ZHCSJU4I November 2006 – September 2018 CC1020
PRODUCTION DATA.
The data rate (baud rate) is programmable and depends on the crystal frequency and the programming of the CLOCK (CLOCK_A and CLOCK_B) registers.
The baud rate (B.R.) is given by Equation 1.
Where:
DIV1 and DIV2 are given by the value of MCLK_DIV1 and MCLK_DIV2.
Table 5-4 shows some possible data rates as a function of crystal frequency in synchronous mode. In asynchronous transparent UART mode any data rate up to 153.6 kBaud can be used.
MCLK_DIV2[1:0] | DIV2 |
---|---|
00 | 1 |
01 | 2 |
10 | 4 |
11 | 8 |
MCLK_DIV1[2:0] | DIV1 |
---|---|
000 | 2.5 |
001 | 3 |
010 | 4 |
011 | 7.5 |
100 | 12.5 |
101 | 40 |
110 | 48 |
111 | 64 |
DATA RATE
[kBaud] |
CRYSTAL FREQUENCY [MHz] | ||||||
---|---|---|---|---|---|---|---|
4.9152 | 7.3728 | 9.8304 | 12.288 | 14.7456 | 17.2032 | 19.6608 | |
0.45 | X | X | |||||
0.5 | X | ||||||
0.6 | X | X | X | X | X | X | X |
0.9 | X | X | |||||
1 | X | ||||||
1.2 | X | X | X | X | X | X | X |
1.8 | X | X | |||||
2 | X | ||||||
2.4 | X | X | X | X | X | X | X |
3.6 | X | X | |||||
4 | X | ||||||
4.096 | X | X | |||||
4.8 | X | X | X | X | X | X | X |
7.2 | X | X | |||||
8 | X | ||||||
8.192 | X | X | |||||
9.6 | X | X | X | X | X | X | X |
14.4 | X | X | |||||
16 | X | ||||||
16.384 | X | X | |||||
19.2 | X | X | X | X | X | X | X |
28.8 | X | X | |||||
32 | X | ||||||
32.768 | X | X | |||||
38.4 | X | X | X | X | X | X | X |
57.6 | X | X | |||||
64 | X | ||||||
65.536 | X | ||||||
76.8 | X | X | X | X | X | X | X |
115.2 | X | X | |||||
128 | X | ||||||
153.6 | X | X | X | X | X |