Answer
Question: What are the PCM/I2S configurations of the Sterling-LWB? Answer: The PCM/I2S (BT_I2S_DI & BT_PCM_IN) inputs are shared on the module depending on the BT Audio configuration. That configuration is set by using a VS HCI command in Linux (write_I2SPCM_interface_param. The HCI UART is required, then either I2S or PCM, but not both. Pin Description Module Pin # SIP Pin # BT_PCM_SYNC 2 144 BT_PCM_IN 3 146 BT_PCM_OUT 4 145 BT_PCM_CLK 38 55 BT_I2S_CLK 35 105 BT_I2S_DO 36 110 BT_I2S_WS 37 109