OX16C950 rev B
OXFORD SEMICONDUCTOR LTD.
Clock
Frequency
(MHz)
CPR value
Effective Error from Max. Baud rate
Max. Baud rate
with CPR = 1,
crystal
frequency
1.8432
1.8432
1.8432
1.8432
1.8417
1.8462
1.8391
1.8433
1.8824
1.8432MHz
with CPR = 1,
TCR = 16
115,200
(%)
0.00
0.00
0.00
0.00
0.08
0.16
0.22
TCR = 4
460,800
1.8432
7.3728
14.7456
18.432
32.000
33.000
40.000
50.000
60.000*
0x08 (1.000)
0x20(4.000)
460,800
921,600
1,843,200
3,686,400
4,608,000
8,000,000
8,250,000
10,000,000
12,500,000
15,000,000
0x80 (8.000)
0x50 (10.000)
0x8B(17.375)
0x8F (17.875)
0xAE (21.750)
0xD9 (27.125)
0xFF (31.875)
1,152,000
2,000,000
2,062,500
2,500,000
3,125,000
3,750,000
0.01
2.13
Table 17: Example clock options and their assosiacted maximum baud rates
Sampling TCR
Clock Value
System Clock (MHz)
1.8432
7.372
14.7456
18.432
32
2.00M
40
50
60
3.75M
4.00M
16
15
14
13
12
11
10
9
0x00 115,200
0x0F 122,880
0x0E 131,657
0x0D 141,785
0x0C 153,600
0x0B 167,564
0x0A 184,320
0x09 204,800
0x08 230,400
460,750 921,600
1.152M
2.50M 3.125M
491,467 983,040 1,228,800 2,133,333 2,666,667 3,333,333
526,571 1,053,257 1,316,571 2,285,714 2,857,143 3,571,429 4,285,714
567,077 1,134,277 1,417,846 2,461,538 3,076,923 3,846,154 4,615,384
614,333 1,228,800 1,536,000 2,666,667 3,333,333 4,166,667
670,182 1,340,509 1,675,636 2,909,091 3,636,364 4,545,455 5,454545
737,200 1,474,560 1,843,200 3.20M 4.00M 5.00M 6.00M
819,111 1,638,400 2,048,000 3,555,556 4,444,444 5,555,556 6,666,667
921,500 1,843,200 2,304,000 4.00M 5.00M 6.25M 7.50M
5.00M
8
7
0x07 263,314 1,053,143 2,106,514 2,633,143 4,571,429 5,714,286 7,142,857 8,571428
0x06 307,200 1,228,667 2,457,600 3,072,000 5,333,333 6,666,667 8,333,333 10.00M
6
5
0x05 368,640 1,474,400 2,949,120 3,686,400
0x04 460,800 1,843,000 3,686,400 4,608,000
6.40M
8.00M 10.00M 12.00M
4
8.00M 10.00M 12.50M 15.00M
Table 18: Maximum Baud Rates Available at all ‘TCR’ Sampling Clock Values
Data Sheet Revision 1.2
Page 32
OXFORD [ OXFORD SEMICONDUCTOR ]
