參數(shù)資料
型號(hào): FDC37C665IR
廠商: SMSC Corporation
英文描述: 3/5 Volt Advanced High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controller with Infranred Support
中文描述: 3 / 5伏先進(jìn)的高性能多模并口超級(jí)I / O軟盤與Infranred支持磁盤控制器
文件頁數(shù): 36/162頁
文件大?。?/td> 562K
代理商: FDC37C665IR
36
CONFIGURATION CONTROL REGISTER (CCR)
Address 3F7 WRITE ONLY
PC/AT and PS/2 Modes
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"
PS/2 Model 30 Mode
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 NO PRECOMPENSATION
This bit can be set by software, but it has no
functionality. It can be read by bit 2 of the DSR
when in Model 30 register mode. Unaffected by
software reset.
BIT 3 - 7 RESERVED
Should be set to a logical "0"
Table 13 shows the state of the DENSEL pin.
The DENSEL pin is set high after a hardware
reset and is unaffected by the DOR and the
DSR resets.
7
6
5
4
3
2
1
0
DRATE
SEL1
1
DRATE
SEL0
0
RESET
COND.
N/A
N/A
N/A
N/A
N/A
N/A
7
6
5
4
3
2
1
0
NOPREC DRATE
SEL1
1
DRATE
SEL0
0
RESET
COND.
N/A
N/A
N/A
N/A
N/A
N/A
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