SPRUJ17H March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
The PRU-ICSS external interface signals are described in Table 7-26. The PRU-ICSS has a large number of available I/O signals. Most of these are multiplexed with other functional signals at the device level.
The PRU-ICSS also support an internal wrapper multiplexing that expands the device top-level multiplexing. This wrapper multiplexing is controlled by the GPCFGx_REG register (where x = 0 or 1) in the PRU-ICSS CFG register space and allows MII_RT, 3 channel Peripheral Interface (with EnDAT capabilities), and Sigma Delta functionality to be muxed with the PRU GPI/O device signals, as shown in Figure 7-16. The PRU-ICSS wrapper multiplexing is described with the device-level signals in Table 7-26. Note that the device top-level muxing has higher priority over the internal PRU-ICSS muxing.
Additionally to PRU-ICSS wrapper multiplexing the device I/O logic maps the PRU-ICSS signals to the different device pins by programming the associated IOMUX CTRLMMR register.