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Block Diagram
2.0 - February 2005 - Confidential
CPU MODULE BASE BOARD
IDE 1
LVL
XLATE IDE 0
VCOREALWAYS
VBAT RTC
RS232 COM
V3VALWAYS
BAT
XCVRs 3&4
ISA
VCORE
PWRBTN#
VCC3V
SIO FDD
IDE
(7)
(FDC37C669)
LPC
VSBL
VSB
VCORE
VIO
HDR (1) LPT
POWER PORT
80
LPC-ISA
LEDs
BRIDGE
(W83626F) ISA x3 (8)
FDD
LPT / FDD (2)
LPC
SIO PS/2 PS/2 PS/2
(IT8761E) KYBD MS
COM COM1
RS232
XCVR COM
RX / TX ONLY COM2 RS232 1&2
XCVR
ARB
PCI
SC1200
SC1100
PCI x4
(9)
LAN
(RTL8100C) LAN
or
OVCR
PWR USB
1&2
ETX CONNECTOR(S)
DEMUX/ BIOS USB
TERMS 3&4
Sub-ISA
HDR (1)
(3) CRT
AC97 LINE OUT
CODEC
PCBEEP LINE IN
(ALC203)
MIC
SPKR AMP AMP OUT
IrDA
HDR
SC1200 ONLY (3) TV
OUT
VOP /
GPIOW GPIOW1
TFT LVDS (3)
LCD
VIP HDR (3) (90CF365)
HDR (3)
(6)
GPIO20 DDC I2C
SPD MUX I2C EEPROM
(3,5)
AB2 SMB I2C
PWRCNT2 MONITOR
ONCTL# EEPROM TEMP AT
(AT24C01) (LM92) PS_ON SUPPLY LEGEND
STR (4) AMD
SUPPORT COMPONENT
VCC-MEM 5VAUX
ATX CONNECTOR
(LM2653)
SODIMM V3VALWAYS SUPPLY
(SC1200 - LP2951
NOTES:
SC1100 - LM2653) (1) LPC & Sub-ISA are combined
VCOREALWAYS on one header
(LP2951) (2) Only floppy supported
5V_ATX
(3) SC1200 ONLY
VCC3V (4) Not Supported (5VAUX needed
VCORE & (LTC3412) for STR)
PWRGD
VCOREALWAYS
VCORE (5) Mux needed for DDC / PD conflict.
SC1100 = 2.0V (6) Not installed
SC1200 = 1.8V (LM2653)
(7) Not supported
(8) DMA not supported
PWROK RESET
POR# (9) VCC3V - SC1200
(LM3704)
V3VALWAYS - SC1100
AMD GeodeTM DBSC1200/DBSC1100 Development Board Block Diagram 1