DocID030511 Rev 1 19/69
UM2198 Hardware layout and configuration
68
Note:1 I
2
C address of WM8994ECS/R is 0b0011010.
Note:2 PDM clock is on PE2 and it conflicts with SAI_CLK on PE2 by default. When PDM and SAI
functions are used at the same time, SB57 must be removed and SB56 must be closed to
move SAI_CLK to PG7.
8.9 USB OTG1 FS
The STM32H743I-EVAL Evaluation board supports USB OTG1 full-speed communication
through a USB Micro-AB connector (CN18) and USB power switch (U18) connected to
V
BUS
. The Evaluation board can be powered by this USB connection at 5 V DC with 500 mA
current limitation.
Table 8. Audio related switch and jumper
Switch/
Jumper
Description
SW2
Digital microphone is connected to the audio codec when SW2 is set as shown to
the right (Default setting):
Digital microphone is connected to the DFSDM port of STM32H743XI when SW2 is
set as shown to the right:
Digital microphone is connected to the PDM port of STM32H743XI when SW2 is set
as shown to the right:
JP12
Digital microphone power source is connected to +3.3 V power when JP12 is set as
shown to the right (Default setting):
Digital microphone power source is connected to MICBIAS1 from WM8994ECS/R
when JP12 is set as shown to the right:
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