Canon A-200 series Service Manual page 80

Pin Name
110
Description
FLTITRKO
I When RW/SEEK is in RW, this becomes FLT and indicates
that the drive is FAULT. When RW/SEEK is SEEK, be­
comes TRKO and indicates that the RIW head of the drive
is at cylinder O.
TC
I Indicates that read or write operation of the main system
has been completed.
WDATA
0
Data to be written to the drive. Consists of clock bit and
data bit.
WE
0
Makes the drive to write data.
WCLK
I
A timing signal for data to be written by the drive:
8MHz operation: FM - 500kHz, MFM - 1MHz
4MHz operation: FM - 250kHz, MFM - 500 kHz
PSO, 1
0
When writing in MFM mode, this determines whether the
transfer speed of written data is to be advanced or
delayed for obtaining a margin in load operation of the
drive.
RDATA
I
Read data from the drive. Consists of clock bit and data bit.
WINDOW I Emitted from the VFO circuit and used to sample the
RDATA. A phase synchronization between the data bit of
the RDATA signal and WINDOW signal is made at the
FOe.
Table 6-10
77