4.3.5 UART and SPI signals

The following tables describe the UART and SPI signals:

Table 4-11 UART signals

Signal Direction Description
UART_RXD Input UART received data
UART_TXD Output UART transmit data

Table 4-12 SPI signals

Signal Direction Description
SPI_MISO Input SPI data in
SPI_SCK Output SPI clock
SPI_MOSI Output SPI data out
SPI_nSS Output SPI device select
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