ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 287 -
Revision 2.4
Table 5-115 UART Baud Rate Equation
Mode
BAUDM1
BAUDM0
EDIVM1[3:0] BRD[15:0] Baud Rate Equation
0
0
0
B
A
UART_CLK / [16 * (A+2)]
1
1
0
B
A
UART_CLK / [(B+1) * (A+2)] , B
≥
8
2
1
1
Don’t care
A
UART_CLK / (A+2), A
≥
3
Table 5-116 UART Baud Rate Setting Table
System Clock = 49.152MHz
Baud rate
Mode0
%err
Mode1
%err
Mode2
%err
921600
x
A=4,B=8
1.2
A=51
-0.6
460800
x
A=10,B=8
1.2
A=104
0.3
230400
x
A=22,B=8
A=7,B=11
1.2
1.2
A=211
-0.2
115200
A=25
1.2
A=37,B=10
A=31,B=12
0.5
0.5
A=425
0.1
57600
A=51
-0.6
A=59,B=13
A=93,B=8
0.1
0.2
A=851
0.0
38400
A=78
0.0
A=126,B=9
A=78,B=15
0.0
0.0
A=1278
0.0
19200
A=158
0.0
A=254,B=9
A=158,B=15
0.0
0.0
A=2558
0.0
9600
A=318
0.0
A=510,B=9
A=318,B=15
0.0
0.0
A=5118
0.0
4800
A=638
0.0
A=1022,B=9
A=638,B=15
0.0
0.0
A=10238
0.0