WM8281 Datasheet, PDF (147/392 Pages) Cirrus Logic – Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation

WM8281
BCLK
LRCLK
TXDAT
RXDAT
Processor
WM8281
WM8281
or similar
CODEC
BCLK
LRCLK
TXDAT
RXDAT
Figure 55 TDM with Processor as Master
Note:
The WM8281 is a 24-bit device. If the user operates the WM8281 in 32-bit mode then the 8 LSBs will
be ignored on the receiving side and not driven on the transmitting side. It is therefore recommended
to add a pull-down resistor if necessary to the RXDAT line and the TXDAT line in TDM mode.
Rev 4.0
147