Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Fiche De Données
Codes de produits
ATSAM4E-XPRO
593
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
Once PMC_PCKx register has been configured, 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. This can be done either by
polling PCKRDYx in PMC_SR or by waiting for the interrupt line to be raised if the associated interrupt
source (PCKRDYx) has been enabled in PMC_IER. All parameters in PMC_PCKx can be programmed in a
single write operation.
and the user is constrained to wait for the PCKRDYx bit to be set in the PMC_SR. This can be done either by
polling PCKRDYx in PMC_SR or by waiting for the interrupt line to be raised if the associated interrupt
source (PCKRDYx) has been enabled in PMC_IER. 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.
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.
9.
Enable the peripheral clocks
Once all of the previous steps have been completed, the peripheral clocks can be enabled and/or disabled
via registers PMC_PCER0, PMC_PCER, PMC_PCDR0 and PMC_PCDR.
via registers PMC_PCER0, PMC_PCER, PMC_PCDR0 and PMC_PCDR.