SLAU723A October 2017 – October 2018 MSP432E401Y , MSP432E411Y
Ethernet MAC Transmit Poll Demand (EMACTXPOLLD)
The MAC Transmit Poll Demand (EMACTXPOLLD) register enables the TX DMA to check whether or not the DMA owns the current descriptor. The Transmit Poll Demand command is given to wake up the TX DMA if it is in the suspend mode. The TX DMA can go into the SUSPEND mode because of an underflow error in a transmitted frame or the unavailability of descriptors owned by it. This Transmit Poll Demand command can be given at any time and the TX DMA resets this command when it again starts fetching the current descriptor from host memory.
EMACTXPOLLD is shown in Figure 15-70 and described in Table 15-80.
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