32.6.4.1.1 Client DMA

When using the I²C client with DMA, an address match will cause the address interrupt flag (INTFLAG.ADDRMATCH) to be raised. After the interrupt has been serviced, data transfer will be performed through DMA.

The I²C client generates the following requests:

• Write data received (RX): The request is set when host write data is received. The request is cleared when DATA is read.
• Read data needed for transmit (TX): The request is set when data is needed for a host read operation. The request is cleared when DATA is written.

When using the DMA with client mode, the client requires the transaction length of data that will be requested by the Host so the DMA can be configured properly.