Intel 440GX ユーザーズマニュアル

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.