To configure the TX DMA for operation the software must do the following:
- Initialize the TX_HDP registers to 0.
- Enable the desired transmit interrupts in the CPDMA_TX_INTMASK_SET register.
- Setup the transmit channel(s) buffer descriptors in host memory as defined in CPPI.
- Configure and enable the transmit operation as desired in the CPDMA_TX_CONTROL register.
- Write the appropriate TX_HDP registers with the appropriate values to start transmit operations.