RI0	AXI3 / AXI4 INTERCONNECT

This course covers the AXI bus protocol, described in ARM AMBA v3 and v4

Objectives This course details first the AXI3 protocol. New signals present in AXI4 are then described. The course explains the AXI4 stream protocol and indicates in which case this simplified protocol is suitable. AXI4-lite protocol is described. The NIC-301 interconnect IP is studied, clarifying synthesis options as well as software QOS parameterizing. AXI Coherency Extensions (ACE) new channels are explained through an overall introduction to snooping. The CCI-400 interconnect IP is described, highlighting the purpose of ACE-lite ports. A more detailed course description is available on request at training@ac6-training.com

Prerequisites Knowledge of an interconnect, such as IBM CoreConnect or ARM AHB is recommended.

FIRST DAY AXI3 PROTOCOL ARM AMBA versions Basic read and write transactions, pipelining, data reordering Global signals, clocking, low power handshake interface Detailing address channel signals Detailing data channel signals Detailing response signals Ordering model Managing exclusive resources AXI4 NEW SIGNALS QoS signalling, defining a per-transaction priority Multiple region signalling AXI4 LITE Simpler control register-style interface Bursts of 1 data beat Conversion, protection and detection AXI4 STREAM Objectives of this new protocol Byte stream example Merging and packing Downsizing / upsizing Packet transfer NIC-301 AXI3 INTERCONNECT TrustZone support Programmable features, QoS Arbitration algorithms Programmer’s model

SECOND DAY INTRODUCTION TO CACHE AND TLB COHERENCY Cache organization Explaining the need for coherency Translation Lookaside Buffer Implementing an I/O MMU AXI COHERENCY EXTENSION Signals added to the traditional 5 channels Explaining what is a shareability domain Using barriers, related ARM instructions The three additional channels ACE new transactions: explaining through sequences their utilization Distributed virtual memory ACE-lite subset CCI-400 AXI4 ACE INTERCONNECT SoC architecture example Implementation in a Big/little system Performance monitoring unit TrustZone support QoS value arbitration and propagation Regulation of outstanding transactions QoS value based on latency measurement

 

Duration	Cost	Calendar
2 days	1880 € HT
Last update: 23 May 2022
This course can be provided either remotely or in our Paris training center or, worldwide, on your premises. Scheduled classes are confirmed as soon as there is a confirmed booking.
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