Chapter 6 Clock Description
MPC5606BK Microcontroller Reference Manual, Rev. 2
130
Freescale Semiconductor
6.8.5.6
Measurement Duration Register (CMU_MDR)
Table 6-21. CMU_ISR field descriptions
Field
Description
FHHI
FMPLL clock frequency higher than high reference interrupt.
This bit is set by hardware when f
FMPLL_clk
becomes higher than HFREF value and FMPLL_clk is ON
as signaled by the MC_ME. It can be cleared by software by writing 1.
0 No FHH event.
1 FHH event is pending.
FLLI
FMPLL clock frequency lower than low reference event.
This bit is set by hardware when f
FMPLL_clk
becomes lower than LFREF value and FMPLL_clk is ON
as signaled by the MC_ME. It can be cleared by software by writing 1.
0 No FLL event.
1 FLL event is pending.
OLRI
Oscillator frequency lower than RC frequency event.
This bit is set by hardware when f
FXOSC_clk
is lower than FIRC_clk/2
RCDIV
frequency and FXOSC_clk
is ON as signaled by the MC_ME. It can be cleared by software by writing 1.
0 No OLR event.
1 OLR event is pending.
Offset: 0x18
Access: Read/write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
0
0
0
0
0
0
0
0
0
0
0
MD[19:16]
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
MD[15:0]
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 6-17. Measurement Duration Register (CMU_MDR)
Table 6-22. CMU_MDR field descriptions
Field
Description
MD
Measurement duration bits.
This field shows the measurement duration in numbers of clock cycles of the selected clock source.
This value is loaded in the frequency meter downcounter. When CMU_CSR[SFM] = 1, the
downcounter starts counting.
Summary of Contents for MPC5605BK
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Page 103: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 103 Clocks and power...
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