Kontron COMe Ref.Carrier T6 - Manual (Page 33)

COMe Reference Carrier Type 6 / Connectors and Features
30
5.14 Serial Interface
The PICMG COM.0 specification revision 2.0 defines two optional 2-pin serial interfaces on COM Express® connector
pins A98/A99 and A101/A102 formerly used for 12V VCC input. SER0 and SER1 can be used as a serial COM port on
COMe Reference Carrier Type 6 at connector J109 and J102.
J109 and J102 allow SER0 and SER1 as 2-pin RS232 interface COMA with Kontron Adapter cable KAB-DSUB9-2 . Please
check the documentation of your module if this interface is supported and how to configure.
Pin J109 (COMA) / J102 (COMB)
1 n.c.
2 n.c.
3 RX
4 n.c.
5 TX
6 n.c.
7 n.c.
8 n.c.
9 GND
10 +5V