• Write Data Interleaving - AXI

    Amaresh Chaligeri
    Amaresh Chaligeri
    Note: This was originally posted on 19th March 2009 at http://forums.arm.com

    Hello,

    Can anybody help me to understand the reasoning behind write data interleaving ordering restriction imposed by AXI spec.
    [Chapter 8.5  Write data interleaving]

    "The order…
    • over 6 years ago
    • System
    • SoC Design forum
  • What's the clock frequency for CHI interface protocol ?

    armchronos
    armchronos

    Hi,

    I was reading the CHI architecture specification but there is no mention of electrical characteristics such as

    the clock frequency for the CHI interface.

    What is the max and min frequency for CHI interface ?

    Thanks,

    David

    • over 2 years ago
    • System
    • SoC Design forum
  • Why does AHB or APB support only 16 slave devices?

    Ravindran
    Ravindran

    I would like to know why only 16 slave device select lines are present in the AHB and APB bus architectures.

    • Answered
    • over 3 years ago
    • System
    • SoC Design forum
  • what are these axi transaction types mean? fixed, incremental, wrapped, reversed? Are there any docs descriped them in detail?

    bander
    bander

    As the title says..

    • Answered
    • over 3 years ago
    • System
    • SoC Design forum
  • AXI

    Muthuvenkatesh
    Muthuvenkatesh

    What is byte lane in AXI?

    • Answered
    • over 3 years ago
    • System
    • SoC Design forum
  • read transfers

    vidya
    vidya

    In read transfres how the slave indicates the transaction is over?

    • over 3 years ago
    • System
    • SoC Design forum
  • AXI read transfer

    vidya
    vidya

    If the slave is not able to process read request from master, which response is expected from slave?

    • Answered
    • over 3 years ago
    • System
    • SoC Design forum
  • AXI

    Muthuvenkatesh
    Muthuvenkatesh

    Why burst must not cross 4kb  in AXI ?

    • over 3 years ago
    • System
    • SoC Design forum
  • Working frequency on AMBA- APB,AHB, AXI

    Ujjwal.K64
    Ujjwal.K64

    Hii,

    Greetings !!

    I would like to know the standard operating clock frequency and data rate of AMBA- apb, ahb, axi.

    Please someone help me out.

    Thanks in advance

    Regards

    Ujjwal

    • Answered
    • over 3 years ago
    • System
    • SoC Design forum
  • axi read transfers

    vidya
    vidya

    what is the difference between overlapping and out of order transfers in Aciform the explanation it seems that both are same is this the case?

    • Answered
    • over 3 years ago
    • System
    • SoC Design forum
  • 4k boundary in AXI

    vidya
    vidya

    Why the word boundary in AXI is 4k?

    • Answered
    • over 3 years ago
    • System
    • SoC Design forum
  • AXI transfer

    isounder
    isounder

    Consider Data interface is 64 bit.
    It is Write transfer.
    AXI master need to transfer 11 bytes and starting address is 0. Anyone suggest which one is a valid among below mentioned two scenarios.

    Scenario 1:
    Burst -> Address:0, size:3, length:1, burst_type…

    • Answered
    • over 2 years ago
    • System
    • SoC Design forum
  • AHB wait state insertion

    rajaraman r
    rajaraman r

      1.In AHB except a single transfer inset a wait state in middle of the burst only or insert anywhere in a burst.

      2. In INCR burst transfer can i insert a BUSY in a middle of the burst or must insert a last of the burst.

    • over 2 years ago
    • System
    • SoC Design forum
  • Why do AMBA AXI does not support AxBURST of decrementing address type?

    rssortur
    rssortur

    Use case which come to my mind is.

    1. Display controller might need to flip an image 180 degrees. Here memory reading pattern is reversed.

    2. Where ever there is LIFO (Last In Fist Out) implementations.

    • over 2 years ago
    • System
    • SoC Design forum
  • AXI WRITE DATA CHANNEL

    Muthu_venkatesh
    Muthu_venkatesh

    Hi All,

                           I am doing single write operation to AXI slave from avalon BFM. The data and address signals

    are reached into the axi slave.But if i am try to read back the data which i have written in the same location,the data is  not matched.

    It…

    • over 2 years ago
    • System
    • SoC Design forum
  • AXI read reordering depth and read interleaving depth. Are they same?AXI

    rssortur
    rssortur

    Is interleave and reorder the same concept?

    My interpretation is a slave can reorder without interleaving, which means entire read burst are reordered with no interleaving. So my understanding is they are different. Confirm my understanding.

    • over 2 years ago
    • System
    • SoC Design forum
  • why we need write strobe in axi

    verifengg
    verifengg

    why we need write strobe signal in axi where we generate in our verif env

    Thanks

    • Answered
    • over 2 years ago
    • System
    • SoC Design forum
  • AMBA AHB

    vinod474
    vinod474

    Hi,

    Can any one explain me how address decoding is done in amba ahb?

    • over 2 years ago
    • System
    • SoC Design forum
  • HRESP

    vinod474
    vinod474

    HRESP  is given  for address or data??

    • over 2 years ago
    • System
    • SoC Design forum
  • amba ahb

    vinod474
    vinod474

    hi,

    Is HREADY is used by the slave  to notify the master that it is ready to receive or to indicate transfer is completed??

    thanks in advance

    • over 2 years ago
    • System
    • SoC Design forum
  • Regarding WRAP burst calculation in AXI4

    pavan316
    pavan316

    Could you please help me on this topics in AXI4 protocal ::

    1. what is meant by Aligned and Unaligned address?

    2.How can I calculate WRAP boundary calculation in AXI4? please explain with example?

    • Answered
    • over 2 years ago
    • System
    • SoC Design forum
  • AXI WVALID before AWVALID

    srp
    srp

    what happen if WVALID asserted before AWVALID ??

    • Answered
    • over 2 years ago
    • System
    • SoC Design forum
  • In case of AXI4 lite protocol,what is the relation between BValid signal and Wvalid signal?

    Nitin Dixit
    Nitin Dixit

    In case of AXI4 lite protocol,whether BValid should be asserted before WVALID signal deassertion? what is the legal case?

    • over 2 years ago
    • System
    • SoC Design forum
  • AXI4-lite :Wready dependency on Awvalid and Wvalid

    Nitin Dixit
    Nitin Dixit

    In specification it is mentioned that WREADY signal can wait for AWVALID and WVALID signals.

    Does it mean that WREADY signal should be asserted only after assertion of AWVALID and WVALID signals.

    What is the relation between these signals?

    and performance…

    • 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
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