Audio Outputs Expansion Header J1801 (26); Table 16. Audio Outputs Expansion Header Pinout J1801 - Lantronix Intrinsyc Open-Q 865XR SOM User Manual

Pin
Signal
No
9 CDC_MIC_BIAS4
11 GND
13 CDC_DMIC_CLK3
CDC_DMIC_DATA
15
3
17 VREG_S4A_1P8
19 GND
3.7.20

Audio Outputs Expansion Header J1801 (26)

The Open-Q 865XR SOM Development Kit audio subsystem is built around the Qualcomm Audio Codec
WCD9385 (28). The Audio Outputs Expansion Header J1801 exposes some of the audio output
capabilities of WCD9385 for the user. See item 26 in Figure 1 for the carrier board location of this header.
The pinout for this header is shown in the table below.

Table 16. Audio Outputs Expansion Header Pinout J1801

Pin
Signal
No
1 CDC_LINE_OUT1_P
3 No Net
5 CDC_LINE_REF
7 No Net
9 CDC_EAR_P
11 GND
13 CDC_SWR_CLK
15 CDC_WSA_EN
Open-Q 865XR SOM Development Kit User Guide
Description
Microphone Bias 4
System Ground
Digital Microphone 3
Clock
Digital Microphone 3
Data
SOM LDO Regulator S4A
+1.8V
System Ground
Description
Codec Line Out 1
Positive
No Net
Codec Reference
(GND)
No Net
Earphone Amplifier
Output Positive
System Ground
Codec PDM Clock
SOM PMIC GPIO127,
can be used as
3: Open-Q 865XR SOM Development Kit
Pin
Signal
No
10 MB_VREG_3P3
12 GND
14 CDC_DMIC_CLK4
CDC_DMIC_DATA
16
4
18 CDC_DMIC_CLK5
CDC_DMIC_DATA
20
5
Pin
Signal
No
2 CDC_LINE_OUT1_N
4 No Net
6 MB_VREG_3P3
8 No Net
10 CDC_EAR_N
12 SOM_SYS_PWR_PER
14 CDC_SWR_DATA
16 CDC_WSA_EN2
Description
Carrier board switching
regulator +3.3V
System Ground
Digital Microphone 4
Clock
Digital Microphone 4
Data
Digital Microphone 5
Clock
Digital Microphone 5
Data
Description
Codec Line Out 1
Negative
No Net
Carrier board switching
regulator +3.3V
No Net
Earphone Amplifier
Output Negative
SOM System Power
Codec PDM Data
SOM PMIC GPIO128,
can be used as
35