The purpose of Exclusive Access is to read, calculate and modify a cache line atomically. The built-in Atomic Transactions can do some basic calculations at ICN or SN, but if more complex operations are necessary, Exclusive Access is needed.
CHI specification…
I am newly learning AHBprotocol i just want to know what is meaning of single cycle bus master handover?
Hi. I recently got the ARM AMBA specification in my work, and now I am learning stuffs. But the Additional control information got me stuck for a day haha
My questions are
1. What is the reason to use the Cacheable bit in the Cache support? I wish I…
I have a custom accelerator to be integrated with Corelink CMN-600. The CMN-600 has a CHI/ ACE-Lite Interface. How can I add a CHI/ ACE-Lite Interface to my custom accelerator? Is there a tool which can generate the RTL for CHI/ ACE-Lite?
According to spec IHI0022D_amba_axi_protocol_spec section A2.1 page number: A2-28
"All signals are sampled on the rising edge of the global clock "
Q) Should RESET_N also be sampled on the rising edge only?
Section A3.1.2, says
"The AXI protocol…
Hi All,
Now i am focusing on the apb 2.0 specification.
How to perform a continuous transfer in apb 2.0 . I read some forum , But i did't get a idea.
If anyone know the continuous transfer in apb 2.0 ,Please share the waveform . It;s easily…
How can I get apb protocol assertions on arm official site? Thanks in advance, KMK
PSTRB signal indicates which byte lanes to update during a write transfer.
it shows that the bus contain valid data, when PSTRB[3:0]=1111.
why we need bus instead of single bit PSTRB signal?
I have a Cyclone V SOC system, and the ARM is running Linux, and the FPGA is running SDI video and VIP suite items. The FPGA DDR memory is being used by the VIP suite and all works well. The ARM is using the DDR memory attached to it, and Linux does not…
I would like to know why only 16 slave device select lines are present in the AHB and APB bus architectures.
As the title says..
What is byte lane in AXI?
In read transfres how the slave indicates the transaction is over?
If the slave is not able to process read request from master, which response is expected from slave?
Why burst must not cross 4kb in AXI ?
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?
Why the word boundary in AXI is 4k?
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…
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.
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.
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…
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.
why we need write strobe signal in axi where we generate in our verif env
Thanks
Hi,
Can any one explain me how address decoding is done in amba ahb?
HRESP is given for address or data??