ST STM32L562E-DK, User Manual, Page: 24 / 61

Table 11 describes the CN13 audio jack connector pinout.
Table 11. CN13 audio jack connector pinout
Pin Signal name Codec pin Function
2 MIC_IN MICIN1 Microphone IN
3 GND GND GND
4 AOUTB AOUTB OUT_SPEAKER_LEFT
5 - NA -
6 AOUTA AOUTA OUT_SPEAKER_RIGHT
7 - NA NA
6.7.6 Digital microphone interface
A low power digital microphone U16 is available on STM32L562E-DK.
The interface used for this microphone is the DFSDM1 with DFSDM1_CKOUT and DFSDM1_DATIN1. The
microphone is supplied with a programmable clock directly generated by STM32L562QEI6QU.
The STM32L562QEI6QU DFSDM interface is shared and exclusive between the embedded microphone U13, the
MEMs expansion module on connector CN2 and with the CN3 STMod+ connector.
A quad SPDT switch U2 driven by a jumper JP1 routs the DFSDM interface to the selected application.
Table 12 describes the I/O configuration for the Audio DFSDM interface.
Table 12. I/O configuration for the U13 AUDIO MEMS
I/O Configuration
PG7 PG7 used as DFSDM_CKOUT
PB12 PB12 used as DFSDM_DATIN1
Table 13 describes the I/O configuration for the Audio DFSDM interface.
Table 13. CN13 audio jack connector pinout
Function
STM32
pin
Signal name Pin Pin Signal name
STM32
pin
Function
GND - GND 1 2 3V3 - 3V3
- - - 3 4 DFSDM_CKOUT_EXT PG7 DFSDM CLK
DFSDM DATA3 PC7 DFSDM_DATIN3 5 6 DFSDM_DATIN1_EXT PB12 DFSDM DATA1
- - - 7 8 - - -
- - - 9 10 DETECTn -
Module
detection
- - - 1 12 MEMS_LED PH1 Module LED
- - - 13 14 - - -
- - - 15 16 - - -
- - - 17 18 - - -
3V3 - 3V3 19 20 GND - GND
UM2617
Audio
UM2617 - Rev 2
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