TMP91C824
91C824-128
2008-02-20
Table 3.9.3 Transfer Rate Selection
(when baud rate generator Is used and BR0CR<BR0ADDE>
=
0)
Unit (kbps)
fc [MHz]
Input Clock
Frequency Divider
(set to BR1CR<BR1S3:0>)
φ
T0
φ
T2
φ
T8
φ
T32
9.830400 2 76.800
19.200
4.800
1.200
↑
4
38.400 9.600 2.400 0.600
↑
8
19.200 4.800 1.200 0.300
↑
0
9.600 2.400 0.600 0.150
12.288000
5
38.400 9.600 2.400 0.600
↑
A
19.200 4.800 1.200 0.300
14.745600 2 115.200
28.800
7.200
1.800
↑
3 76.800
19.200
4.800
1.200
↑
6
38.400 9.600 2.400 0.600
↑
C
19.200 4.800 1.200 0.300
19.6608 1
307.200
76.800
19.200
4.800
↑
2 153.600
38.400
9.600
2.400
↑
4 76.800
19.200
4.800
1.200
↑
8
38.400 9.600 2.400 0.600
↑
10
19.200 4.800 1.200 0.300
22.1184 3
115.200
28.800
7.200
1.800
24.576 1
384.000
96.000
24.000
6.000
↑
2 192.000
48.000
12.000
3.000
↑
4 96.000
24.000
6.000
1.500
↑
5 76.800
19.200
4.800
1.200
↑
8 48.000
12.000
3.000
0.750
↑
A
38.400 9.600 2.400 0.600
↑
10
24.000 6.000 1.500 0.375
27.0336
B
38.400 9.600 2.400 0.600
29.4912 1
460.800
115.200
28.800
7.200
↑
3 153.600
38.400
9.600
2.400
↑
4 115.200
28.800
7.200
1.800
↑
6 76.800
19.200
4.800
1.200
↑
9 51.200
12.800
3.200
0.800
↑
C
38.400 9.600 2.400 0.600
↑
F
30.720 7.680 1.920 0.480
↑
10
28.800 7.200 1.800 0.450
31.9488
D
38.400 9.600 2.400 0.600
Note 1: Transfer rates in I/O interface mode are eight times faster than the values given above.
Note 2: The values in this table are calculated for when fc is selected as the system clock, the clock
gear is set for fc/1 and the system clock is the prescaler clock input f
FPH
.
Timer out clock (TA0TRG) can be used for source clock of UART mode only.
Calculation method the frequency of TA0TRG
Frequency of TA0TRG
=
Baud
rate
×
16
Note 1:The TMRA0 match detects signal cannot be used as the transfer clock in I/O interface mode.