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