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Discussion Groups | AT91SAM ARM | the priority of PDC?
For users of the Atmel AT91SAM7 and AT91SAM9 ARM CPU chips. Atmel has taken a new direction by combining on chip flash and ram with the ARM CPU on a single die. This provides low cost devices for small systems using the ARM CPU. This group is to exchange information to help users get started and learn how to use the devices.
the priority of PDC? - lonmaker84 - Sep 16 8:30:33 2008
hi,
I am confused with the PDC priority of the PDC transfer request.
According to the AT91SAM7SE512 datasheet, If simutanuous requests of
the same type(receiver or transmitter) occur on identical peripherals,
the priority is determined by the numbering of the peripheral. I swonder
, the prioruty should be higher with a bigger peripheral id? For
example, PDC of US1 should be higher than US0,because the peripheral of
US1 is 7 while US0 is 6.
Best regards,
shef
------------------------------------
(You need to be a member of AT91SAM -- send a blank email to AT91SAM-subscribe@yahoogroups.com )
I am confused with the PDC priority of the PDC transfer request.
According to the AT91SAM7SE512 datasheet, If simutanuous requests of
the same type(receiver or transmitter) occur on identical peripherals,
the priority is determined by the numbering of the peripheral. I swonder
, the prioruty should be higher with a bigger peripheral id? For
example, PDC of US1 should be higher than US0,because the peripheral of
US1 is 7 while US0 is 6.
Best regards,
shef
------------------------------------
(You need to be a member of AT91SAM -- send a blank email to AT91SAM-subscribe@yahoogroups.com )