Drive Opera~Ion - NEC FDI036A Product Description

2
0
3 DRIVE OPERATION
When a diskette is inserted into the FDD, the.
spindle motor rotates automatically untill the
chucking of the disk is finished. Then the FDD
becomes a standby status. After the MOTOR ON
sign~l
is.true, the. FDD_becomes ready
~hen
the:
spindle motor reaches the specified rotation speed.
When the drive is selected, it transfers
the READY signal to the controller.
The magnetic head moves to a target track
according to the STEP pluse and DIRECTION
SELECT signals.
The desired magnetic head is selected by the SIDE
SELECT signal from the controller. Now FDD is
ready for read/write operations.
For a write operation, the WRITE DATA signal which
is the serial data sent from the controller
converted into magnetized pattern and is recorded
on the disk.
For a read operation, the magnet~zed pattern
recorded on the disk is detected by the head and is
converted into serial data, and is sent to the
controller as a READ DATA signal.