49.9ST
VDDREF Damping Resistors
11 VDDZ
13 Place near to the CPUCLK1 R240 49.9ST
VDDPCI Clock Outputs CPUCLK-1 R241
19 49.9ST
VDDPCI
28 VDD48
+ CE7 CB188 CB187 CB204 CB189 29 R261 33 CPUCLK0
CPUCLK0 5
X_22u 0.1u 0.1u 0.1u CB190 CB2070.1u CB192 CB208 VDDAGP R262 CPUCLK-0 SDCLK C173 10p
42 33 CPUCLK-0 5
0.1u 0.1u 0.1u 0.1u VDDCPU
48 VDDSD CPUCLK0 40
39 R259 33 CPUCLK1
CPUCLK#0 CPUCLK1 7
12 R260 33 CPUCLK-1 AGPCLK0 C174 X_10p
PCI_STOP# CPUCLK-1 7
45 CPU_STOP# CPUCLK1 44
43 R258 22 SDCLK AGPCLK1 C175 X_10p
CPUCLK#1 SDCLK 8
R263 22 AGPCLK0
AGPCLK0 7
5 47 R264 22 AGPCLK1
VSSREF SDCLK AGPCLK1 18
8 ZCLK0 C221 X_10p
VSSZ R306 ZCLK0
18 31 22 ZCLK0 9
VSSPCI AGPCLK0 R307 ZCLK1 ZCLK1 C234 X_10p
24 30 22 ZCLK1 14
VSSPCI AGPCLK1
25 VSS48
32 9 LAN_CLK C232 X_10p
VSSAGP ZCLK0 RN73 7
41 VSSCPU ZCLK1 10 8 33 96XPCLK
96XPCLK 14
46 5 6 SIOPCLK CN9 10p
VSSSD SIOPCLK 28
14 FS3 3 4 PCICLK1 PCICLK2 1 2
PCICLK_F0/FS3 PCICLK1 19
VCC3 VCC3 15 FS4 1 2 PCICLK2 PCICLK1 3 4
PCICLK_F1/FS4 PCICLK2 20
16 7 8 PCICLK3 SIOPCLK 5 6
PCICLK0 PCICLK3 20
17 5 6 PCICLK4 96XPCLK 7 8
PCICLK1 PCICLK4 21
20 3 4 PCICLK5
PCICLK2 PCICLK5 21
R246 R245 21 1 2
10K 10K PCICLK3 RN74 33 PCICLK6 CN8 2 10p
C PCICLK4 22
23 R309 22 PCICLK6
PCICLK6 19
PCICLK5
1
3 4
C
PCICLK5 R310 LAN_CLK PCICLK4
22 LAN_CLK 39 5 6
33 2 FS0 PCICLK3 7 8
VCCP PD#/VTT_PWRGD REF0/FS0 FS1 RN72 7 33 REFCLK0
REF1/FS1 3 8 REFCLK0 9
R237 4 FS2 5 6 REFCLK1
REF2/FS2 REFCLK1 15
Q24 Q25 R244 475ST 38 3 4 APICCLK APICCLK C236 10p
IREF APICCLK 15
48M 27 1 2
10K NPN-3904LT1-S-SOT23 26
NPN-3904LT1-S-SOT23 24_48M/MULTISEL R315 REFCLK0 C227 10p
22 REFCLK2 25
R265 22 UCLK48M
UCLK48M 16
CP26 X_COPPER MULTISEL R266 22 SIO48M REFCLK1 C235 10p
SIO48M 28
SCLK 35
VCC3 34
SDATA REFCLK2 C233 10p
L23 SMBCLK
SMBCLK 4,11,12,15,27,35,40
36 SMBDAT
VDDA SMBDAT 4,11,12,15,27,35,40
X_80-0805 UCLK48M C176 10p
SIO48M C177 10p
CB203 CB195 CB191
X_0.1u 0.1u 100p
37 VSSA
VCC3 Frequency Selection
XOUT
XIN
BSEL0 5
B R302 2.7K FS0 B
6
7
VCC3 R308 X_2.7K FS1
Y2 R316 10K FS2
R290 X_2.7K FS3
R317 2.7K R318 10K FS4
14M-32pf-HC49S-D
+ CE6
CB214 CB193 C205 C196
22p 22p
X_22u 0.1u 100p MULTISEL R247 X_0 VCC3 VCC3
R267 X_4.7K
VCC3
C214 C292
C273
1000p 1000p
1000p
SIS650 CLOCK SIS650 CLOCK
FS4 FS3 FS2 FS1 FS0 CPU SDRAM ZCLK AGPCLK PCI FS4 FS3 FS2 FS1 FS0 CPU SDRAM ZCLK AGPCLK PCI
(MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz) (MHz)
0 0 0 0 0 1 0 0 0 0
0 0 0 0 1 1 0 0 0 1 VCC5
0 0 0 1 0 1 0 0 1 0
0 0 0 1 1 1 0 0 1 1
0 0 1 0 0 1 0 1 0 0
0 0 1 0 1 1 0 1 0 1
0 0 1 1 0 1 0 1 1 0
A 0
0
0
1
1
0
1
0
1
0
1
1
0
1
1
0
1
0
1
0
A
0 1 0 0 1 1 1 0 0 1
0 1 0 1 0 1 1 0 1 0
0 1 0 1 1 1 1 0 1 1 MICRO-STAR INT'L CO.,LTD.
0 1 1 0 0 1 1 1 0 0
0 1 1 0 1 1 1 1 0 1
0 1 1 1 0 1 1 1 1 0 Title
0 1 1 1 1 1 1 1 1 1 MAIN CLOCK GEN
Size Document Number Rev
B MS-6581 0A
Date: , 18, 2002 Sheet 3 of 41
8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
Clock Buffer (DDR)
D (OPTIONS)
D
1: (ICS-93705)
CP7 X_COPPER
VCC2.5V
L10
CBVDD
X_80-0805
By-Pass Capacitors
Place near to the Clock Buffer
CB137 CB138 CE4 CB101 CB100 CB115 CB128 CB114
0.01u 0.1u 0.1u 0.1u 0.1u 0.1u
0.1u 10u-0805 DDRCLK0 C81 X_10p
DDRCLK1 C83 X_10p
DDRCLK[0..8]
DDRCLK[0..8] 11,12
DDRCLK2 C86 X_10p
DDRCLK-[0..8]
DDRCLK-[0..8] 11,12
DDRCLK3 C88 X_10p
SMBCLK
SMBCLK 3,11,12,15,27,35,40
SMBDAT DDRCLK5 C89 X_10p
SMBDAT 3,11,12,15,27,35,40
U3 FWDSDCLKO DDRCLK4 C62 X_10p
FWDSDCLKO 8
93705CF
DDRCLK8 C63 X_10p
C CBVDD 15
C
VDDI2C DDRCLK7 C66 X_10p
4 VDD
11 VDD
21 DDRCLK6 C70 X_10p
VDD
28 VDD
34 VDD
CP9 X_COPPER 38 VDD R110 DDRCLK0 DDRCLK-0 C80 X_10p
45 3 0
VDD CLK0 R111 DDRCLK1
5 0
CLK1 R114 DDRCLK2 DDRCLK-1 C84 X_10p
10 0
CLK2 R117 DDRCLK3
20 0
L12 CLK3 R118 DDRCLK5 DDRCLK-2 C85 X_10p
16 22 0
VCC2.5V X_80-0805 AVDD CLK4 R78 DDRCLK4
46 0
CE3 CB129 CB130 CLK5 R79 DDRCLK8 DDRCLK-3 C87 X_10p
44 0