
3886 Group User’s Manual
3-57
APPENDIX
3.5 List of registers
Fig. 3.5.13 Structure of Baud rate generator
Fig. 3.5.12 Structure of UART control register
b7 b6b5b4b3b2b1b0
B
Function
At reset
RW
0
1
2
3
4
5
6
7
Name
0
1
UART control register (UARTCON) [Address : 1B16]
Nothing is allocated for these bits. These are write disabled bits.
When these bits are read out, the values are “1”.
UART control register
Character length selection bit
(CHAS)
Parity enable bit
(PARE)
Stop bit length selection bit
(STPS)
Parity selection bit
(PARS)
In output mode
0 : CMOS output
1 : N-channel open-drain output
0 : 8 bits
1 : 7 bits
0 : Parity checking disabled
1 : Parity checking enabled
0 : 1 stop bit
1 : 2 stop bits
0 : Even parity
1 : Odd parity
P45/TxD P-channel output
disable bit (POFF)
1
0
Baud rate generator
b7 b6 b5 b4 b3 b2 b1 b0
B
Function
At reset RW
0
1
2
3
4
5
6
7
?
Baud rate generator (BRG) [Address : 1C16]
Set a count value of baud rate generator.