• AMBA 5 CHI Link Layer (L-Credit Return)

    IPDeveloper
    IPDeveloper

    Is it possible for a CHI Node to receive an L-Credit Return when in RUN State? 

    • 1 month ago
    • System
    • SoC Design forum
  • AMBA AHB5 : Stable Between Clock Question

    Swetha
    Swetha

    Hi All,

    I have a question on AMBA5 AHB feature : Stable_between_Clock property

    The AMBA5 AHB Specification describes:

    Signals that are described as being stable are required to remain at the same value when sampled at different rising clock edges in an…

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • About AHB5 protection control signals

    Santosh Matagar
    Santosh Matagar

    In AHB5, we have extended memory bits as [6:4] hprot. Previously we have [3:0] hprot. For implementation purpose, i treated [6:4] as a separate signal. This separate signal am qualifying based on some filter, just because not to consider for older AHB…

    • over 4 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • AHB amba 5 lite - waited write transfer

    michaels
    michaels

    Hello,

    i didnt find at spec any note about the waited write transfer.

    for example 

    T1 : NONSEQ + write transfer  + HREADY is high

    T2: HREADY dropped + HTRANS is idle - HWDATA ?

    does the HWDATA have to be the right data or it can be any junk ? and only when…

    • over 1 year ago
    • System
    • Embedded forum
  • Questions about Barrier instructions & ACE Barrier transactions

    Nian Liu
    Nian Liu

    1. How barrier instructions like `dmb ishld` and `ldar/stlr` translate to ACE barrier transactions?

    I am curious about how barrier instructions which will only affect specific types of memory operations would translate to ACE barrier transactions.

    I supposed…

    • over 1 year ago
    • System
    • Embedded forum
  • AMBA Adaptive Traffic Profiles

    Matteo Maria Andreozzi
    Matteo Maria Andreozzi

    The performance requirements of computing systems have been growing rapidly, year on year. Demand is further increased by the many new performance-demanding applications that are emerging across multiple market segments, such as machine learning (ML)…

    • over 1 year ago
    • System
    • SoC Design blog
  • Significance of [MS] and [LS] in big-endian data bus in AHB5 Specification

    Pandey
    Pandey

    Hi,

    As indicated in few previous answers (Link Given below) on the big-endian, I believe that the big-endian type in AHB-Lite Spec is BE32. And further the AHB5 Spec added another type of big-endian as BE8. Hence, the active byte lanes for a 32-bit big…

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-A / A-Profile forum
  • Endian about AHB-Lite and AHB5 Specification

    Jacky Chou
    Jacky Chou

    Hello to all,

    I have a question about AMBA3 AHB-Lite and AHB5 Specification:

    In AMBA3 AHB-Lite Specification, "Table 6-2 Active byte lanes for a 32-bit big-endian data bus" is mean word-invariant big-endian or byte-invariant big-endian? Why its…

    • Answered
    • over 2 years ago
    • System
    • Embedded forum
  • single-copy atomicity question for AHB5

    Jacky Chou
    Jacky Chou

    Hi all~

    I have some questions about AHB5 specification

    1.If CPU(or another slave) is in 32-bit single-copy atomic group, can I only write/read a byte to it ? (HWDATA/HRDATA is 32bit-width, HBUST=SINGLE, HSIZE='b000)

    2.What is the description "…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Barrier Transactions in ACE

    Josesmn
    Josesmn

    Can somebody please explain how barrier transactions in ACE work?

    Thanks in advance.

    • Answered
    • over 2 years ago
    • System
    • Embedded forum
  • Please explain some of the new ACE5 signals in relation to the MASTER and INTERCONNECT behavior

    armchronos
    armchronos

    Hi,

    The AMBA5 spec for ACE5 shows some new signals versus ACE4 :

    VAWQOSACCEPT

    VARQOSACCEPT

    AWAKEUP

    ACWAKEUP

    SYSCOREQ

    SYSCOACK

    How are these used in an SOC system ?

    For example, I think but I'm not usre if VAWQOSACCEPT, VARQOSACCEPT is output by each slave…

    • Answered
    • over 2 years ago
    • System
    • SoC Design forum
  • Further explanation needed for VAxQOSACCEPT, AWAKEUP, ACWAKEUP and SYSO*

    armchronos
    armchronos

    Hi ARM/arktos,

    Seems like this online discussion is not working properly.

    I ask a question, you reply, and if I reply the discussion tool doesn't echo back my reply by email.

    So most likely you may not see it.

    Below is my reply to your answer to my…

    • Answered
    • over 2 years ago
    • System
    • SoC Design forum
  • AHB Lite Response

    Muthuvenkatesh
    Muthuvenkatesh

    Hi All,

                               I have doubt in ahb_lite hresp signaling when the address phase is extending.

    In the following diagram transfer address c is extending because of data phase of B.

    In 3rd clk cycle address C is sampled so that shall we expect the…

    • Answered
    • over 2 years ago
    • System
    • SoC Design forum
  • System Address Map (SAM) Configuration for AMBA 5 CHI Systems with CCN-504

    Jason Andrews
    Jason Andrews

    In late 2014, Carbon released the first Carbon Performance Analysis Kit (CPAK) utilizing the ARM CoreLink CCN-504 Cache Coherent Network. Today, the CCN-504 can be built on Carbon IP Exchange with a wide range of configuration options. There are now…

    • over 5 years ago
    • System
    • SoC Design blog
  • Synopsys supports launch of Arm AMBA 5 AXI5, ACE5 protocols with 1st source code test suite and VIP

    Phil Dworsky
    Phil Dworsky

    Through a blog post by Jeff Defilippi, Arm has just announced the new Arm AMBA 5 AXI5, ACE5 and ACE5-Lite protocols; you can request the the latest AMBA 5 specs through a link in that blog. These protocols are employed by Arm's latest technology, including…

    • https://news.synopsys.com/2018-01-31-Synopsys-Announces-Verification-IP-and-Test-Suite-for-Arm-AMBA-ACE5-and-AXI5
    • View
    • Hide
    • over 2 years ago
    • Processors
    • Processors blog
  • Introducing the next generation of AXI and ACE protocols

    Jeff Defilippi
    Jeff Defilippi

    Arm is happy to announce the release of the next generation of AMBA 5 ACE5 and AXI5 protocols. A number of capabilities have been added over the prior AMBA 4 generation to align with AMBA 5 CHI. The protocols have been implemented in Arm’s latest technology…

    • over 2 years ago
    • Processors
    • Processors blog
  • Cycle-accurate Performance Analysis now available for latest AMBA5

    Nick
    Nick

    I already shared last month some details of work we have been doing with Arm on an HPC testchip, the good news continues with our announcement of extended support for the AMBA 5 protocol family with support for CHI.b in our Cycle-accurate performance…

    • over 2 years ago
    • Processors
    • Processors blog
  • AMBA 5 CHI Specifications

    Rakesh Reddy
    Rakesh Reddy

    Hi,

    Can I get reference document for  AMBA 5 CHI specification.? Please Can anyone share me that doc...?

    Thanks & Regards,

    Rakesh Reddy.B

    • Answered
    • over 6 years ago
    • Processors
    • Cortex-A / A-Profile forum