W83977ATF Datasheet, PDF (69/207 Pages) Winbond – WINBOND I/O

W83977ATF
PRELIMINARY
3.2.9 User-defined Register (UDR) (Read/Write)
This is a temporary register that can be accessed and defined by the user.
TABLE 3-5 BAUD RATE TABLE
Pre-Div: 13
1.8461M Hz
50
75
110
134.5
150
300
600
1200
1800
2000
2400
3600
4800
7200
9600
19200
38400
57600
115200
BAUD RATE FROM DIFFERENT PRE-DIVIDER
Pre-Div:1.625 Pre-Div: 1.0
14.769M Hz
24M Hz
Decimal divisor used
to generate 16X
clock
Error Percentage between
desired and actual
400
650
2304
**
600
975
1536
**
880
1430
1047
0.18%
1076
1478.5
857
0.099%
1200
1950
768
**
2400
3900
384
**
4800
7800
192
**
9600
15600
96
**
14400
23400
64
**
16000
26000
58
0.53%
19200
31200
48
**
28800
46800
32
**
38400
62400
24
**
57600
93600
16
**
76800
124800
12
**
153600
249600
6
**
307200
499200
3
**
460800
748800
2
**
921600
1497600
1
**
** The percentage error for all baud rates, except where indicated otherwise, is 0.16%.
Note. Pre-Divisor is determined by CRF0 of UART A and B.
Publication Release Date: April 1998
-50 -
Revision 0.52