Hitachi H8/3637 Hardware Manual page 242

Table 10.9 Typical BRR Settings and Bit Rates (Synchronous Mode)
Bit Rate
(bits/s) n
110 —
250 1
500 1
1K 0
2.5K 0
5K 0
10K 0
25K 0
50K 0
100K —
250K 0
500K
1M
2.5M
Blank: Cannot be set
—: Can be set, but error will result
*: Continuous transmit/receive operation is not possible at this setting
Note: BRR setting values are derived by the following equation.
OSC
N =
8 × 2
2n
B: Bit rate (bits/s)
BRR baud rate generator setting (0 ≤ N ≤ 255)
N:
OSC: Value of ø
n: Baud rate generator input clock number (n = 0, 1, 2, 3)
The meaning of n is shown in table 10.10.
238
2
N n
— —
249 2
124 1
249 1
99 0
49 0
24 0
9 0
4 0
— 0
0* 0
0
× 10
6
– 1
× B
(MHz)
OSC
OSC (MHz)
4
N n
— —
124 2
249 2
124 1
199 1
99 0
49 0
19 0
9 0
4 0
1 0
0* 0
0
8
N n
— —
249 —
124 —
249 —
99 1
199 0
99 0
39 0
19 0
9 —
3 0
1 —
0* —
10
N
—
—
—
—
124
249
124
49
24
—
4
—
—