82801BA Datasheet, PDF (4/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

Intel^® 82801BA (ICH2) and 82801BAM (ICH2-M) Simplified Block Diagram
AD[31:0]
C/BE[3:0]#
DEVSEL#
FRAME#
IRDY#
TRDY#
STOP#
PAR
PERR#
REQ[0:4]#
REQ5#/REQB#/GPIO1
REQA#/GPIO0
GNT[0:4]#
GNT5#/GNTB#/GPIO17
GNTA#/GPIO16
PCICLK
PCIRST#
PLOCK#
SERR#
PME#
(ICH2-M)CLKRUN#
A20M#
CPUSLP#
FERR#
IGNNE#
INIT#
INTR
NMI
SMI#
STPCLK#
RCIN#
A20GATE
CPUPWRGD
SERIRQ
PIRQ[A:D]#
PIRQ[H:E]/GPIO[5:2]
IRQ[14:15]
APICCLK
APICD[1:0]
USBP1P
USBP1N
USBP0P
USBP0N
OC[3:0]#
RTCX1
RTCX2
CLK14
CLK48
CLK66
SPKR
RTCRST#
(ICH2) TP0
FS0
GPIO[13:11,8:6,4:3,1:0]
GPIO[23:16]
GPIO[28:24]
PCI
Interface
Processor
Interface
Interrupt
USB
RTC
Clocks
Misc.
Signals
General
Purpose
I/O
IDE
Interface
Power
Mgnt.
AC'97
Link
Hub
Interface
Firmware
Hub
LPC
Interface
SMBus
Interface
System
Mgnt.
PDCS1#
SDCS1#
PDCS3#
SDCS3#
PDA[2:0]
SDA[2:0]
PDD[15:0]
SDD[15:0]
PDDREQ
SDDREQ
PDDACK#
SDDACK#
PDIOR#
SDIOR#
PDIOW#
SDIOW#
PIORDY
SIORDY
THRM#
SLP_S3
SLP_S5#
PWROK
PWRBTN#
RI#
RSMRST#
SUS_STAT#/LPCPD#
SUSCLK
RSM_PWROK (ICH2) or LAN_PWROK (ICH2-M)
VRMPWRGD / VGATE (ICH2-M)
SLP_S1# (ICH2-M)
C3_STAT#/GPIO[21] (ICH2-M)
AGPBUSY# (ICH2-M)
STP_PCI# (ICH2-M)
STP_CPU# (ICH2-M)
BATLOW# (ICH2-M)
CPUPERF# (ICH2-M)
SSMUXSEL (ICH2-M)
AC_RST#
AC_SYNC
AC_BIT_CLK
AC_SDOUT
AC_SDIN0
AC_SDIN1
HL11:0]
HL_STB
HL_STB#
HLCOMP
FWH[3:0]/LAD[3:0]
FWH[4]/LFRAME#
LAD[3:0]/FWH[4]
LFRAME#/FWH[4]
LDRQ[0:1]#
SMBDATA
SMBCLK
SMBALERT#/GPIO[11]
INTRUDER#
SMLINK[1:0]
EE_SHCLK
EE_DIN
EE_DOUT
EE_CS
System
Mgnt.
System
Mgnt.
LAN_CLK
LAN_RXD[2:0]
LAN_TXD[2:0]
LAN_RSTSYNC
Note:
1. The GPIO signals listed above represent the GPIO signals for the 82801BA ICH2. Some of
these signals are not implemented in the 82801BAM ICH2-M. See Signal Description Chapter for details.
blk_ich2-ich2m
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82801BA ICH2 and 82801BAM ICH2-M Datasheet