FDC37C666GT View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

MFG CO.

FDC37C666GT

High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers

SMSC -> Microchip 

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SYMBOL

GAP

GPL

H/HDS

HLT

HUT

LOCK

MFM

Table 21 - Description of Command Symbols

NAME

DESCRIPTION

Alters Gap 2 length when using Perpendicular Mode.

Gap Length

The Gap 3 size. (Gap 3 is the space between sectors excluding

the VCO synchronization field).

Head Address

Selected head: 0 or 1 (disk side 0 or 1) as encoded in the sector

ID field.

Head Load Time The time interval that FDC waits after loading the head and before

initializing a read or write operation. Refer to the Specify

command for actual delays.

Head Unload

Time

The time interval from the end of the execution phase (of a read or

write command) until the head is unloaded. Refer to the Specify

command for actual delays.

Lock defines whether EFIFO, FIFOTHR, and PRETRK

parameters of the CONFIGURE COMMAND can be reset to their

default values by a "software Reset". (A reset caused by writing to

the appropriate bits of either tha DSR or DOR)

MFM/FM Mode

Selector

A one selects the double density (MFM) mode. A zero selects

single density (FM) mode.

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