CHAPTER 14 SERIAL ARRAY UNIT
Page 423 of 920
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).
Remark 1.
×: Don’t care
Remark 2.
m: Unit number (m = 0, 1), n: Channel number (n = 2, 3), mn = 02, 03, 12, 13, q: UART number (q = 1, 3)
Table 14 - 3 Selection of Operation Clock For UART
SMRmn
Register
SPSm Register
Operation Clock (f
MCK
CKSmn
PRS
m13
PRS
m12
PRS
m11
PRS
m10
PRS
m03
PRS
m02
PRS
m01
PRS
m00
f
CLK
= 32 MHz
0
×
×
×
×
0
0
0
0
f
CLK
32 MHz
×
×
×
×
0
0
0
1
f
CLK
/2
16 MHz
×
×
×
×
0
0
1
0
f
CLK
/2
2
8 MHz
×
×
×
×
0
0
1
1
f
CLK
/2
3
4 MHz
×
×
×
×
0
1
0
0
f
CLK
/2
4
2 MHz
×
×
×
×
0
1
0
1
f
CLK
/2
5
1 MHz
×
×
×
×
0
1
1
0
f
CLK
/2
6
500 kHz
×
×
×
×
0
1
1
1
f
CLK
/2
7
250 kHz
×
×
×
×
1
0
0
0
f
CLK
/2
8
125 kHz
×
×
×
×
1
0
0
1
f
CLK
/2
9
62.5 kHz
×
×
×
×
1
0
1
0
f
CLK
/2
10
31.25 kHz
×
×
×
×
1
0
1
1
f
CLK
/2
11
15.63 kHz
×
×
×
×
1
1
0
0
f
CLK
/2
12
7.81 kHz
×
×
×
×
1
1
0
1
f
CLK
/2
13
3.91 kHz
×
×
×
×
1
1
1
0
f
CLK
/2
14
1.95 kHz
×
×
×
×
1
1
1
1
f
CLK
/2
15
977 Hz
1
0
0
0
0
×
×
×
×
f
CLK
32 MHz
0
0
0
1
×
×
×
×
f
CLK
/2
16 MHz
0
0
1
0
×
×
×
×
f
CLK
/2
2
8 MHz
0
0
1
1
×
×
×
×
f
CLK
/2
3
4 MHz
0
1
0
0
×
×
×
×
f
CLK
/2
4
2 MHz
0
1
0
1
×
×
×
×
f
CLK
/2
5
1 MHz
0
1
1
0
×
×
×
×
f
CLK
/2
6
500 kHz
0
1
1
1
×
×
×
×
f
CLK
/2
7
250 kHz
1
0
0
0
×
×
×
×
f
CLK
/2
8
125 kHz
1
0
0
1
×
×
×
×
f
CLK
/2
9
62.5 kHz
1
0
1
0
×
×
×
×
f
CLK
/2
10
31.25 kHz
1
0
1
1
×
×
×
×
f
CLK
/2
11
15.63 kHz
1
1
0
0
×
×
×
×
f
CLK
/2
12
7.81 kHz
1
1
0
1
×
×
×
×
f
CLK
/2
13
3.91 kHz
1
1
1
0
×
×
×
×
f
CLK
/2
14
1.95 kHz
1
1
1
1
×
×
×
×
f
CLK
/2
15
977 Hz
Содержание RL78/G1H
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