Comments on: AMBA APB Master Verification IP

By: kamal

kamal — Mon, 09 Jan 2012 04:22:50 +0000

Hi ,
I am not understood the “burst operation” concept because AMBA APB will not support burst operation so would anyone explain that

Thanks in advance
kamal

By: mohammed nawaz shaik

mohammed nawaz shaik — Wed, 14 Dec 2011 18:54:38 +0000

dear sir,
i would like to thank for your contribution,i kindly request you to share IP’s based on open verification methodology also.

regards,
nawaz.

By: Tiksan

Tiksan — Wed, 15 Sep 2010 11:18:27 +0000

Thanks for sharing Chandra!

By: Chandra

Chandra — Wed, 15 Sep 2010 04:46:39 +0000

Hi Tiksan,
I did the following changes to use apb verification IP with ncvlog in apb_m.v(see readData fn below).
task readData(input bit32 address, output bit8 dataOutBuff[$],
input int lenght, addrIncr = 1);
bit32 dataWord;
dataOutBuff.delete();// = {};
for(int i = 0; i < lenght; i+=this.cfg.DataBlockSize) begin
this.readWord(address, dataWord);
if(addrIncr == 1) begin
address += this.cfg.DataBlockSize;
end
if (this.cfg.DataBlockSize == 4) begin
dataOutBuff.push_back(dataWord[7:0]);
dataOutBuff.push_back(dataWord[15:8]);
dataOutBuff.push_back(dataWord[23:16]);
dataOutBuff.push_back(dataWord[31:24]);
/*
dataOutBuff = {dataOutBuff, dataWord[7:0], dataWord[15:8],
dataWord[23:16], dataWord[31:24]};
*/
end else if (this.cfg.DataBlockSize == 2) begin
dataOutBuff.push_back(dataWord[7:0]);
dataOutBuff.push_back(dataWord[15:8]);
/*
dataOutBuff = {dataOutBuff, dataWord[7:0], dataWord[15:8]};
*/
end else begin
dataOutBuff.push_back(dataWord[7:0]);
/*
dataOutBuff = {dataOutBuff, dataWord[7:0]};
*/
end
end
dataOutBuff = dataOutBuff[0:lenght];
endtask
Thanks
Chandra

By: Tiksan

Tiksan — Sun, 12 Sep 2010 07:42:56 +0000

Hi Vinay,

The monitor should not generate transactions on the bus so it should be more like slave.

Bests,
Tiksan.

By: vinay

vinay — Tue, 31 Aug 2010 07:08:10 +0000

hi i am doing apb monitor in system verilog does it require both apb master n slave vip
hw i have to approach

By: andrew

andrew — Tue, 17 Nov 2009 12:39:13 +0000

Hi Tiksan

At this moment I dont need to select multiple slaves. So I’ll create mux in my testbench.
Thanks,
Andrew

By: Tiksan

Tiksan — Mon, 16 Nov 2009 15:28:15 +0000

Hi Andrew,

If your system is not supporting several slaves selects at the same time then you can create simple multiplexer in you testbench. Decode APB address bus and generate select signals to your slaves.
But if you want to write to several slaves at the same time then master VIP should be modified. I can help you with that.

If you have any other questions please don’t hesitate to ask.
I’m glad to help you.

Best Regards,
Tiksan

By: andrew

andrew — Mon, 16 Nov 2009 14:20:19 +0000

Hi Tiksan,
Thank you very much for your verification IP. I tried to integrate the master VIP in my environment and it was really easy without any problems. I even reused you test environment from examples.
In the next step I want to test multiple slaves. Is it difficult to extend master APB VIP to support multiple slaves?
Thank you very much,
Andrew.