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5-144
WDOUT
WG
WE
WPRT
WRDATA
Write data out of the 1691 phase lock loop and
precompensation controller.
Write gate.
OUtput to the disk drive is valid.
Wri te enable.
Enables the
1797
chip for write
operations.
Write protect.
When this signal is received,
no write command can take place and write protect
bit in the status register is set.
Precompensated wri te data pulses that have been
reshaped by U16.
5DS¢-5DS3 Five-inch drive select signals.
5"FASTEP
Enables fast stepping in the 5.25" drives.
8"/5"
Selects between the 8" and the 5.25" drives.
8DS¢-8DS3 Eight-inch drive select signals.
CLOCK
¢1 -
<,14
Master clock signal.
Precompensation phase signals.
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