Figure 618. Sai_Adr Format In Tdm, 16-Bit Slot Width - ST STM32G4 Series Reference Manual

Serial audio interface (SAI)
b31
word 4n
word 4n+1
word 4n+3
b31
word 2n
word 2n+1
b31
word 2n
•
Using a 8-bit slot width (DS = 0b010 and SLOTSZ = 0). Refer to
For an 8 microphone configuration, 8 consecutive words read from the SAI_ADR
register contain a byte of data from each microphone. Note that the 8-bit data of
SAI_ADR are right aligned.
For 4 or 2 microphone configuration, the SAI behavior is similar to 8 microphone
configurations. Up to 4 words of 8 bits are required to acquire a byte from 4
microphones and 2 words from 2 microphones.
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Figure 618. SAI_ADR format in TDM, 16-bit slot width

8 Microphones configuration
zeros
zeros
zeros
4 Microphones configuration
zeros
zeros
2 Microphones configuration
zeros
LSBFIRST = 0
b16 b15
...
LSBFIRST = 0
LSBFIRST = 0
RM0440 Rev 1
RM0440
b0
b0
b0
MSv35471V1
Figure 619.