W83787IF Просмотр технического описания (PDF) - Winbond

Номер в каталоге

Компоненты Описание

Список матч

W83787IF

WINBOND I/O WITH SERIAL-INFRARED SUPPORT

Winbond 

W83787IF

2.1.5 FDC Commands

Command Symbol Descriptions:

C:

Cylinder number 0 - 256

D:

Data Pattern

DIR:

Step Direction

DIR = 0, step out

DIR = 1, step in

DS0:

Disk Drive Select 0

DS1:

Disk Drive Select 1

DTL:

Data Length

EC:

Enable Count

EOT:

End of Track

EFIFO: Enable FIFO

EIS:

Enable Implied Seek

EOT:

End of track

FIFOTHR: FIFO Threshold

GAP:

Gap length selection

GPL:

Gap Length

H:

Head number

HDS:

Head number select

HLT:

Head Load Time

HUT:

Head Unload Time

LOCK:

Lock EFIFO, FIFOTHR, PTRTRK bits prevent affected by software reset

MFM:

MFM or FM Mode

MT:

Multitrack

N:

The number of data bytes written in a sector

NCN:

New Cylinder Number

ND:

Non-DMA Mode

OW:

Overwritten

PCN:

Present Cylinder Number

POLL:

Polling Disable

PRETRK: Precompensation Start Track Number

R:

Record

RCN:

Relative Cylinder Number

R/W:

Read/Write

SC:

Sector/per cylinder

SK:

Skip deleted data address mark

SRT:

Step Rate Time

ST0:

Status Register 0

ST1:

Status Register 1

ST2:

Status Register 2

ST3:

Status Register 3

WG:

Write gate alters timing of WE

- 21 -

Publication Release Date:Sep 1995

Revision A1

Share Link: