W83877ATF Datasheet, PDF (52/191 Pages) Winbond – enhanced version from Winbonds most popular I/O chip W83877F

W83877ATF
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
BAUD RATE USING 24 MHZ TO GENERATE 1.8461 MHZ
Desired Baud Rate
Decimal divisor used to
generate 16X clock
Percent error difference between
desired and actual
50
2304
**
75
1536
**
110
1047
0.18%
134.5
857
0.099%
150
768
**
300
384
**
600
192
**
1200
96
**
1800
64
**
2000
58
0.53%
2400
48
**
3600
32
**
4800
24
**
7200
16
**
9600
12
**
19200
6
**
38400
3
**
57600
2
**
115200
1
**
230400
4 ^{Note 1}
**
460800
2 ^{Note 1}
**
921600
1 ^{Note 1}
**
1.5M
1 ^{Note 2}
0%
Note 1: Only use in high speed mode, when FASTA/FASTB bits are set (refer to CR19 bit1 and CR19 bit0).
Note 2: Only use in high speed mode, when TURA/TURB bits are set (refer to CR0C bit7 and bit6).
** The percentage error for all baud rates, except where indicated otherwise, is 0.16%
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Publication Release Date: April 1998
Version 0.51