Renesas RL78/G1H - Page 630

RL78/G1H CHAPTER 18 RF TRANSCEIVER
R01UH0575EJ0120 Rev. 1.20 Page 612 of 920
Dec 22, 2016
Supplemental explanation 1. Special transmit mode
• Preamble part
- Transmits the pattern which is set in the preamble setting register. (1 byte or 2 bytes)
- Repetitively transmits the number of bytes which is set by the number-of-preamble-byte setting bit.
- Transmits the byte length which is set in the preamble setting register.
•SFD part
- Transmits the pattern which is set in the SFD setting register. (1 byte, 2, or 4 bytes)
- Transmits the number of bytes which is set by the number-of-SFD-byte setting bit.
• PHR part
- Transmits the 16-bit data which is set in the mode switch frame transmit register.
Be sure to set bits 0 and 4 of the mode switch frame transmit register to “0”.
- Transmits data regardless of the MODESW bit value.
- Transmits data regardless of the transmit frame length register setting value.
• Transmit data part
- Transmits data which is set in the transmit RAM from the 0200H address.
- Transmits data of the 0200H address again after the transmission of the data of the 02FFH address in the
transmit RAM.
- Generates the bank transmit completion interrupt upon every completion of transmitting the transmit RAM
bank.
• CRC part
- The automatic CRC function does not operate.
- Perform the CRC calculation by using software in order to add the CRC data to the final data part.
• End of transmission
- Terminate the transmission by using the RF communication stop bit.
Be sure to reset by RFRESETB pin after stopping.