Clock Monitor Unit (CMU)
23.4
Memory map and register definition
This section describes in address order all the CMU registers. Each description includes a
standard register diagram with an associated figure number. The CMU memory map is
listed in
Table
Offset (hex)
0000
CMU Control Status Register (CMU_CSR)
0004
CMU Frequency Display Register (CMU_FDR)
0008
CMU High Frequency Reference Register CLKMN1 (CMU_HFREFR)
000C
CMU Low Frequency Reference Register CLKMN1 (CMU_LFREFR)
0010
CMU Interrupt Status Register (CMU_ISR)
0014
Reserved
0018
CMU Measurement Duration Register (CMU_MDR)
Note:
See the "Clocking" chapter for register and field availability details.
23.4.1
Register descriptions
23.4.1.1
CMU Control Status Register (CMU_CSR)
Address: Base + 0000h
0
1
R
0
0
W
Reset
0
0
16
17
R
0
0
W
Reset
0
0
1
Not all CMU blocks utilize this feature. See the "Clocking" chapter for device specific CMU implementation
details.
488/2058
225.
Table 225. CMU memory map
2
3
4
5
0
0
0
0
0
0
0
0
18
19
20
21
0
0
0
0
0
0
0
0
Figure 174. CMU Control Status Register (CMU_CSR)
Register
6
7
8
0
0
0
0
0
0
0
22
23
24
25
0
0
CKSEL11
0
0
0
0
DocID027809 Rev 4
Access: User read/write
9
10
11
12
0
0
0
0
0
0
26
27
28
0
0
0
0
0
0
RM0400
Location
on page 488
on page 489
on page 490
on page 490
on page 491
—
on page 492
13
14
15
0
0
0
0
0
0
29
30
31
RCDIV1
CME
0
0
0
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