Product specifications

Design Guide - VT82C694X Apollo Pro133 with VT82C686A
Preliminary Revision 0.5, November 19, 1999 Signal Connectivity and Design Checklist
82
Technologies, Inc.
We ConnectWe Connect
ISA BUS INTERFACE
Signal Name I/O Connection
SA[19:16] IO Connect to ISA slots and BIOS ROM. 4.7K ohm pull-up to VCC. Connect SA[19:17] also
to LA{19:17}.
SA[15:0]/SDD[15:0] IO Connect to ISA slots and BIOS ROM. 4.7K ohm pull-up to VCC. And connected to
secondary IDE connector through two 74F245 ICs.
LA[23:20] IO Connect to ISA slots. 4.7K ohm pull-up to VCC.
SD[15:0] IO Connect to ISA slots and a 74F245 transceiver. 4.7K ohm pull-up to VCC.
SBHE# IO Connect to ISA slots. 4.7K ohm pull-up to VCC.
IOR# IO Same as the above.
IOW# IO Same as the above.
MEMR# IO Same as the above.
MEMW# IO Same as the above.
SMEMR# O Same as the above.
SMEMW O Same as the above.
BALE O Connect to ISA slots.
IOCS16# I Connect to ISA slots. 330 ohm pull-up to VCC.
MCS16# I Connect to ISA slots. 330 ohm pull-up to VCC.
IOCHCK#/GPI0 I Connect to ISA slots. 4.7K ohm pull-up to VCC.
IOCHRDY I Connect to ISA slots. 4.7K ohm pull-up to VCC.
RFSH# IO Connect to ISA slots. 330 ohm pull-up to VCC.
AEN O Connect to ISA slots.
IRQ1/MSCK I/IO No connect.
IRQ[5:3] I Connect to ISA slots. 4.7K ohm pull-up to VCC and 68pF capacitor to ground.
IRQ6/
GPI4/
SLPBTN#
I
I
I
Connect to ISA slots. 4.7K ohm pull-up to VCC and 68pF capacitor to ground.
IRQ7 I Connect to ISA slots. 4.7K ohm pull-up to VCC and 68pF capacitor to ground.
IRQ8#/GPI1 I No connect.
IRQ[11:9] I Connect to ISA slots. 4.7K ohm pull-up to VCC and 68pF capacitor to ground.
IRQ12/MSDT I/IO No connect.
IRQ[15:14] I Connect to ISA slots and IDE connectors. 4.7K ohm pull-up to VCC and 68pF capacitor to
ground. Both passive components should be placed near the slots.
DRQ[1:0] I Connect to ISA slots. 5.6K ohm pull-down.
DRQ2/
SERIRQ/
GPIOE/
OC1#
I
I
IO
I
Connect to ISA slots. 5.6K ohm pull-down.
DRQ3 I Connect to ISA slots. 5.6K ohm pull-down.
DRQ[7:5] I Connect to ISA slots. 5.6K ohm pull-down.
DACK[1:0]# O Connect to ISA slots.
DACK2#/
GPIOF/
OC0#
I
IO
I
Connect to ISA slots.
DACK3# I Connect to ISA slots.
DACK[7:5]# I Connect to ISA slots.
TC O Connect to ISA slots. 68pF capacitor to ground
SPKR O Connected to speaker circuitry or AC'97 CODEC through a series 100 ohm resistor. 4.7K
ohm pull-up to VCC3 for assigning SDD bus to Audio/Game or 4.7K ohm pull-down for
unchanging SDD bus function.