Table of Contents
Advertisement
SMRmn Register
CKSmn
0
1
Notes 1. When changing the clock selected for f
2. SAU can be operated at a fixed division ratio of the subsystem clock, regardless of the f
Remarks 1.
446
CHAPTER 11 SERIAL ARRAY UNIT
Table 11-3 Operating Clock Selection
PRS
PRS
PRS
m13
m12
m11
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
1
Other than above
(CKC) value), do so after having stopped (STm = 000FH) the operation of the serial array
unit (SAU). When selecting INTTM02 and INTTM03 for the operation clock, also stop the
timer array unit (TAU) (TT0 = 00FFH).
frequency (main system clock, subsystem clock), by operating the interval timer for which
f
/4 has been selected as the count clock (setting TIS02 (if m = 0) or TIS03 (if m = 1) of
SUB
the TIS0 register to 1) and selecting INTTM02 and INTTM03 by using the SPSm register in
channels 2 and 3 of TAU. When changing f
described in Note 1 above.
X: Don't care
2. m: Unit number (m = 0, 1), n: Channel number (n = 0 to 3), mn = 00 to 03, 12, 13
User's Manual U17854EJ9V0UD
SPSm Register
PRS
PRS
PRS
PRS
m10
m03
m02
m01
X
0
0
0
X
0
0
0
X
0
0
1
X
0
0
1
X
0
1
0
X
0
1
0
X
0
1
1
X
0
1
1
X
1
0
0
X
1
0
0
X
1
0
1
X
1
0
1
X
1
1
1
0
X
X
X
1
X
X
X
0
X
X
X
1
X
X
X
0
X
X
X
1
X
X
X
0
X
X
X
1
X
X
X
0
X
X
X
1
X
X
X
0
X
X
X
1
X
X
X
1
X
X
X
(by changing the system clock control register
CLK
, however, SAU and TAU must be stopped as
CLK
Operation Clock (MCK)
PRS
f
= 20 MHz
CLK
m00
0
f
20 MHz
CLK
1
f
/2
10 MHz
CLK
2
0
f
/2
5 MHz
CLK
3
1
f
/2
2.5 MHz
CLK
4
0
f
/2
1.25 MHz
CLK
5
1
f
/2
625 kHz
CLK
6
0
f
/2
313 kHz
CLK
7
1
f
/2
156 kHz
CLK
8
0
f
/2
78.1 kHz
CLK
9
1
f
/2
39.1 kHz
CLK
10
0
f
/2
19.5 kHz
CLK
11
1
f
/2
9.77 kHz
CLK
If m = 0: INTTM02,
1
Note 2
if m = 1: INTTM03
X
f
20 MHz
CLK
X
f
/2
10 MHz
CLK
2
X
f
/2
5 MHz
CLK
3
X
f
/2
2.5 MHz
CLK
4
X
f
/2
1.25 MHz
CLK
5
X
f
/2
625 kHz
CLK
6
X
f
/2
313 kHz
CLK
7
X
f
/2
156 kHz
CLK
8
X
f
/2
78.1 kHz
CLK
9
X
f
/2
39.1 kHz
CLK
10
X
f
/2
19.5 kHz
CLK
11
X
f
/2
9.77 kHz
CLK
X
If m = 0: INTTM02,
Note 2
if m = 1: INTTM03
Setting prohibited
Note 1
CLK
Advertisement
Table of Contents
