Motorola CPV5300 CompactPCI Installation Manual page 63

Pin Assignments
Table A-16. Floppy Header Pin Assignments for the CPV5300 Transition Module
Pin Signal
Number Mnemonic
17 GND
19 GND
21 GND
23 GND
25 GND
27 GND
29 GND
31 GND
33 GND
(J9) (Continued)
Signal Pin
Description Number
drive common 18
drive common 20
drive common 22
drive common 24
drive common 26
drive common 28
drive common 30
drive common 32
drive common 34
Signal Signal Description
Mnemonic
DIR controls direction of the
floppy disk drive head
during seek operation
STEP supplies step pulses to
move head during seek
operations
WDATA writes serial data to disk
drive
WGATE enables head of disk
drive to write to disk
TR0 head of floppy disk
drive is at track 0
WPROT disk is write protected
RDATA raw read data from disk
drive
HDSEL determines the side of
the floppy disk being
accessed
DSKCHG notifies disk drive
controller that the drive
door is open
A
A-19