Installation Instructions
· 14 ·
EC3-1813CLD2NA(CHENGDU)
2.14 Audio Port
This motherboard provides one 2×5Pin audio port.
Pin
Signal Name
Pin
Signal Name
1 LOUT_R 2 LOUT_L
3 GND_AUDIO 4 GND_AUDIO
5 LIN_R 6 LIN_L
7 GND_AUDIO 8 GND_AUDIO
AUDIO1
(pitch: 2.0mm)
9 MIC_L
10
MIC_R
2.15 GPIO Port
This motherboard provides one GPIO port with 8-channel input and 8-channel output.
Pin
Signal Name
Pin
Signal Name
1 GPIO1 2 GPIO9
3 GPIO2 4 GPIO10
5 GPIO3 6 GPIO11
7 GPIO4 8 GPIO12
9 GPIO5
10
GPIO13
11 GPIO6 12
GPIO14
13 GPIO7 14 GPIO15
15 GPIO8 16 GPIO16
17 +5V 18 +5V
GPIO1
(pitch: 2.0mm)
19 GND 20 GND
Note: The factory Default is that the Pin1,3,5,7,9,11,13,15 of the port are CMOS input,
while Pin2, 4, 6, 8, 10, 12, 14, 16 are CMOS output. The factory default status is high
electrical level, and the voltage range of input/output signals is 0
～
5V.
