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FDC37C666GT Folha de dados(PDF) 9 Page - SMSC Corporation

Nome de Peças FDC37C666GT
Descrição Electrónicos  High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers
Download  152 Pages
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Fabricante Electrônico  SMSC [SMSC Corporation]
Página de início  http://www.smsc.com
Logo SMSC - SMSC Corporation

FDC37C666GT Folha de dados(HTML) 9 Page - SMSC Corporation

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9
DESCRIPTION OF PIN FUNCTIONS
PIN NO.
NAME
SYMBOL
BUFFER
TYPE
DESCRIPTION
1
Density Select
DENSEL
OD48
Indicates whether a low (250/300 Kb/s) or
high (500 Kb/s) data rate has been selected.
This is determined by the IDENT bit in
Configuration Register 3.
14
nWrite
Protected
nWRTPRT
IS
This active low Schmitt Trigger input senses
from the disk drive that a disk is write
protected. Any write command is ignored.
13
nTrack 00
nTR0
IS
This active low Schmitt Trigger input senses
from the disk drive that the head is
positioned over the outermost track.
12
nIndex
nINDEX
IS
This active low Schmitt Trigger input senses
from the disk drive that the head is
positioned over the beginning of a track, as
marked by an index hole.
19,18
19,18
Data Rate 0,
Data Rate 1
Media ID0,
Media ID1
DRATE0,
DRATE1
O24
I
These two outputs reflect bits 0 and 1
respectively of the Data Rate Register. At
power on, these two outputs are in a high
impedance state (refer to Table 50).
In Floppy Enhanced Mode 2 - These bits are
the Media ID 0,1 inputs. The value of these
bits can be read as bits 6 and 7 of the
Floppy Tape register.
SERIAL PORT INTERFACE
78,88
Receive Data
RXD1,
RXD2
I
Receiver serial data input.
79
Transmit Data
TXD1
PCF0
O4
I
Transmitter serial data output from Primary
Serial Port.
FDC37C666GT (Adapter Mode): Parallel
Port Configuration Control 0. During reset
active this input is read and latched to
define the address of the Parallel Port.


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