MACRO CPU Board Hardware Reference Manual
20
Connector Pinouts
Circuitry for J6- JTHW Interface
J7: (JRS232) Serial Port Connector
(10-pin Header at Location C-1)
Front View
Pin #
Symbol Function
Description
Notes
1 N.C.
No
connection
2 DTR
Bidirect
Data Terminal Ready
Just tied to DSR
3 TXD/
Output
Send Data
Transmit data to host
4 CTS Input
Clear to Send
Host ready bit
5 RXD/ Input
Receive Data
Receive data from host
6
RTS
Output
Request to Send
PMAC ready bit
7 DSR
Bidirect
Data Set Ready
Just tied to DTR
8
N.C. Output
No Connection
9 GND
Common
PMAC
Common
10
+5V
Output
+5Vdc Supply
Power supply out
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