XC886/888CLM
Serial Interfaces
User’s Manual
12-17
V1.3, 2010-02
Serial Interfaces, V 1.0
Note: Bits BRDIS and BGSEL are used only in UART module and not in UART1 module.
Therefore, they should always be written with 0 in the BCON register in UART1
module. Setting them to 1 in the UART1 register has no effect.
BRDIS
4
rw
Break/Synch Detection Disable
0
Break/Synch detection is enabled.
1
Break/Synch detection is disabled.
BGSEL
[7:6]
rw
Baud Rate Select for Detection
For different values of BGSEL, the baud rate range
for detection is defined by the following formula:
f
PCLK
/(2184*2^BGSEL)< baud rate range<
f
PCLK
/(72*2^BGSEL)
where BGSEL =00
B
, 01
B
, 10
B
, 11
B
.
See
for bit field BGSEL definition for
different input frequencies.
0
5
r
Reserved
Returns 0 if read; should be written with 0.
Table 12-4
BGSEL Bit Field Definition for Different Input Frequencies
f
PCLK
BGSEL
Baud Rate Select for Detection
f
PCLK
/(2184*2^BGSEL) to
f
PCLK
/(72*2^BGSEL)
24 MHz
00
B
11 kHz to 333.3 kHz
01
B
5.5 kHz to 166.6 kHz
10
B
2.8 kHz to 83.3 kHz
11
B
1.4 kHz to 41.6 kHz
12 MHz
00
B
5.5 kHz to 166.6 kHz
01
B
2.8 kHz to 83.3 kHz
10
B
1.4 kHz to 41.6 kHz
11
B
0.7 kHz to 20.8 kHz
2 MHz
00
B
0.92 kHz to 27.7 kHz
01
B
0.46 kHz to 13.8 kHz
10
B
0.23 kHz to 6.9 kHz
11
B
0.12 kHz to 3.4 kHz
Field
Bits
Type Description
*
Содержание XC886CLM
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