LPC47M192 datasheet(47/228 Pages) SMSC

47 / 228 page

SMSC DS – LPC47M192

Page 47

Rev. 03/30/05

DATASHEET

Table 16 – Description of Command Symbols

SYMBOL

NAME

DESCRIPTION

RCN

Relative Cylinder

Number

Relative cylinder offset from present cylinder as used by the Relative

Seek command.

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.

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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