UART - 3.0 English - PG448

Up to two UART channels are supported. As per the LTPI Specification r 1.2, v 1.0RC3 , the UART TXD signals are sampled three times per frame at the uart_rxd input, while the UART CTS signals are sampled once per frame at the uart_cts input. The reproduced UART TXD signal is generated three times per frame on the uart_txd output, while the RTS signal is reproduced once per frame on the uart_rts output.

The latency and maximum baud rate of the UART, when operating with AMD LTPI IP on both the SCM and HPM side and in absence of active Data Channel:

• The TXD/RTS signal latency is less than five frame periods.
• The maximum baud rate is the rate that is advertised for UART channels, and it depends on the LVDS rate; see the following table.