Needs review
AMBA 4
No structured specs available.
Overview
AMBA 4 is a set of specifications from Arm that introduced interface protocols including ACE (AXI Coherency Extensions), AXI4, AXI4-Lite, ACE-Lite, AXI4-Stream, ATB, APB, and LPI. It addresses high-bandwidth, high-clock-frequency system designs for high-speed interconnect in mobile and consumer applications.
Key features
- ▸Introduced ACE, the AXI Coherency Extensions
- ▸Addresses high-bandwidth, high-clock-frequency system designs
- ▸Suitable for high-speed interconnect in mobile and consumer applications
- ▸ACE adds three channels for cache sharing and barrier support
- ▸ACE-Lite offers I/O or one-way coherency with barrier support
- ▸AXI4 supports burst lengths up to 256 beats and QoS signaling
- ▸AXI4-Lite is a subset for simpler control register interfaces
- ▸AXI4-Stream enables unidirectional data transfers with reduced routing
- ▸ATB extends trace synchronization and signaling
- ▸APB introduces transaction protection and sparse data transfer