Mitsubishi Electric Apricot LS Pro, Hardware Technical Reference

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Peripheral items
Chapter 4
Chapter 4
Chapter 6
Appendix A
Appendix C
Pr
eface
Chapter 4
4/18 LS PRO HARDWARE TECHNICAL REFERENCE
Interface
The drive has one connector. The pinout of the connector and an illustration are shown
below.
Connector
Pin Function Pin Function
2 density select 1 14 drive select 2
3 not connected 16 motor on
4 not connected 18 direction
5 5V 20 step
6 density select 0 22 write data
7 5V 24 write enable
8 index 26 track 00
9 5V 28 write protect
10 drive select 0 30 read data
11 5V 32 head select
12 drive select 1 34 disk change
Note
All other pins are connected to 0 Volts.
Signal Density select 0,1
descriptions
Not currently used.
Drive select 0,1,2
The drive select inputs are used to enable and disable the other input/output lines.
When a select input is low the drive is active and the input/output lines are enabled.
When a select input is high, all outputs from the drive are disabled and all inputs are
ignored.
Index
When the drive is selected this line is pulsed low for each revolution of the disk drive
spindle.
Motor on
When this input is taken low and a disk is inserted in the drive, the drive motor starts.
When this input is taken high or a disk is removed the drive motor stops.
Direction
If this input is high the step input causes the read/write head to step away from the
centre of the disk. If this input is low the head steps toward the centre of the disk.
Step
A low pulse on this input will cause the read/write head to move to the next track. The
direction of movement is determined by the direction input at the end of the step pulse.
2
1
34
33