參數(shù)資料
型號： FDC37C666GT
廠商： STANDARD MICROSYSTEMS CORP
元件分類： 存儲控制器/管理單元
英文描述： High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers
中文描述： 1 Mbps, IDE COMPATIBLE, FLOPPY DISK DRIVE CONTROLLER, PQFP100
封裝： QFP-100
文件頁數(shù)： 65/152頁
文件大小： 621K
代理商： FDC37C666GT
65
Table 27 - Result Phase Table
FINAL SECTOR
TRANSFERRED TO
HOST
MT
HEAD
D INFORMATION AT RESULT PHASE
C
NC
H
NC
R
N
NC
0
0
Less than EOT
R + 1
Equal to EOT
Less than EOT
C + 1
NC
NC
NC
01
NC
NC
1
R + 1
Equal to EOT
Less than EOT
C + 1
NC
NC
NC
01
NC
NC
1
0
R + 1
Equal to EOT
Less than EOT
NC
NC
LSB
NC
01
NC
NC
1
R + 1
Equal to EOT
C + 1
LSB
01
NC
NC: No Change, the same value as the one at the beginning of command execution.
LSB: Least Significant Bit, the LSB of H is complemented.
Write Data
After the Write Data command has been issued,
the FDC loads the head (if it is in the unloaded
state), waits the specified head load time if
unloaded (defined in the Specify command),
and begins reading ID fields. When the sector
address read from the diskette matches the
sector address specified in the command, the
FDC reads the data from the host via the FIFO
and writes it to the sector's data field.
After writing data into the current sector, the
FDC computes the CRC value and writes it into
the CRC field at the end of the sector transfer.
The Sector Number stored in "R" is incremented
by one, and the FDC continues writing to the
next data field. The FDC continues this "Multi-
Sector Write Operation". Upon receipt of a
terminal count signal or if a FIFO over/under run
occurs while a data field is being written, then
the remainder of the data field is filled with
zeros.
The FDC reads the ID field of each sector and
checks the CRC bytes. If it detects a CRC error
in one of the ID fields, it sets the IC code in
Status
Register
0
termination), sets the DE bit of Status Register 1
to "1", and terminates the Write Data command.
to
"01"
(abnormal
The Write Data command operates in much the
same manner as the Read Data command. The
following items are the same. Please refer to
the Read Data Command for details:
Transfer Capacity
EN (End of Cylinder) bit
ND (No Data) bit
Head Load, Unload Time Interval
ID information when the host terminates the
command
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