Intrinsyc LANTRONIX Open-Q 820 User Manual page 38

Description
Analog audio line out
1, positive differential
output
Analog audio line out
2, positive differential
output
Audio line outputs 3
and 4 GND reference
Analog audio line out
3, single ended
output
Analog earpiece
amplifier out, positive
differential output
GND
Digital soundwire
data for WSA8810/
WSA8815 smart
speaker amplifier
Speaker amplifier
enable 1
1.8V output power
supply
5.0V output power
supply
3.9.13 On Board PCB WLAN Antenna
The Open-Q 820 / 820Pro µSOM carrier board has two on board WLAN PCB antennas that connects to the
QCA6174 WiFi module on the µSOM via coaxial cables that attaches to MH4L receptacles. These antennas
connect to the µSOM in the following configuration:
o WLAN1 on the carrier board connects to ANT2 on the QCA6174 WiFi module
o WLAN0 on the carrier board connects to ANT1 on the QCA6174 WiFi module
Open-Q™ 820 / 820Pro µSOM Dev Kit User Guide
Table 3.8-6 Audio Outputs Expansion Header J26 Pin out
Signal Pin NO
CDC_LINE_OU J26[1]
T1_P
CDC_LINE_OU J26[3]
T2_P
CDC_LINE_RE J26[5]
F
CDC_LINE_OU J26[7]
T3
CDC_EAR_P J26[9]
GND J26[11]
CDC_SWR_CL J26[13]
K
SPKR_AMP_EN J26[15]
1
VREG_S4A_1P J26[17]
8
MB_VREG_5P0 J26[19]
Open-Q 820 µSOM Development Kit
Description
Analog audio line CDC_LINE_OUT1_N
out 1, negative
differential output
Analog audio line CDC_LINE_OUT2_N
out 2, negative
differential output
3.3V output power MB_VREG_3P3
supply
Analog audio line CDC_LINE_OUT4
out 4, single ended
output
Analog earpiece CDC_EAR_N
amplifier out,
negative differential
output
3.8V output power MB_VREG_SOM
supply
Digital soundwire CDC_SWR_DATA
data for WSA8810/
WSA8815 smart
speaker amplifier
Speaker amplifier SPKR_AMP_EN2
enable 2
12V output power DC_IN_12V
supply
GND GND
Signal Pin NO
J26[2]
J26[4]
J26[6]
J26[8]
J26[10]
J26[12]
J26[14]
J26[16]
J26[18]
J26[20]
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