Com3 And Com4 Asynchronous Serial Ports - Motorola MCPN750A Installation And Use Manual

Hardware Preparation and Installation
1

COM3 and COM4 Asynchronous Serial Ports

16C550
16C550
1-20
The signals for COM3 and COM4 serial ports are routed to 10-pin headers
on the TM-PIMC-0001 Transition Module (J12 and J13). These headers
function as I/O connectors for the MCPN750A and are permanently
configured as DTE. Figure 1-8 depicts this configuration.
MCPN750A
SOUT
SIN
RTS
CTS
DTR
DCD
DSR
RI
IO
MUX
RI
DSR
DCD
DTR
CTS
RTS
SIN
SOUT
Figure 1-8. TM-PIMC-0001 Serial Ports 3 and 4
TM-PIMC-0001
J3
IO
MUX
Computer Group Literature Center Web Site
J12
5
3
4
6
Com3
Header
7
1
2
8
9
J13
8
2
1
Com4
Header
7
6
4
3
5
9
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