AXIOMTEK MANO842 Series, Руководство пользователя

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MANO842 Mini ITX Motherboard
16 Board and Pin Assignments
2.4.12 GPIO Header (CN17)
This header (5x2-pin p=2.54mm) is for digital I/O interface.
Note
[*]
:
“H” or “L” means the default voltage is High or Low level, and GPIO
output is 5V.
2.4.13 COM Connector (CN18)
This connector is for COM1 and COM2 serial port interfaces which are selectable for
RS-232/422/485 mode. If you need COM1 to support RS-422 or RS-485, please refer to
section 2.3.5. If you need COM2 to support RS-422 or RS-485, please refer to section
2.3.6. The pin assignments of RS-232/422/485 are listed in table below.
Pin Signal Pin Signal
1
SIO_GPO74
(0xA06, Bit4, H)
[*]
2
SIO_GPI70
(0xA06, Bit0)
3
SIO_GPO75
(0xA06, Bit5, H)
[*]
4
SIO_GPI71
(0xA06, Bit1)
5
SIO_GPO76
(0xA06, Bit6, H)
[*]
6
SIO_GPI72
(0xA06, Bit2)
7
SIO_GPO77
(0xA06, Bit7, H)
[*]
8
SIO_GPI73
(0xA06, Bit3)
9 GND 10 GND
Pin RS-232 RS-422 RS-485
1 DCD# TX- 485-
2 RXD TX+ 485+
3 TXD RX+ N/C
4 DTR# RX- N/C
5 GND GND GND
6 DSR# N/C N/C
7 RTS# N/C N/C
8 CTS# N/C N/C
9 RI# N/C N/C