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參數(shù)資料
| 型號： | 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伏先進的高性能多模并口超級I / O軟盤與Infranred支持磁盤控制器 |
| 文件頁數(shù)： | 61/162頁 |
| 文件大?。?/td> | 562K |
| 代理商： | FDC37C665IR |
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61
Read Deleted Data
This command is the same as the Read Data
command, only it operates on sectors that
contain a Deleted Data Address Mark at the
beginning of a Data Field.
Table 25 describes the effect of the SK bit on
the Read Deleted Data command execution and
results.
Except where noted in Table 25, the C or R
value of the sector address is automatically
incremented (see Table 26).
Table 25 - Skip Bit vs. Read Deleted Data Command
DATA ADDRESS
MARK TYPE
ENCOUNTERED
SECTOR
READ
Normal Data
Yes
SK BIT
VALUE
RESULTS
CM BIT OF
ST2 SET
Yes
DESCRIPTION
OF RESULTS
Address not
incremented.
Next sector not
searched for.
Normal
termination.
Normal
termination.
Sector not read
("skipped").
Normal
termination.
0
0
1
1
Deleted Data
Normal Data
Deleted Data
Yes
No
Yes
No
Yes
No
Read A Track
This command is similar to the Read Data
command except that the entire data field is
read continuously from each of the sectors of a
track. Immediately after encountering a pulse
on the nINDEX pin, the FDC starts to read all
data fields on the track as continuous blocks of
data without regard to logical sector numbers. If
the FDC finds an error in the ID or DATA CRC
check bytes, it continues to read data from the
track and sets the appropriate error bits at the
end of the command. The FDC compares the
ID information read from each sector with the
specified value in the command and sets the
ND flag of Status Register 1 to a "1" if there is
no comparison. Multi-track or skip operations
are not allowed with this command. The MT
and SK bits (bits D7 and D5 of the first
command byte respectively) should always be
set to "0".
This command terminates when the EOT
specified number of sectors has not been read.
If the FDC does not find an ID Address Mark on
the diskette after the second occurrence of a
pulse on the IDX pin, then it sets the IC code in
Status
Register
0
termination), sets the MA bit in Status Register
1 to "1", and terminates the command.
to
"01"
(abnormal
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PDF描述 |
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| FDC37C665GT | High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers |
| FDC37C666GT | High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers |
| FDC37C67X | ENHANCED SUPER I/O CONTROLLER WITH FAST IR |
| FDC37C957FR | ULTRA I/O CONTROLLER FOR PORTABLE APPLICATIONS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FDC37C665IRQFP | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:SMSC 功能描述: |
| FDC37C666GT | 制造商:SMSC 制造商全稱:SMSC 功能描述:High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers |
| FDC37C669 | 制造商:SMSC 制造商全稱:SMSC 功能描述:PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support |
| FDC37C669_07 | 制造商:SMSC 制造商全稱:SMSC 功能描述:PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support |
| FDC37C669FRQFP | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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