AMBA® 3 AHB-Lite Protocol

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Presentation transcript:

AMBA® 3 AHB-Lite Protocol Peiyuan Wang

AHB-Lite block diagram

READ

WRITE

Transfer types HTRANS[1:0] b00 IDLE Indicates that no data transfer is required. A master uses an IDLE transfer when it does not want to perform a data transfer. b01 BUSY The BUSY transfer type enables masters to insert idle cycles in the middle of a burst. This transfer type indicates that the master is continuing with a burst but the next transfer cannot take place immediately. b10 NONSEQ Indicates a single transfer or the first transfer of a burst. The address and control signals are unrelated to the previous transfer. b11 SEQ The remaining transfers in a burst are SEQUENTIAL and the address is related to the previous transfer.

Transfer type examples