IEI Technology AFOKAR-08A-RK39, User Manual

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AFOKAR-08A-RK39
Page 22
3.6.2 I/O Connector 2 (24-pin)
The 24-pin I/O connector (IO 2) supports the following external peripheral devices:

1 x Audio out

1 x RS-232

1 x RS-485

2-bit digital input with isolation

2-bit digital output with isolation
The pinouts for the IO 2 connector are listed in the figure and table below.
Figure 3-9: IO 2 Connector Pinout Locations
Pin Description Pin Description
RS-232 1 RS232_TXD 13 RS232_RXD RS-232
2 RS232_RTS 14 RS232_CTS
3 GND 15 GND
RS-485 4 RS485- 16 DIO_GND Digital Output
5 RS485+ 17 DIO_OUT_1
Digital Input 6 DIO_GND 18 DIO_GND
7 DIO_IN_1 19 DIO_OUT_2
8 DIO_GND 20 DIO_GND
9 DIO_IN_2 21 DIO_VCC
Audio Out 10 AUDIO_GND 22 NC Audio Out
11 LINE_OUT_L 23 AUDIO_GND
12 LINE_OUT_R 24 Reserved
Table 3-2: IO 2 Connector Pinouts