HD6473837H Datasheet, PDF (282/562 Pages) Renesas Technology Corp – Hardware Manual

Table 10.11 shows typical BRR settings in synchronous mode. Values in table 10.11 are for active
(high-speed) mode.
Table 10.11 Typical BRR Settings and Bit Rates (Synchronous Mode)
OSC (MHz)
Bit Rate
2
(bits/s) n
N
4
n
N
8
n
N
110
—
—
—
—
—
—
250
1
249
2
124
2
249
500
1
124
1
249
2
124
1K
0
249
1
124
1
249
2.5K
0
99
0
199
1
99
5K
0
49
0
99
0
199
10K
0
24
0
49
0
99
25K
0
9
0
19
0
39
50K
0
4
0
9
0
19
100K
—
—
0
4
0
9
250K
0
0*
0
1
0
3
500K
0
0*
0
1
1M
0
0*
2.5M
Note: Blank: Cannot be set
—: Can be set, but error will result
*: Continuous transfer not possible at this setting
10
n
N
—
—
—
—
—
—
—
—
1
124
0
249
0
124
0
49
0
24
—
—
0
4
—
—
—
—
BRR setting values are derived by the following equation.
N=
OSC
8 × 2²ⁿ × B
× 10⁶ – 1
B: Bit rate (bits/s)
N: BRR baud rate generator setting (0 ≤ N ≤ 255)
OSC: Value of φ_OSC (MHz)
n: Baud rate generator input clock number (n = 0, 1, 2, 3)
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