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Wi-Fi Bluetooth for Linux Forum Discussions

Danny_Scott
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We are using the CYW43012 (LBEE591LV Module) for Bluetooth in slave PCM mode not i2S mode in order to replace a now obsolete module. Therefore the CLK, DATA_IN and SYNC are all inputs to the module / chipset.

What clock edge should the data, and sync signals be sampled on please as the PCM Interface Timing Diagrams were removed in the CYW43012 datasheet (document number 002-18925 Rev *J). Does anybody know why? Is this interface / protocol not supported / not working and do we have to use the i2S configuration instead?

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Owen_Zhang123
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Please refer to the following description in the datasheet (chapter 8.1):

Note that Cypress's SDK only supports the PCM interface in I2S mode. In this mode the frame synchronization signal i.e. PCM_SYNC is used as the Word Select or the LR clock.

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Owen_Zhang123
Moderator
Moderator 500 solutions authored 250 sign-ins 1000 replies posted
Moderator

Please refer to the following description in the datasheet (chapter 8.1):

Note that Cypress's SDK only supports the PCM interface in I2S mode. In this mode the frame synchronization signal i.e. PCM_SYNC is used as the Word Select or the LR clock.

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