
TECHNICAL REFERENCE___________________________________________________________
42 __________________________________________________________________ M210829EN-A
Pin Signal
Description
Level
a20
RxD6
Data input for serial channel 6,
optional
RS232
a21
TxD5
Data output for serial channel 5,
optional
RS232
a22
RxD5
Data input for serial channel 5,
optional
RS232
a,b24 E3Rx+/-
Ethernet
data
input channel 3,
differential line
Ethernet
d,e24
E3Tx+/-
Ethernet data output channel 3,
differential line
Ethernet
a,b26 E4Rx+/-
Ethernet
data
input channel 4,
differential line
Ethernet
d,e26
E4Tx+/-
Ethernet data output channel 4,
differential line
Ethernet
a28
TxD3A
Data output for serial channel 3A RS232
b28
TxD3B
Data output for serial channel 3B RS232
c,d28
TxD3C+/-
Data output for serial channel 3C,
differential line
RS422
a29
RxD3A
Data input for serial channel 3A
RS232
b29
RxD3B
Data input for serial channel 3B
RS232
c,d29
RxD3C+/-
Data input for serial channel 3C,
differential line
RS422
a30
TxD2
Data output for serial channel 2
RS232
b30
DTR2
Data Terminal Ready for serial
channel 2
RS232
c30
RTS2
Ready to Send for serial channel
2
RS232
a31
RxD2
Data input for serial channel 2
RS232
b31
DSR2
Data Set Ready for serial channel
2
RS232
c31
CTS2
Clear to Send for serial channel 2 RS232
a32
TxD1
Data output for serial channel 1
RS232
b32
TxD4
Data output for serial channel 4
RS232
c,d32 OPx1-2
Output
Pin
1-2
RS232
a33
RxD1
Data input for serial channel 1
RS232
b33
RxD4
Data input for serial channel 4
RS232
c,d33 IPx1-2
Input Pin 1-2
RS232
c37
MRES#
Optional external reset input
+3.3 V
a38
JTDOUT
JTAG Test Data Out
+3.3 V
b38
JTCKIN
JTAG Test Clock In
+3.3 V
d38
JTDIN
JTAG Test Data In
+3.3 V
e38
JTMSIN
JTAG Test Mode Select In
+3.3 V
b39 TESTX# Test
Input
RS232
c41 +VSTBY Standby
voltage
+5
V
d41
FWGATE#
Floppy Disk Write Gate
+5 V
e41 FHDSEL# Floppy
Disk
Head Select
+5 V
a-e42
+3.3 V
+3.3 V operating voltage
a43
FMTR0#
Floppy Disk Motor on 0
+5 V
b43
FDR0#
Floppy Disk Drive Select 0
+5 V
c43 FDIR#
Floppy
Disk
Direction +5
V
d43
FSTEP#
Floppy Disk Step Inpulse
+5 V
e43
FWDATA#
Floppy Disk Write Data
+5 V
Содержание MPU112
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