FLOPPY DISK DRIVE SPECIFICATION
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5.4.2 Track 00
"LOW" level of this signal indicates the head is on Track 00 position and stepping motor is at the specified position respectively.
5.4.3 Write Protect
When a
the write operation is inhibited.
5.4.4 Read Data (MFM)
Read Data read out from the disk is transferred to the host system
in the same form as it was received on the Write Data line. Each flux reversal sensed on the disk produces the only transition from "HIGH" level to "LOW" level. For the seperation of the clock bits from the data, the leading edge of a change from "HIGH" to "LOW" level is used.
Ta±0.5 %
Tb±0.5 %
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| Tc | 0.5 % |
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| 400 | ns±20 % | |||
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Density Mode |
| Ta | ㎲ | ㎲ | Tc ( | ㎲ | ) | |
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| ( ) | Tb ( ) |
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Density | Transfer Rate | (Typ.) | (Typ.) | (Typ.) |
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1.0MB | 250 | kbps |
| 4 | 6 | 8 |
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1.6MB | 500 | kbps |
| 2 | 3 | 4 |
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2.0MB | 500 | kbps |
| 2 | 3 | 4 |
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SEMA ELECTRONICS CO.,LTD
