AMBA High-performance Bus
- AMBA High-performance Bus
AHB (Advanced High-performance Bus) is a bus protocol introduced in AMBA Specification version 2 published by ARM Ltd company.In addition to previous release, it has the following features:
* single edge clock protocol
* split transactions
* several bus masters
* burst transfers
* pipelined operations
* single-cycle bus master handover
* non-tristate implementation
* large bus-widths (64/128 bit)
A simple transaction on the AHB consists of an address phase and a subsequent data phase (without wait states: only two bus-cycles). Access to the target device is controlled through a MUX (non-tristate), thereby admitting bus-access to one bus-master at a time.
External links
* [http://www.opencores.org/projects.cgi/web/ahb2wishbone/overview AHB To Wishbone project page] - AHB to Wishbone bridge
* [http://www.arm.com/support/AMBA.html AMBA FAQ] - from ARM
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