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1、5 5 4 4 3 3 2 2 1 1 DD CC BB AA AGP4X ,66MHz ,32bit MDC CON. VGA ATI M10-P PSB LPC, 33MHz , 4 bit MINI PCI Hub Interface 66MHz , 266MB/s (HI 1.0) RJ11 LCD Header DDR VR 33MHz PCI , 32bit ATA100 , 16bit ICH4-M 421BGA 478 uFCPGA Clock generator WIRELESS LAN 802.11b System DC/DC AC97 12.288MHz Pentium
2、M Processor 266 DDR SDRAM , 64bit Intel 855PM MCH 593 uFCBGA CPU Thermal Sensor IMVP IV VR BIOS 4Mbit ICS950812 BGA DDR CHANL A CRT Connector ( 2.5V ) Type-III R15B REV :A 400MHz , 64Bit 14.318MHz 8MHz M38857 FAN CON. SMC/KBC Scan KB LAN_PHY 82562EM CAVCC POWER SWITCH CAVPP R5532V CARDBUS 24.576MHz
3、R5C551 1394 CON. Type-II SLOT AC97 CODEC SIGMATEL TPA0202 AMP SPEAKERS LQFP48 ATAC9752 24.576MHz 25MHz 32.768KHz RJ45 DVD DDR PARALLEL TERMINATION SO DIMM 0 (9.2H) SO DIMM 1 (5.2H) INT MIC INT JACK LMV358 MIC AMP SPDIF JACK LINE OUT JACK HD ATA100 , 16bit ( 2.5V ) BGA DDR CHANL B 64bit64bit USB1 USB
4、2.0 USB0USB2 A Block Diagram B 156Monday, September 08, 2003 Title SizeDocument NumberRev Date:Sheetof 5 5 4 4 3 3 2 2 1 1 DD CC BB AA SCHEMATIC ANNOTATIONS AND BOARD INFORMATION PCI Devices Page 3 CPU Page 4 CPU_POWER Page 5 CPU_THERMAL Page 6 855 PM MCH-1 Page 7 855 PM MCH-2 Page 8 855 PM _POWER P
5、age 9 DDR SO-DIMM Page 10 DDR termination-S Voltage Rails (SYSTEM) +VDC Primary DC system power supply(10 to 21V) +VCC_CORE Core voltage for processor +VCCP 1.05V rail for processor I/O +V1.2S_MCH 1.2V for 855PM CORE(off in S3-S5) +V1.25S DDR Termination voltage (off in S3-S5) +V1.5S 1.5V switched p
6、ower rail (off in S3-S5) +V1.5ALWAYS 1.5V always on power rail +V1.5 1.5V power rail(off in S4-S5) +V1.8S 1.8V switched power rail (off in S3-S5) +V2.5 2.5V power rail for DDR +V3.3ALWAYS 3.3V always on power rail +V3.3 3.3V power rail(off in S4-S5) +V3.3S 3.3V switched power rail(off in S3-S5) +V5_
7、ALWAYS 5.0V always on power rail +V5 5.0V power rail(off in S4-S5) +V5S 5.0V switched power rail(off in S3-S5) +V12S 12.0V switched power rail(off in S3-S5) Page 48 POWER_2.5V Page 49 POWER_1.8V /AGP CORE Page 50 POWER 855 PM VR If this pin or RST# pin is driven low, identical operation is exhibited
8、. A Software Debug Port & BIOS B 3056Monday, September 08, 2003 Title SizeDocument NumberRev Date:Sheetof EXTMS_CLK EXTKB_DATA EXTKB_CLK EXTMS_DATA PCI_RST# LPC_FRAME# LPC_AD2 LPC_AD3 LPC_AD0 LPC_AD1 LPC_AD3 LPC_AD2 LPC_AD1 LPC_FRAME# LPC_INIT# PCI_RST# LPC_AD0 +V3.3S9,13,14,16,22,23,24,25,26,27,28,
