32.4.5.4 Transmit Buffer Empty

The transmit buffer empty flag (TXBUFE) is set when PERIPH_TCR reaches zero, with PERIPH_TNCR also set to zero, and the last data is written to the peripheral.

This flag is cleared by writing a non-zero value to PERIPH_TCR or PERIPH_TNCR.

DS60001779D

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