FDC37M81x SMSC Corporation, FDC37M81x Datasheet - Page 7
FDC37M81x
Manufacturer Part Number
FDC37M81x
Description
PC98/99 Compliant Enhanced Super I/O Controller
Manufacturer
SMSC Corporation
Datasheet
1.FDC37M81X.pdf
(198 pages)
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No./QFP
60,76
7,41,
PIN
18
16
11
10
12
17
15
14
13
84
85
87
88
89
86
91
90
95
96
98
8
9
5
3
1
2
Ground
+5 Volt Standby Supply Voltage
(Note 7)
Read Disk Data
Write Gate
Write Disk Data
Head Select
Step Direction
Step Pulse
Disk Change
Drive Select 0
Motor On 0
Write Protected
Track 0
Index Pulse Input
Drive Density Select 0
Drive Density Select 1
Receive Serial Data 1
Transmit Serial Data 1
Request to Send 1/System
Option (Note 6)
Clear to Send 1
Data Terminal Ready 1
Data Set Ready 1
Data Carrier Detect 1
Ring Indicator 1
Receive Serial Data 2/Infrared
Rx
Transmit Serial Data 2/Infrared
Tx (Note 4)
Request to Send 2/Sys Addr 12
NAME
DESCRIPTION OF PIN FUNCTIONS
SERIAL PORT 1 INTERFACE (8)
SERIAL PORT 2 INTERFACE (8)
FDD INTERFACE (14)
TOTAL
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
7
VSS
VTR
nRDATA
nWGATE
nWDATA
nHDSEL
nDIR
nSTEP
nDSKCHG
nDS0
nMTR0
nWRTPRT
nTRKO
nINDEX
DRVDEN0
DRVDEN1
RXD1
TXD1
nRTS1/
SYSOPT
nCTS1
nDTR1
nDSR1
nDCD1
nRI1
RXD2/IRRX
TXD2/IRTX
nRTS2/
SA12
SYMBOL
PER FUNCTION
O24PD/ O24PD
BUFFER TYPE
(O24/OD24)
(O24/OD24)
(O24/OD24)
(O24/OD24)
(O24/OD24)
(O24/OD24)
(O24/OD24)
(O24/OD24)
(O24/OD24)
(NOTE 1)
O4/I
O4/I
O4
O4
IS
IS
IS
IS
IS
I/I
I
I
I
I
I
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