9、29,31,34,35,37,38,41,42,44,45,46,49,54,55 +V3.3ALWAYS25,26,27,28,29,44,46,47,52,54,55 +V5S22,23,28,34,36,41,42,44,45,54,55 +V5S22,23,28,34,36,41,42,44,45,54,55 +V3.35,25,26,28,29,31,33,36,37,38,39,40,41,46,54,55 +V529,31,32,40,41,54,55 +V3.3S9,13,14,16,22,23,24,25,26,27,28,29,31,34,35,37,38,41,42,44
10、,45,46,49,54,55 TP44 TP42 CON7 HEADER 20_OP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 R26633 0603R RN19 4.7KX4 8P4R 18 27 36 45 U19 BIOS PLCC32_SOCKET 12 11 10 9 8 7 6 5 27 26 23 25 4 28 29 13 14 15 17 18 19 20 21 3 2 16 1 32 30
11、 31 24 22 ID0 ID1 ID2 ID3 TBL# WP# GPI0 GPI1 NC4 NC3 LFRAME# VCC1 GPI2 CE# MODE LAD0 LAD1 LAD2 LAD3 RES4 RES3 RES2 RES1 GPI3 RST# GND NC1 VCC2 GPI4 LCLK INIT# NC2 C336 0.1U 0603C C337 22P 0603CJP3 PS/2_KB_MS_OP C73156-6P 3 1 5 4 2 6 7 8 R2961000603R R276 100K 0603R TP43 R6650_OP 0603R R265 100K 0603
12、R R264 100K 0603R R279 100K 0603R TP41 R292 100K 0603R C452 1U 0603C CON5 HDR_CON_OP SM04B_SRSS 1 2 3 4 1 2 3 4 R6640_OP 0603R C450 0.1U 0603C R2951000603R R280 100 0603R PM_PWRBTN#27,29,44,46 EXTKB_DATA29 EXTMS_DATA29 EXTMS_CLK29 EXTKB_CLK29 INT_SERIRQ25,26,29,38 48M_SIO13 PCLK_SIO13 FWH_TBL#27 FWH
13、_WP#27 PCI_RST#6,14,26,29,34,38,41 FWH_INIT#26 LPC_AD227,29 LPC_AD027,29 LPC_AD327,29 LPC_AD127,29 CLK_FWHPCI13 LPC_FRAME#27,29 5 5 4 4 3 3 2 2 1 1 DD CC BB AA BAT_ON AC_ON Sink 12mA Sink 12mA Sink 12mA Green : when system is fully charged Orange: when battery Charging ON : AC Power In FLASH : STR O
14、N : Battery Power FLASH : STR G_LED R_LED CHG_5V BAT_IN# CHG_ACT# (AC POWER IN) (BATTERY PLUG IN) 1 1 1 00 0 ONON ONOFF OFF OFF X X X FULLY CHARGED BATTERY CHARGING A DISPLAY_LED B 3156Monday, September 08, 2003 Title SizeDocument NumberRev Date:Sheetof ACLED_IN ACIN# ACIN# LED_BLINK LED_BLINK CHG_5
15、V47 +V3.35,25,26,28,29,30,33,36,37,38,39,40,41,46,54,55 +V3.35,25,26,28,29,30,33,36,37,38,39,40,41,46,54,55 +V3.35,25,26,28,29,30,33,36,37,38,39,40,41,46,54,55 +V529,30,32,40,41,54,55 +V3.3S9,13,14,16,22,23,24,25,26,27,28,29,30,34,35,37,38,41,42,44,45,46,49,54,55 +V529,30,32,40,41,54,55 CHG_5V47 +V3
16、.35,25,26,28,29,30,33,36,37,38,39,40,41,46,54,55 U31C 74AHCT00 TSSOP14 8 9 10 U32A 74AHC00 TSSOP14 1 2 3 147 U31B 74AHCT00 TSSOP14 4 5 6 Q75 2N7002 SST3_GDS R701 10K 0603R R379 100K 0603R R1270 0603R Q74 TP0610 SST3_GDS R702 750K_1% 0603R C794 1U 0805C LED4 CAPS_LED U32B74AHC00 TSSOP14 4 5 6 R391270 0603R D36 BAT54 SST3_ACN U32C74AHC00 TSSOP14 9 10 8 LED5 CAPS_LED R703 100K 0603R U32D74AHC00 TSSOP14 1
