Renesas RL78/G1H

RL78/G1H CHAPTER 18 RF TRANSCEIVER
R01UH0575EJ0120 Rev. 1.20 Page 621 of 920
Dec 22, 2016
(54) Symbol rate setting register (BBSYMBLRATE)
This register is used to set the symbol rate. This register consists of 24 bits.
Table 18 - 8 shows the symbol rate setting examples. The symbol rate is set by using the calculation below.
BBSYMBLRATE register is set via serial interface in 8-bit units.
BBSYMBLRATE register is set via serial interface in 8-bit units.
Reset signal generation sets this register to 0000F0H.
Figure 18 - 67 Symbol Rate Setting Register (BBSYMBLRATE) Format
Address: 00AEH to 00ACH After reset: 0000F0H R/W
Symbol 23 22 21 20 19 18 17 16
BBSYMBL
RATE
SYMBLRATE
23
SYMBLRATE
22
SYMBLRATE
21
SYMBLRATE
20
SYMBLRATE
19
SYMBLRATE
18
SYMBLRATE
17
SYMBLRATE
16
15 14 13 12 11 10 9 8
SYMBLRATE
15
SYMBLRATE
14
SYMBLRATE
13
SYMBLRATE
12
SYMBLRATE
11
SYMBLRATE
10
SYMBLRATE
9
SYMBLRATE
8
76543210
SYMBLRATE
7
SYMBLRATE
6
SYMBLRATE
5
SYMBLRATE
4
SYMBLRATE
3
SYMBLRATE
2
SYMBLRATE
1
SYMBLRATE
0
SYMBLRATE[23:0] Symbol rate setting bit value
Table 18 - 8 Symbol Setting Comparison Table
Symbol Rate Setting Bit Value Symbol Rate
000050H 300 ksps
000078H 200 ksps
0000A0H 150 ksps
0000F0H 100 ksps
0001E0H 50 ksps
000258H 40 ksps
0004B0H 20 ksps
000960H 10 ksps
Symbol rate = (f
Xin
/2)/(value of symbol rate setting bits)