SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
The PRU registers R30 and R31 are used to receive, transmit, and control the data for the PRU. As shown in Figure 30-50, the R31 is used to access data in the RX L1 FIFO, the R30 is used to transmit data from the PRU, and the R31 output is used the control the flow of receive and transmit. For more details about these registers, see the following sections.
Figure 30-50 PRU R30, R31 Operations