7.7.5.8 Initialization Sequence

In order to use one DSP, the user must follow the sequence below:

1. Select the input and output triggers. Trigger events (from audio peripherals) must be stable before the configuration/selection in the ASRC.
2. Define the DSP configuration, Channel Transmitting and Receiving modes.
3. Enable the DSP or group of DSPs that will be used (ASRC_MR.ASRCENx=1).
4. Wait for the lock flag of DSPs. If several DSPs share the same holding register, wait for all DSPs lock status.
5. Start the data transfer either by software, or enable the DMA transfers to transmit and receive holding register.
6. ASRC_ESR must read 0.