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AXI bus interface

2015-07-10 15:09:50
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Application background

The ARM Advanced Microcontroller Bus Architecture (AMBA) is an open-standard, on-chip interconnect specification for the connection and management of functional blocks in system-on-a-chip (SoC) designs. It facilitates development of multi-processor designs with large numbers of controllers and peripherals. Since its inception, the scope of AMBA has, despite its name, gone far beyond micro controller devices. Today, AMBA is widely used on a range of ASIC and SoC parts including applications processors used in modern portable mobile devices like smartphones. AMBA is a registered trademark of ARM Ltd.[1]

AMBA was introduced by ARM in 1996. The first AMBA buses were Advanced System Bus (ASB) and Advanced Peripheral Bus (APB). In its second version, AMBA 2, ARM added AMBA High-performance Bus (AHB) that is a single clock-edge protocol. In 2003, ARM introduced the third generation, AMBA 3, including AXI to reach even higher performance interconnect and the Advanced Trace Bus (ATB) as part of the CoreSight on-chip debug and trace solution. In 2010 the AMBA 4 specifications were introduced starting with AMBA 4 AXI4, then in 2011[2] extending system wide coherency with AMBA 4 ACE. In 2013[3] the AMBA 5 CHI (Coherent Hub Interface) specification was introduced, with a re-designed high-speed transport layer and features designed to reduce congestion

Key Technology

The AMBA 4 specification defines following buses/interfaces:

  • AXI Coherency Extensions (ACE) - widely used on the latest ARM Cortex-A processors including Cortex-A7 and Cortex-A15
  • AXI Coherency Extensions Lite (ACE-Lite)
  • Advanced Extensible Interface 4 (AXI4)
  • Advanced Extensible Interface 4 Lite (AXI4-Lite)
  • Advanced Extensible Interface 4 Stream (AXI4-Stream v1.0)
  • Advanced Trace Bus (ATB v1.1)
  • Advanced Peripheral Bus (APB4 v2.0)

AMBA 3 specification defines four buses/interfaces:

  • Advanced Extensible Interface (AXI3 or AXI v1.0) - widely used on ARM Cortex-A processors including Cortex-A9
  • Advanced High-performance Bus Lite (AHB-Lite v1.0)
  • Advanced Peripheral Bus (APB3 v1.0)
  • Advanced Trace Bus (ATB v1.0)

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File list

Tips: You can preview the content of files by clicking file names^_^
Name Size Date
01.96 kB
01.96 kB
axi4lite_vip_user_manual.pdf151.46 kB2012-03-04 09:30
01.96 kB
01.96 kB
file_list.f224.00 B2012-03-01 11:17
01.96 kB
packet.sv7.87 kB2012-03-01 12:11
test.sv5.77 kB2012-03-02 11:33
testbench_top.sv1.71 kB2012-03-02 10:26
01.96 kB
axi4lite_m.sv31.42 kB2012-03-02 14:12
axi4lite_m_if.sv1.97 kB2012-03-02 10:04
axi4lite_s.sv19.37 kB2012-03-02 11:09
axi4lite_s_if.sv1.96 kB2012-03-02 10:07
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