SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
The PRU registers R30 and R31 are used to receive, transmit, and control the data for the PRU. As shown in Figure 6-239, 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.