FDC37C78 데이터 시트보기 (PDF) - Microchip Technology

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FDC37C78

Floppy Disk Controller

Microchip Technology 

CONFIGURATION CONTROL REGISTER (CCR)

Address 3F7 WRITE ONLY

7

6

5

4

3

2

1

0

DRATE DRATE

SEL1 SEL0

RESET N/A N/A N/A N/A N/A N/A

1

0

COND.

BIT 0 and 1 DATA RATE SELECT 0 and 1

These bits determine the data rate of the floppy

controller. See Table 13 for the appropriate

values.

BIT 2 - 7 RESERVED

Should be set to a logical "0" by the DOR and the

DSR resets.

21

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