J2: com2 serial port, J3: irda connector, J4: spi debug tools port – IBASE MB930 User Manual
Page 25: Factory use only), J5: audio front header, Pin # signal name
INSTALLATIONS
J2: COM2 Serial Port
COM2 is jumper selectable for RS-232, RS-422 and RS-485.
Please refer to JP2: RS232/422/485 (COM2) Selection
Pin #
Signal Name
RS-232
R2-422 RS-485
1 DCD TX- DATA-
2 RX TX+ DATA+
3 TX RX+ NC
4 DTR RX-
NC
5 Ground Ground Ground
6 DSR RTS-
NC
7 RTS RTS+ NC
8 CTS CTS+ NC
9 RI CTS- NC
10 NC
NC
NC
J3: IrDA Connector
Pin #
Signal Name
1 +5V
2 No
connect
3 Ir
RX
4 Ground
5 Ir
TX
J4: SPI Debug Tools Port
(Factory use only)
J5: Audio Front Header
Signal Name
Pin #
Pin #
Signal Name
MIC2_L 1 2 Ground
MIC2_R 3 4 Presence#
Line2_R 5 6 MIC2_ID
Sense 7 8 NC
Line2_L 9 10 Line2_ID
MB930-R User’s Manual
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