Renesas RL78/G1H

RL78/G1H CHAPTER 18 RF TRANSCEIVER
R01UH0575EJ0120 Rev. 1.20 Page 619 of 920
Dec 22, 2016
(50) Receive data counter register (BBRXCOUNT)
This register is used to indicate the receive data counter value upon reception. It enables the checking of
how many bytes of receive data are currently stored to the receive RAM. The value is cleared to “0” when
the packet receive ends.
The BBRXCOUNT register consists of 16 bits and can be accessed (serial interface communication) in 8 bit
unit.
Reset signal generation clears this register to 0000H.
Figure 18 - 63 Receive Data Counter Register (BBRXCOUNT) Format
Caution Be sure to clear bits 11 to 15 to “0”.
(51) Transmit frame length register (BBTXFLEN)
This register is used to set the frame length value upon transmission. Set the total value of payload data
length and the CRC length (in 2 or 4 bytes) for the frame length value. Transmits data regardless of the
transmit frame length value when the ACK auto-reply function is enabled to automatically reply with ACK.
The BBTXFLEN register consists of 16 bits and can be accessed (serial interface communication) in 8 bit
unit.
Reset signal generation clears this register to 0000H.
Figure 18 - 64 Transmit Frame Length Register (BBTXFLEN) Format
Caution Be sure to clear bits 11 to 15 to “0”.
Address:
00A3H, 00A2H
After reset:
0000H
R/W
Symbol 15 14 13 12 11 10 9 8
BBRXCO
UNT
0 0 0 0 0 RXCOUNT10 RXCOUNT9 RXCOUNT8
76543210
RXCOUNT7 RXCOUNT6 RXCOUNT5 RXCOUNT4 RXCOUNT3 RXCOUNT2 RXCOUNT1 RXCOUNT0
RXCOUNT[10:0] Receive data counter value
Address:
00A5H, 00A4H
After reset:
0000H
R/W
Symbol 15 14 13 12 11 10 9 8
BBTXFLEN 0 0 0 0 0 TRNFLEN10 TRNFLEN9 TRNFLEN8
76543210
TRNFLEN7 TRNFLEN6 TRNFLEN5 TRNFLEN4 TRNFLEN3 TRNFLEN2 TRNFLEN1 TRNFLEN0
TRNFLEN[10:0] The frame length value upon transmission