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Table 3-7. PIIX4E Connectivity (Sheet 3 of 4)
Signal Names
PHLD#
PHLDA#
PIORDY
PIRQ[D:A]#
PWRBT#
PWROK
RCIN#
REFRESH#
REQ[C:A]# / GPI[4:2]
REQ[3:0]#
RI# / GPI12
RSMRST#
RSTDRV
RTCALE / GPO25
RTCCS# / GPO24
RTCX1
RTCX2
SA[0:19]
SBHE#
SCS1#
SCS3#
SD[0:15]
SDA[2:0]
SDDACK#
SDD[15:0]
SDIOR#
SDIOW#
SDREQ
SERIRQ / GPI7
SERR#
SIORDY
SLP#
SMBALERT# / GPI11
®
Intel
440GX AGPset Design Guide
Connected to 82443GX. 8.2K ohm pull-up to VCC3.
Connected to 82443GX. 8.2K ohm pull-up to VCC3.
Connected to IDE through 47 ohm series resistor. 1K ohm pull-up to VCC on
the PIIX4E side of the series resistor.
2.7K ohm pull-up to 5V or 10K ohm pull-up to 3V. Connect between 443GX, PCI
slots, and PIIX4E. PIRQ[A:B]# also go to AGP. DP: PIRQ[A:D]# connected to
IOAPIC.
From power button circuitry.
Connect to 82443GX and power up logic.
8.2K ohm pull-up to VCC3. Connect to SIO.
Connected to ISA slots. 1K ohm pull-up to VCC.
8.2K ohm pull-up to VCC3.
Connect to corresponding REQ[3:0]# signals on the Host Bridge(443GX) and
PCI connectors. 8.2K-ohm pull-up to VCC.
Connected to AGP connector AGP_PME# (pin A48). 8.2K ohm pull-up to 3VSB.
From ATX connector buffer/delay circuitry.
Connect to Ultra I/O, ISA slots, and IDE (through a Schmitt trigger).
No connect.
No connect.
Connect to RTC crystal.
Connect to RTC crystal.
Connected to ISA slots, Ultra I/O, Flash, LM79. 8.2K ohm pull-up to VCC. DP:
Connected to IOAPIC.
Connect to ISA slots.
Connected to IDE connector through 33 ohm series resistor.
Connected to IDE connector through 33 ohm series resistor.
Connected to ISA slots, Ultra I/O, LM79. 8.2K ohm pull-up to VCC. DP:
Connected to IOAPIC.
Connected to IDE connector through 33 ohm series resistors.
Connected to IDE connector through 33 ohm series resistor.
Connected to IDE connector through 33 ohm series resistors. It is
recommended that PDD[7] have a 10K ohm pull-down resistor.
Connected to IDE connector through 33 ohm series resistor.
Connected to IDE connector through 33 ohm series resistor.
Connected to IDE through 33 ohm series resistor. 5.6K ohm pull-down on the
PIIX4E side of the series resistor.
2.7K ohm pull-up to VCC3.
2.7K ohm pull-up to 5V or 10K ohm pull-up to 3V. Connect between 82443GX,
PCI slots, and PIIX4E.
Connected to IDE through 47 ohm series resistor. 1K ohm pull-up to VCC on
the PIIX4E side of the series resistor.
Connected to CPUs. 330 ohm pull-up to 2.5V.
Connect to MAX1617. 8.2K ohm pull-up to 3VSB.
Design Checklist
Connection
3-18
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