VIA Technologies Apollo Pro133A Design Manual page 95

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We Connect We Connect
Signal Name
PD[7:0]
AUTOFD#
PINIT#
SLCTIN#
STROBE#
ACK#
BUSY
ERROR#
PE
SLCT
Signal Name
DRVEN0
DRVEN1
DIR#
DS0#
DS1#
HDSEL#
MTR0#
MTR1#
STEP#
WDATA
WGATE#
DSKCHG#
INDEX#
RDATA#
TRK00#
WRTPRT#
Preliminary Revision 0.5, November 19, 1999
PARALLEL PORT INTERFACE
I/O
IO Connect to the printer connector. 4.7K ohm pull-up to VCC and a 180pF decoupling
capacitor to ground. These passive components should be placed near the connector.
IO Same as the above.
IO Same as the above.
IO Same as the above.
IO Same as the above.
I Same as the above.
I Same as the above.
I Same as the above.
I Same as the above.
I Same as the above.
FLOPPY DISK INTERFACE
I/O
OD Connect to primary floppy drive connector.
OD Connect to secondary floppy drive connector if it is installed. Otherwise, no connect.
OD Connect to the floppy drive connector.
OD Same as the above.
OD Same as the above.
OD Same as the above.
OD Same as the above.
OD Same as the above.
OD Same as the above.
OD Same as the above.
OD Same as the above.
I Connect to the floppy drive connector. 1K ohm pull-up to VCC.
I Same as the above.
I Same as the above.
I Same as the above.
I Same as the above.
Design Guide - VT82C694X Apollo Pro133 with VT82C686A
Connection
Connection
85
Signal Connectivity and Design Checklist