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參數(shù)資料
| 型號： | TMS279XN |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FLOPPY DISK FORMATTERICONTROLLER FAMILY |
| 中文描述： | 軟盤驅(qū)動FORMATTERICONTROLLER家庭 |
| 文件頁數(shù)： | 35/40頁 |
| 文件大?。?/td> | 334K |
| 代理商： | TMS279XN |
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TMS279X (WD279X) FLOPPY DISK FORMATTER / CONTROLLER FAMILY
35
* Time doubles when CLK = 1 MHz.
t SERVICE (WORST CASE): FM 23.5μs, MFM 11.5 μs.
NOTES:
7. CS# may be permanently tied low if desired.
8. When writing data into sector tract or data register, user cannot read this register until at least 4 μs in MFM
after the rising edge of WE#. When writing into the command register, status is not valid until some 28 μs in
FM, and 14 μs in MFM Iater. These times are doubled when CLK 1 MHz.
9. DRQ rising edge: indicates that the data register is empty.
10. DRQ falling edge: indicates that the data register is loaded.
11. INTREQ rising edge: indicates the end of a command.
12. INTREQ falling edge: indicates that the command register is written to.
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