Transmit and Receive Messages

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

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2.4 English

A separate storage buffers exist for transmit (TXFIFO) and receive (RXFIFO) messages through a FIFO structure. Each buffer can store up to 64 messages. Once a message is written into the TXFIFO, the total delay to transmit it over the CAN bus is
2 x (TX driver delay + propagation delay + RX driver delay).