Settings, 1 how do i set an output terminal (monclk), 2 how do i select an output frequency – FUJITSU MB91460 SERIES FR60 User Manual
Page 962: 3 how do i enable/disable clock monitor output, Q&a 7.1 how do i set an output terminal (monclk)

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Chapter 48 Clock Monitor
6.Settings
6. Settings
*:For each setting procedure, refer to an appropriate section.
7. Q&A
7.1 How do I set an output terminal (MONCLK)?
Use the Clock Monitor Selection bits (CMCFG.CMSEL[3:0])
7.2 How do I select an output frequency?
Use the Output Frequency Select bit (CMCFG.CMPRE[3:0]).
7.3 How do I enable/disable clock monitor output?
Use the Output Enable bit (CMCFG.CMSEL[3:0]).
Table 6-1 Settings for Using Clock Monitor
Settings
Setting Registers
Setting
Procedure*
Set a prescaler value
Clock Monitor Prescaler
(CMCFG.CMPRE[3:0])
See
7.1
Set a source clock
Clock Monitor Selection
(CMCFG.CMSEL[3:0])
See
7.1
Change the mark level
Clock Monitor Inverter
(CSCFG.MONCKI)
See
7.1
Enable clock monitor output.(MONCLK)
Clock Monitor Selection
(CMCFG.CMSEL[3:0])
See
7.2
See
7.3
Operation
CMCFG.CMSEL[3:0]
To set an output terminal (MONCLK)
Set to the appropriate clock (!= “0000”)
Clock Division
Ratio
Output Frequency (Example)
Frequency Prescaler
(CMCFG.CMPRE[3:0])
CLKP=32MHz
CLKP=40MHz
1/2
16.0 MHz
20.0 MHz
Set to “0001”.
1/3
10.7 MHz
13.3 MHz
Set to “0010”.
1/4
8.0 MHz
10.0 MHz
Set to “0011”.
1/8
4.0 MHz
5.0 MHz
Set to “0111”.
1/15
2.1 MHz
2.7 MHz
Set to “1110”.
1/16
2.0 MHz
2.5 MHz
Set to “1111”.
Operation
Output Enable Bit (CMCFG.CMSEL[3:0])
To disable clock monitor output
(To set the terminal to the Hi-z status)
Set to “0000”.
Enable clock monitor output.
Set to “0001”-”1111”.