30.5.1.2 Modes of DAC data buffer operationThe following table describes the different modes of data buffer operation for the DACmodule.Table 30-23. Modes of DAC data buffer operationModes DescriptionBuffer Normal modeThis is the default mode. The buffer works as a circular buffer.The read pointer increases by one, every time the triggeroccurs. When the read pointer reaches the upper limit, it goesto 0 directly in the next trigger event.Buffer One-time Scan modeThe read pointer increases by 1 every time the trigger occurs.When it reaches the upper limit, it stops there. If read pointeris reset to the address other than the upper limit, it willincrease to the upper address and stop there again.NOTE: If the software set the read pointer to the upper limit,the read pointer will not advance in this mode.30.5.2 DMA operationWhen DMA is enabled, DMA requests are generated instead of interrupt requests. TheDMA Done signal clears the DMA request.The status register flags are still set and are cleared automatically when the DMAcompletes.30.5.3 ResetsDuring reset, the DAC is configured in the default mode and is disabled.30.5.4 Low-Power mode operationThe following table shows the wait mode and the stop mode operation of the DACmodule.Table 30-24. Modes of operationModes of operation DescriptionWait mode The DAC will operate normally, if enabled.Table continues on the next page...Functional descriptionKL25 Sub-Family Reference Manual, Rev. 3, September 2012544 Freescale Semiconductor, Inc.
