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UART FIFO DMA Mode

Question asked by Hai Maio on Sep 23, 2019
Latest reply on Sep 29, 2019 by xiangjun.rong

In the specification, the possible values for the DMA Mode are not listed, as for example for FIFO enable 0/1. Is this an error in the specification, or it is a way to say something not written ? How do you interpret the missing values? and the DMA Mode description?

 

"UARTn FIFO Control Register

Bit    Symbol

0       FIFO Enable           0/1  Active high enable for both UARTn Rx and TX FIFOs and UnFCR[7:1] access.
                                               This bit must be set for proper UART operation. Any transition on this bit will
                                               automatically clear the related UART FIFOs.

3       DMA Mode                   When the FIFO enable bit (bit 0 of this register) is set, this bit selects the DMA
                                               mode

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