Copyright
©
2022
congatec
GmbH
CET0m10
43/58
5.10.4
Digital MIC
The conga-MEVAL provides a digital microphone (DMIC) header X123.
Table 37 X123 Pinout
Pin
Signal
Description
1
+3.3 V
3.3 V power supply for digital MIC
2
DMIC_DAT1
Serial data from digital MIC
3
GND
Ground
4
DMIC_CLK
Clock output from HDA codec to digital MiC
5
KEY
No pin
6
N.C
Not connected
Connector Type
X123:
6x 1-pin, 2.54 mm grid female
5.11
I
2
C Bus
The I²C signals are available in different locations on the conga-MEVAL, including on the feature connector X53 described in section 5.22
“Feature Connector”. The conga-MEVAL includes socket U42 for attaching an I²C EEPROM for test purposes during the system development.
The 8-pin DIL socket supports various 2-wire 3.3 V serial EEPROMs such as 24C04, 24C08 and 24C16. Use the I²C control commands implemented
in the congatec CGOS API driver to access the EEPROMs.
For more information, refer to the CGOS manual and the user’s guide of the COM Express module.
Connector Type
U42: EEPROM in 8-pin DIL package
Pin 1
No Pin
X123
U42
