Transmit poll demand register
TPD | Transmit poll demand This register field can be read by the application, and when a write operation is performed with any data value, an event is triggered. When these bits are written with any value, the DMA reads the current descriptor pointed to by the Current Host Transmit Descriptor register (Section 26.6.37). If that descriptor is not available (owned by Host), transmission returns to the Suspend state and bit 2 in the DMA_STAT Register is asserted. If the descriptor is available, transmission resumes. |