NEC PD703114 User Manual page 471

<4> Baud rate setting example
In an actual system, the output of a prescaler module, etc. is connected to the input clock. Table 10-
8 shows the baud rate generator setting data at this time.
Table 10-8. Baud Rate Generator Setting Data (BRG = f
Target Baud Rate
Synchronous Asynchronous
Mode Mode
4,800 300
9,600 600
19,200 1,200
38,400 2,400
76,800 4,800
153,600 9,600
166,400 10,400
307,200 19,200
614,400 38,400
Not possible 76,800
Not possible 153,600
Target Baud Rate
Synchronous Asynchronous
Mode Mode
4,800 300
9,600 600
19,200 1,200
38,400 2,400
76,800 4,800
153,600 9,600
166,400 10,400
307,200 19,200
614,400 38,400
Not possible 76,800
Not possible 153,600
CHAPTER 10 SERIAL INTERFACE FUNCTION
(a) When f = 32 MHz
XX
Actual Baud Rate
Synchronous Asynchronous
Mode Mode
4,807.692 300.4808
9,615.385 600.9615
19,230.77 1,201.923
38,461.54 2,403.846
76,923.08 4,807.692
153,846.2 9,615.385
166,666.7 10,416.67
307,692.3 19,230.77
615,384.6 38,461.54
−
71,428.57
−
166,666.7
(b) When f = 40 MHz
XX
Actual Baud Rate
Synchronous Asynchronous
Mode Mode
4,882.813 305.1758
9,615.385 600.9615
19,230.77 1,201.923
38,461.54 2,403.846
76,923.08 4,807.692
153,846.2 9,615.385
166,666.7 10,416.67
303,030.3 18,939.39
625,000 39,062.5
−
78,125
−
156,250
User's Manual U15195EJ5V0UD
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XX
BGCSm Bit PRSCM1
(m = 0, 1) Register Setting
Value
3 208
3 104
3 52
3 26
3 13
2 13
1 24
1 13
0 13
0 7
0 3
BGCSm Bit PRSCM1
(m = 0, 1) Register Setting
Value
3 256
3 130
3 65
2 65
1 65
0 65
0 60
0 33
0 16
0 8
0 4
Error
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
−6.99
8.51
Error
1.73
0.16
0.16
0.16
0.16
0.16
0.16
−1.36
1.73
1.73
1.73
471