SAM3N00B Atmel Corporation, SAM3N00B Datasheet - Page 349
SAM3N00B
Manufacturer Part Number
SAM3N00B
Description
Manufacturer
Atmel Corporation
- Current page: 349 of 752
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SAM3N
Once the PMC_PCKx register has been programmed, The corresponding Programmable
clock must be enabled and the user is constrained to wait for the PCKRDYx bit to be set in
the PMC_SR register. This can be done either by polling the status register or by waiting the
interrupt line to be raised if the associated interrupt to PCKRDYx has been enabled in the
PMC_IER register. All parameters in PMC_PCKx can be programmed in a single write
operation.
If the CSS and PRES parameters are to be modified, the corresponding Programmable
clock must be disabled first. The parameters can then be modified. Once this has been
done, the user must re-enable the Programmable clock and wait for the PCKRDYx bit to be
set.
6. Enabling Peripheral Clocks
Once all of the previous steps have been completed, the peripheral clocks can be enabled
and/or disabled v ia registers PMC_PCER0, PMC _PCER1, PMC _PCDR0 and
PMC_PCDR1.
349
11011A–ATARM–04-Oct-10
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