SPRUJ17H March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
The crossbars (referred to as XBAR throughout this chapter) provide flexibility to connect device inputs, outputs, and internal resources in a variety of configurations.
The real time control subsystem contains a total of eight XBARs:
Each of the XBARs is named according to signal destination it routes its inputs. For example, the INPUT XBAR brings external signals "in" to the device. The OUTPUT XBAR takes internal signals "out" of the device to a GPIO. The PWM XBAR takes the signal to the trip inputs of the PWM. Similarly, the Diode Emulation logic synchronous values are routed to the Min Dead-Band logic (MDL) and Illegal Combo logic (ICL) of the PWMs via the MDL XBAR and the ICL XBAR respectively. The INT XBAR routes the large quantity of real-time CONTROLSS interrupts efficiently to the SoC interrupt controller. The DMA XBARs route DMA requests from the real-time CONTROLSS to the SOC EDMA module. Both the INT XBAR and DMA XBAR limit the number of interrupt and DMA requests going from CONTROLSS to the SOC. The PWMSYNCOUTXBAR routes all the PWM synchronous outputs to SoC TIMESYNC logic and to the OUTPUT XBAR.
Further details about each of these XBARs can be found in the following sections.