HD6417034 Datasheet, PDF (404/691 Pages) Renesas Technology Corp – SuperH RISC ENGINE SH7032 AND SH7034

Table 13.4 Bit Rates and BRR Settings in Synchronous Mode
φ (MHz)
Bit Rate
2
(bits/s) n
N
4
n
N
8
n
N
10
n
N
110
3
70 — — — — — —
250
2
124 2
249 3
124 — —
500
1
249 2
124 2
249 — —
1k
1
124 1
249 2
124 — —
2.5k
0
199 1
99 1
199 1
249
5k
0
99 0
199 1
99 1
124
10k
0
49 0
99 0
199 0
249
25k
0
19 0
39 0
79 0
99
50k
0
9
0
19 0
39 0
49
100k
0
4
0
9
0
19 0
24
250k
0
1
0
3
0
7
0
9
500k
0
0* 0
1
0
3
0
4
1M
0
0* 0
1
——
2.5M
— —0
0*
5M
Blank: No setting available
—: Setting possible, but error occurs
*: Continuous transmission/reception not possible
16
n
N
——
3
249
3
124
2
249
2
99
1
199
1
99
0
159
0
79
0
39
0
15
0
7
0
3
——
——
20
n
N
——
——
——
——
2
124
1
249
1
124
0
199
0
99
0
49
0
19
0
9
0
4
0
1
0
0*
The BRR setting is calculated as follows:
Asynchronous mode
N = [φ/(64 × 2^{2n – 1} × B)] × 10⁶ – 1
Synchronous mode
N = [φ/(8 × 2^{2n – 1} × B)] × 10⁶ – 1
B: Bit rate (bits/s)
N: BRR setting for baud rate generator (0 ≤ N ≤ 255)
φ: φ frequency (MHz)
n: Baud rate generator clock source (n = 0, 1, 2, 3)
For the clock sources and values of n, see following table.
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