ASRock Industrial SBC-250, User Manual

Page: 19 / 37

19
LVDS Connector
(40-pin LVDS1)
(see p.8 No. 11)
COM Port Headers
(9-pin COM1, 2, 3, 4)
(see p.8 No. 21)
This motherboard supports RS232/422/485 on COM3 port. Please refer to
below table for the pin definition. In addition, COM3 port (RS232/422/485) can
be adjusted in BIOS setup utility > Advanced Screen > Super IO Configuration. You
may refer to page 30 for details.
COM3 Port Pin Definition
* eDP by pass mode pin definition:
1
39 40
2
PIN Signal Name PIN Signal Name
39 LCD_BLT_VCC 40 LCD_BLT_VCC
37 CON_LBKLT_CTL 38 LCD_BLT_VCC
35 GND 36 CON_LBKLT_EN
33 LVDS_B_CLK# 34 LVDS_B_CLK
31 LVDS_B_DATA3 32 GND
29 DPLVDD_EN 30 LVDS_B_DATA3#
27 LVDS_B_DATA2# 28 LVDS_B_DATA2
25 LVDS_B_DATA1 26 GND
23 GND 24 LVDS_B_DATA1#
21 LVDS_B_DATA0# 22 LVDS_B_DATA0
19 LVDS_A_CLK 20 GND
17 GND 18 LVDS_A_CLK#
15 LVDS_A_DATA3# 16 LVDS_A_DATA3
13 LVDS_A_DATA2 14 GND
11 GND 12 LVDS_A_DATA2#
9 LVDS_A_DATA1# 10 LVDS_A_DATA1
7 LVDS_A_DATA0 8 GND
5 LDDC_DATA 6 LVDS_A_DATA0#
3 +3.3V 4 LDDC_CLK
1 LCD_VCC 2 LCD_VCC
PIN
Signal Name
PIN
Signal Name
39
LCD_BL
T_VCC
40
LCD_BL
T_VCC
37
CON_LBKL
T_CTL
38
LCD_BL
T_VCC
35
GND
36
CON_LBKL
T_EN
33
N/A
34
N/A
31
N/A
32
GND
29
DPL
VDD_EN
30
N/A
27
N/A
28
N/A
25
N/A
26
GND
23
GND
24
N/A
21
N/A
22
N/A
19
EDP_AUXP
20
GND
17
GND
18
EDP_AUXN
15
N/A
16
N/A
13
EDP_TX0
14
GND
11
GND
12
EDP_TX0#
9
EDP_TX1#
10
EDP_TX1
7
N/A
8
GND
5
N/A
6
N/A
3
N/A
4
N/A
1
LCD_VCC
2
LCD_VCC
PIN RS232 RS422 RS485
1 DCD TX- RTX-
2 RXD TX+ RTX+
3 TXD RX+ N/A
4 DTR RX- N/A
5 GND GND GND
6 DSR N/A N/A
7 RTS N/A N/A
8 CTS N/A N/A
9
COM1, 2: N/A
COM3, 4: PWR
COM1, 2: N/A
COM3, 4: PWR
COM1, 2: N/A
COM3, 4: PWR