NEC PD78081(A) User Manual page 177

TPS3 TPS2 TPS1 TPS0
0 0 0
0 1 0
0 1 1
0 1 1
1 0 0
1 0 0
1 0 1
1 0 1
1 1 0
1 1 0
1 1 1
Other than above
Caution When a write is performed to BRGC during a communication operation, baud rate
generator output is disrupted and communication cannot be performed normally.
Therefore, BRGC must not be written to during a communication operation.
Remarks 1. f
2. f
3. MCS : Oscillation mode selection register (OSMS) bit 0
4. n
5. Values in parentheses when operated at f
154
CHAPTER 11 SERIAL INTERFACE CHANNEL 2
5-Bit Counter Source Clock Selection
MCS=1
10
0 f /2 f
XX
1 f f
XX
0 f /2 f
XX
2
1 f /2 f
XX
3
0 f /2 f
XX
4
1 f /2 f
XX
5
0 f /2 f
XX
6
1 f /2 f
XX
7
0 f /2 f
XX
8
1 f /2 f
XX
9
0 f /2 f
XX
Setting prohibited
: Main system clock oscillation frequency
X
: Main system clock frequency (f
XX
: Value set in TPS0 to TPS3 (1
10
/2 (4.9 kHz)
X
(5.0 MHz)
X
/2 (2.5 MHz)
X
2
/2 (1.25 MHz)
X
3
/2 (625 kHz)
X
4
/2 (313 kHz)
X
5
/2 (156 kHz)
X
6
/2 (78.1 kHz)
X
7
/2 (39.1 kHz)
X
8
/2 (19.5 kHz)
X
9
/2 (9.8 kHz)
X
or f /2)
X X
n 11)
= 5.0 MHz.
X
MCS=0
11
f /2 (2.4 kHz)
X
f /2 (2.5 MHz)
X
2
f /2 (1.25 MHz)
X
3
f /2 (625 kHz)
X
4
f /2 (313 kHz)
X
5
f /2 (156 kHz)
X
6
f /2 (78.1 kHz)
X
7
f /2 (39.1 kHz)
X
8
f /2 (19.5 kHz)
X
9
f /2 (9.8 kHz)
X
10
f /2 (4.9 kHz)
X
n
11
1
2
3
4
5
6
7
8
9
10