Product specifications

Design Guide - VT82C694X Apollo Pro133 with VT82C686A
Preliminary Revision 0.5, November 19, 1999 Signal Connectivity and Design Checklist
79
Technologies, Inc.
We ConnectWe Connect
PCI BUS INTERFACE
Signal Name I/O Connection
CBE[3:0]# IO Connect to VT82C686A and PCI slots.
AD[31:0] IO Same as the above.
FRAME# IO Connect between VT82C694X, PCI slots, and VT82C686A. 2.7K ohm pull-up to VCC5.
IRDY# IO Same as the above.
TRDY# IO Same as the above.
STOP# IO Same as the above.
DEVSEL# IO Same as the above.
SERR# IO Same as the above.
LOCK# IO Connect between VT82C694X and PCI slots. 2.7K ohm pull-up to VCC5.
PAR IO Connect to VT82C686A and PCI slots.
PREQ# I Connect to VT82C686A. 10K ohm pull-up to VCC3.
PGNT# O Connect to VT82C686A. 10K ohm pull-up to VCC3.
REQ[4:0]# I Connect to corresponding PCI slots. 2.7K ohm pull-up to VCC5.
GNT[4:0]# O Connect to corresponding PCI slots. 2.7K ohm pull-up to VCC3.
WSC# O No connect.
AGP BUS INTERFACE
Signal Name I/O Connection
GBE[3:0]# IO Connect to AGP slot.
GD[31:0] IO Same as the above.
SBA[7:0] I Same as the above.
ST[2:0] O Same as the above.
GFRM# IO Connect to AGP slot. 8.2K ohm pull-up to VDDQ.
GIRDY# IO Same as the above.
GTRDY# IO Same as the above.
GSTOP# IO Same as the above.
GDSEL# IO Same as the above.
GDS0 IO Same as the above.
GDS1 IO Same as the above.
SBS I Same as the above.
GPIPE# I Same as the above.
GRBF# I Same as the above.
GREQ# I Same as the above.
GGNT# O Same as the above.
GGNT# O Same as the above.
GWBF# I Same as the above.
GDS0# IO Connect to AGP slot. 8.2K ohm pull-down to ground.
GDS1# IO Same as the above.
SBS# I Same as the above.
NCOMP I Connected to VDDQ through a 60 ohm resistor.
PCOMP I Connected to ground through a 60 ohm resistor.
GPAR / GCKRUN# IO/O Connect to AGP slot. Then connected to ground through a 100K ohm serial resistor.