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COM3 and COM4 Asynchronous Serial Ports
The signals for COM3 and COM4 serial ports are routed to headers on the
TMCPN710 Transition Module. These headers are intended for debug
purposes only. Figure 1-5 depicts this configuration.
16C550
SOUT
SIN
RTS
CTS
DTR
DCD
DSR
RI
16C550
RI
DSR
DCD
DTR
CTS
RTS
SIN
SOUT
Figure 1-5. TMCPN710 Serial Ports 3 and 4
http://www.motorola.com/computer/literature
MCPN750A
IO
MUX
TMCPN710
J3
IO
MUX
Preparation
1
J11
3
5
7
9
Com3
Header
14
15
11
18
13
J14
18
11
15
Com4
Header
14
9
7
5
3
13
2363 9808
1-15
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