7.6.12 Write TX Preamble FIFO

Description

The SPI command “Write TX Preamble FIFO” writes n data bytes into the TX support FIFO. The number of data bytes is given in the length parameter. The access direction of the SFIFO is switched automatically and restored to the origin value at the end of the command (direction temporarily stored in the T-bit).

Command Frame

Parameters

• 0x0C – Command ID
• length – Number of bytes to be read from the SFIFO
• data – Data byte 1
• data – Data byte 2
• …
• data – Data byte n

Return Values

• events.system – Event byte (for details see SPI command “Get Event Bytes”)
• events.events – Event byte (for details see SPI command “Get Event Bytes”)
• dummy – Dummy byte (no information)
• dummy – Dummy byte (no information)
• …
• dummy – Dummy byte (no information)