82801DB Datasheet, PDF (523/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

Electrical Characteristics
Table 17-4. DC Characteristic Output Signal Association
Symbol
Associated Signals
V_OH1/V_OL1
V_OH2/V_OL2
IDE Signals: PDD[15:0], SDD[15:0], PDIOW#/PDSTOP, SDIOW#/SDSTOP, PDIOR#/
PDWSTB/PRDMARDY, SDIOR#/STWSTB/SRDMARDY, PDDACK#, SDDACK#, PDA[2:0],
SDA[2:0], PDCS[3,1]#, SDCS[3,1]#
CPU Signals: A20M#, CPUPWRGD⁽¹⁾, CPUSLP#, IGNNE#, INIT#, INTR, NMI, SMI#,
STPCLK#
V_OH3/V_OL3
V_OH4/V_OL4
V_OL5/V_OH5
EEPROM Signals: EE_CS, EE_DOUT, EE_SHCLK
PCI Signals: GNT5#/GNTB#/GPIO17, GNTA#/GPIO16, AD[31:0], C/BE[3:0]#, PCIRST#,
GNT[4:0]#, PAR, DEVSEL#, PERR#, PLOCK#, STOP#, TRDY#, IRDY#, FRAME#, SERR# ⁽¹⁾
LPC/FWH Signals: LAD[3:0]/FWH[3:0], LFRAME#/FWH[4]
AC ’97 Signals: AC_RST#, AC_SDOUT, AC_SYNC
LAN Signals: LAN_RSTSYNC, LAN_TXD[2:0]
SMBus Signals: SMBCLK ⁽¹⁾, SMBDATA ⁽¹⁾
System Management Signals: SMLINK[1:0]⁽¹⁾
V_OL6/V_OH6
Power Management Signals:
SLP_S3#, SLP_S4#, SLP_S5#, SUS_STAT#, SUSCLK
GPIO Signals: GPIO[43:32, 28:27, 25:22, 21:18];
Interrupt Signals: SERIRQ, PIRQ[D:A]# ⁽¹⁾, PIRQ[H:E]#/GPIO[5:2]⁽¹⁾
Other Signals: SPKR
V_OL7/V_OH7
V_OL8/V_OH8
Zpd/Zpu
V_OL9/V_OH9
VHSOI
VHSOH
VHSOL
VCHIRPJ
VCHIRPK
USB Signals: USBP[5:0][P,N] in Low and Full Speed Modes
Hub Interface Signals: HI[11:0], HI_STB / HI_STBS, HI_STB# / HI_STBF
Interrupt Signals: APICD[1:0] ⁽¹⁾
USB Signals: USBP[5:0][P:N] in High Speed Modes
NOTE: 1. These signals are open drain.
Intel^® 82801DB ICH4 Datasheet
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