Hi, Nigel, The PCM186x family of audio ADCs have an option to be configured in TDM mode. In this mode, PCM186x devices require a fixed 256×Fs BCLK, allowing up to eight channels of 32-bit data in a single audio serial bus. Please refer to below diagram as reference: For more general information about TDM transmission mode, please refer to the following app notes. These documents are specified for other devices, but the TDM concept is similar for the PCM186x family. Using TDM Function to Interface Four TLV320AIC33 Codecs With a Single Host Processor Using TLV320AIC3x Digital Audio Data Serial Interface With Time-Division Multiplexing Support Best Regards, -Diego Meléndez López Audio Applications Engineer
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