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FDC37B72X Datasheet(PDF) 40 Page - SMSC Corporation

Part # FDC37B72X
Description  128 Pin Enhanced Super I/O Controller with ACPI Support
Download  244 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

FDC37B72X Datasheet(HTML) 40 Page - SMSC Corporation

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40
SYMBOL
NAME
DESCRIPTION
PRETRK
Precompensation
Start Track
Number
Programmable from track 00 to FFH.
R
Sector Address
The sector number to be read or written. In multi-sector transfers,
this parameter specifies the sector number of the first sector to be
read or written.
RCN
Relative Cylinder
Number
Relative cylinder offset from present cylinder as used by the
Relative Seek command.
SC
Number of
Sectors Per Track
The number of sectors per track to be initialized by the Format
command. The number of sectors per track to be verified during a
Verify command when EC is set.
SK
Skip Flag
When set to 1, sectors containing a deleted data address mark will
automatically be skipped during the execution of Read Data. If
Read Deleted is executed, only sectors with a deleted address
mark will be accessed.
When set to "0", the sector is read or
written the same as the read and write commands.
SRT
Step Rate Interval The time interval between step pulses issued by the FDC.
Programmable from 0.5 to 8 milliseconds in increments of 0.5 ms
at the 1 Mbit data rate. Refer to the SPECIFY command for actual
delays.
ST0
ST1
ST2
ST3
Status 0
Status 1
Status 2
Status 3
Registers within the FDC which store status information after a
command has been executed. This status information is available
to the host during the result phase after command execution.
WGATE
Write Gate
Alters timing of WE to allow for pre-erase loads in perpendicular
drives.


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