Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Fiche De Données

505

SAM4E [DATASHEET]

Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14

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0 (CHUNK): The Master Interface Arbiter is locked by the channel x for a chunk transfer.

1 (BUFFER): The Master Interface Arbiter is locked by the channel x for a buffer transfer.

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AHB_PROT field provides additional information about a bus access and is primarily used to implement some level of 
protection.



1

Data access

AHB_PROT[0]

0: User Access

1: Privileged Access

AHB_PROT[1]

0: Not Bufferable

1: Bufferable

AHB_PROT[2]

0: Not cacheable

1: Cacheable

00

ALAP_CFG

The largest defined length AHB burst is performed on the destination AHB interface.

01

HALF_CFG

When half FIFO size is available/filled, a source/destination request is serviced.

10

ASAP_CFG

When there is enough space/data available to perform a single AHB access, then the 
request is serviced.