NEC uPD78056Y User Manual
Page 449
449
CHAPTER 19 SERIAL INTERFACE CHANNEL 2
Figure 19-6. Baud Rate Generator Control Register Format (2/2)
5-Bit Counter Source Clock Selection
TPS3 TPS2 TPS1 TPS0
n
MCS = 1
MCS = 0
0
0
0
0
f
XX
/2
10
f
XX
/2
10
(4.9 kHz)
f
X
/2
11
(2.4 kHz)
11
0
1
0
1
f
XX
f
X
(5.0 MHz)
f
X
/2
(2.5 MHz)
1
0
1
1
0
f
XX
/2
f
X
/2
(2.5 MHz)
f
X
/2
2
(1.25 MHz)
2
0
1
1
1
f
XX
/2
2
f
X
/2
2
(1.25 MHz)
f
X
/2
3
(625 kHz)
3
1
0
0
0
f
XX
/2
3
f
X
/2
3
(625 kHz)
f
X
/2
4
(313 kHz)
4
1
0
0
1
f
XX
/2
4
f
X
/2
4
(313 kHz)
f
X
/2
5
(156 kHz)
5
1
0
1
0
f
XX
/2
5
f
X
/2
5
(156 kHz)
f
X
/2
6
(78.1 kHz)
6
1
0
1
1
f
XX
/2
6
f
X
/2
6
(78.1 kHz)
f
X
/2
7
(39.1 kHz)
7
1
1
0
0
f
XX
/2
7
f
X
/2
7
(39.1 kHz)
f
X
/2
8
(19.5 kHz)
8
1
1
0
1
f
XX
/2
8
f
X
/2
8
(19.5 kHz)
f
X
/2
9
(9.8 kHz)
9
1
1
1
0
f
XX
/2
9
f
X
/2
9
(9.8 kHz)
f
X
/2
10
(4.9 kHz)
10
Other than above
Setting prohibited
Caution
When data is written to BRGC during a communication operation, baud rate generator output
is disrupted and communication cannot be performed normally. Therefore, data must not
be written to BRGC during a communication operation.
Remarks 1. f
X
:
Main system clock oscillation frequency
2. f
XX
:
Main system clock frequency (f
X
or f
X
/2)
3. MCS :
Oscillation mode selection register (OSMS) bit 0
4. n
:
Value set in TPS0 to TPS3 (1
≤
n
≤
11)
5. Figures in parentheses apply to operation with f
X
= 5.0 MHz