FDC37M707-MS Standard Microsystems (SMSC), FDC37M707-MS Datasheet - Page 38

• Manufacturer Part Number: FDC37M707-MS
• Manufacturer: Standard Microsystems (SMSC)

Specifications of FDC37M707-MS

• Pin Count: 100
• Lead Free Status / RoHS Status: Compliant

OW
PCN
POLL
PRETRK
R
RCN
SC
SK
SRT
ST0
ST1
ST2
ST3
WGATE
SYMBOL
Overwrite
Present
Cylinder
Number
Polling
Disable
Precompensat
ion Start Track
Number
Sector
Address
Relative
Cylinder
Number
Number of
Sectors Per
Track
Skip Flag
Step Rate
Interval
Status 0
Status 1
Status 2
Status 3
Write Gate
NAME
Table 17 - Description of Command Symbols
The bits D0-D3 of the Perpendicular Mode Command can only be
modified if OW is set to 1. OW id defined in the Lock command.
The current position of the head at the completion of Sense Interrupt
Status command.
When set, the internal polling routine is disabled.
polling is enabled.
Programmable from track 00 to FFH.
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.
Relative cylinder offset from present cylinder as used by the
Relative Seek command.
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.
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.
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.
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.
Alters timing of WE to allow for pre-erase loads in perpendicular
drives.
38
DESCRIPTION
When clear,