CHAPTER 14 SERIAL ARRAY UNIT
Page 334 of 920
Figure 14 - 5 Format of Serial clock select register m (SPSm)
Note
When changing the clock selected for f
CLK
(by changing the system clock control register (CKC) value), do so
after having stopped (serial channel stop register m (STm) = 000FH) the operation of the serial array unit
(SAU).
Caution
Be sure to clear bits 15 to 8 to “0”.
Remark 1.
f
CLK
: CPU/peripheral hardware clock frequency
Remark 2.
k = 0, 1
Address: F0126H, F0127H (SPS0), F0166H, F0167H (SPS1)
After reset: 0000H
Symbol
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
SPSm
0
0
0
0
0
0
0
0
PRS
m13
PRS
m12
PRS
m11
PRS
m10
PRS
m03
PRS
m02
PRS
m01
PRS
m00
PRS
mk3
PRS
mk2
PRS
mk1
PRS
mk0
Section of operation clock (CKmk)
f
CLK
=
2 MHz
f
CLK
=
5 MHz
f
CLK
=
10 MHz
f
CLK
=
20 MHz
f
CLK
=
32 MHz
0
0
0
0
f
CLK
2 MHz
5 MHz
10 MHz
20 MHz
32 MHz
0
0
0
1
f
CLK
/2
1 MHz
2.5 MHz
5 MHz
10 MHz
16 MHz
0
0
1
0
f
CLK
/2
2
500 kHz
1.25 MHz
2.5 MHz
5 MHz
8 MHz
0
0
1
1
f
CLK
/2
3
250 kHz
625 kHz
1.25 MHz
2.5 MHz
4 MHz
0
1
0
0
f
CLK
/2
4
125 kHz
313 kHz
625 kHz
1.25 MHz
2 MHz
0
1
0
1
f
CLK
/2
5
62.5 kHz
156 kHz
313 kHz
625 kHz
1 MHz
0
1
1
0
f
CLK
/2
6
31.3 kHz
78.1 kHz
156 kHz
313 kHz
500 kHz
0
1
1
1
f
CLK
/2
7
15.6 kHz
39.1 kHz
78.1 kHz
156 kHz
250 kHz
1
0
0
0
f
CLK
/2
8
7.81 kHz
19.5 kHz
39.1 kHz
78.1 kHz
125 kHz
1
0
0
1
f
CLK
/2
9
3.91 kHz
9.77 kHz
19.5 kHz
39.1 kHz
62.5 kHz
1
0
1
0
f
CLK
/2
10
1.95 kHz
4.88 kHz
9.77 kHz
19.5 kHz
31.3 kHz
1
0
1
1
f
CLK
/2
11
977 Hz
2.44 kHz
4.88 kHz
9.77 kHz
15.6 kHz
1
1
0
0
f
CLK
/2
12
488 Hz
1.22 kHz
2.44 kHz
4.88 kHz
7.8 kHz
1
1
0
1
f
CLK
/2
13
244 Hz
610 Hz
1.22 kHz
2.44 kHz
3.9 kHz
1
1
1
0
f
CLK
/2
14
122 Hz
305 Hz
610 Hz
1.22 kHz
1.95 kHz
1
1
1
1
f
CLK
/2
15
61 Hz
153 Hz
305 Hz
610 Hz
977 Hz
Содержание RL78/G1H
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