Table of Contents
Advertisement
3.7
82371EB (PIIX4E)
3.7.1
PIIX4E Connections
Table 3-7. PIIX4E Connectivity (Sheet 1 of 4)
Signal Names
48MHz
A20GATE
A20M#
AD[31:0]
AEN
APICACK# / GPO12
APICCS# / GPO13
APICREQ# / GPO15
BALE
BATLOW# / GPI9
BIOSCS#
C/BE#[3:0]
CLOCKRUN#
CONFIG1
CONFIG2
CPURST
CPU_STP# / GPO17
DACK#[7:0]
DEVSEL#
DREQ[7:0]
EXTSMI#
FERR#
FRAME#
GNT[C:A]# / GPO[11:9]
GPI1
GPI[x:y] (Unused)
GPO[x:y] (Unused)
IDSEL
IGNNE#
INIT#
INTR
®
Intel
440GX AGPset Design Guide
Connect to CK100 through a 22 ohm series resistor.
Connected to SIO. 8.2K ohm pull-up to VCC3.
Part of CPU/bus frequency circuit. 2.7K ohm pull-up to VCC3.
Connect to PCI slots and 82443GX.
Connect to SIO and ISA slots.
UP: Leave as a NC. DP: Connect to IOAPIC.
UP: Leave as a NC. DP: Connected to IOAPIC. 8.2K ohm pull-up to VCC3.
8.2K ohm pull-up to VCC3. DP: Connected to IOAPIC.
Connect to ISA slots.
8.2K ohm pull-up to 3VSB if BATLOW# is not used.
Connect to Flash.
Connect to PCI slots and 82443GX.
100 ohm pull-down.
8.2K ohm pull-up to 3VSB.
8.2K ohm pull-down.
Leave as a NC.
No connect, or connected to CK100 with 10K ohm pull-up to 3VSB.
Connect to ISA slots. DACK#[3:0] also connect to SIO.
2.7K ohm pull-up to 5V or 10K ohm pull-up to 3V. Connect between 82443GX,
PCI slots, and PIIX4E.
Connected to ISA slots. 5.6K ohm pull-down.
Connected to LM79. 8.2K ohm pull-up to 3VSB.
Connect between CPUs. 220 ohm pull-up to 2.5V.
2.7K ohm pull-up to 5V or 10K ohm pull-up to 3V. Connect between 82443GX,
PCI slots, and PIIX4E.
No connect.
Used as PCI_PME. 8.2K ohm pull-up to 3VSB. Pull-up to 3VSB is also required
when not using this pin.
2.7K ohm pull-up to VCC3.
No connect.
100 ohm resistor to AD18.
Part of CPU/bus frequency circuit. 2.7K ohm pull-up to VCC3.
Connected to CPUs. 330 ohm pull-up to 2.5V.
Part of CPU/bus frequency circuit. 2.7K ohm pull-up to VCC3.
DP: Connected to IOAPIC.
Design Checklist
Connection
3-16
Advertisement
Table of Contents
