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FDC37C78 Fiches technique(PDF) 11 Page - SMSC Corporation

No de pièce FDC37C78
Description  Floppy Disk Controller
Download  82 Pages
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Fabricant  SMSC [SMSC Corporation]
Site Internet  http://www.smsc.com
Logo SMSC - SMSC Corporation

FDC37C78 Fiches technique(HTML) 11 Page - SMSC Corporation

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FLOPPY DISK CONTROLLER
The Floppy Disk Controller (FDC) provides the
interface between a host microprocessor and the
floppy disk drives.
The FDC integrates the
functions of the Formatter/Controller, Digital Data
Separator, Write Precompensation and Data Rate
Selection logic for an IBM XT/AT compatible FDC.
The true CMOS 765B core guarantees 100% IBM
PC XT/AT compatibility in addition to providing
data overflow and underflow protection.
The
FDC37C78
is
compatible
to
the
82077AA using SMSC's proprietary floppy disk
controller core.
FLOPPY
DISK
CONTROLLER
INTERNAL
REGISTERS
The Floppy Disk Controller contains eight internal
registers which facilitate the interfacing between
the host microprocessor and the disk drive. Table
2 shows the addresses required to access these
registers.
Registers other than the ones shown
are not supported.
The rest of the FDC
description assumes the Base I/O Address is 3F0.
Table 2 - Status, Data and Control Registers
BASE I/O
ADDRESS
REGISTER
+0
+1
+2
+3
+4
+4
+5
+6
+7
+7
R/W
R/W
R
W
R/W
R
W
Reserved
Reserved
Digital Output Register
Tape Drive Register
Main Status Register
Data Rate Select Register
Data (FIFO)
Reserved
Digital Input Register
Configuration Control Register
DOR
TSR
MSR
DSR
FIFO
DIR
CCR


Numéro de pièce similaire - FDC37C78_07

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Description similaire - FDC37C78_07

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