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PCIe-AS - Tutorial -- Is there a CRC for the address header ? [message #914]

Tue, 14 September 2004 09:54

Walter F.J. Müller
Messages: 229
Registered: December 2003
Location: GSI, CBM

first-grade participant

From: lxg0311.gsi.de

During the 2nd FutureDAQ workshop (all talks in document management) some questions came up during E. Denes's talk on PCIe-AS. On the Intel PCIe website is a very good and comprehensive tutorial talk given at the PCI SIG Developers Conference 2004, see

ftp://download.intel.com/netcomms/as/devcon_as_overview.pdf

On 116 slides, many aspects of the protocol are described in quite some detail.

Now to a specific question raised during the talk:

Q: Is there a CRC protection for the address header ?

A: Yes, see on page 14 of the tutorial. The AS header is 64 bits, which include

7 bit header CRC
5 bit turn pointer
7 bit PI number
31 bit turn pool
1 bit direction (forward/backward routing)

W.F.J.Müller, GSI, CBM, Tel: 2766

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[Message index]

		PCIe-AS - Tutorial -- Is there a CRC for the address header ? By: Walter F.J. Müller on Tue, 14 September 2004 09:54
		Re: PCIe-AS - Tutorial -- Is there a CRC for the address header ? By: David Slogsnat on Wed, 15 September 2004 14:59
		Re: PCIe-AS - Tutorial -- Is there a CRC for the address header ? By: Walter F.J. Müller on Wed, 15 September 2004 16:05
		Re: PCIe-AS - Tutorial -- Is there a CRC for the address header ? By: David Slogsnat on Wed, 15 September 2004 16:40
		Re: PCIe-AS - Tutorial -- Is there a CRC for the address header ? By: Walter F.J. Müller on Wed, 15 September 2004 18:15
		Re: PCIe-AS - Tutorial -- Is there a CRC for the address header ? By: David Slogsnat on Fri, 17 September 2004 15:52
		Re: Error recovery - the requirements By: Walter F.J. Müller on Sun, 19 September 2004 21:05
		What is the BER on copper ? How likely are problems ? By: Walter F.J. Müller on Wed, 15 September 2004 19:40
		Re: PCIe-AS - Tutorial -- Is there a CRC for the address header ? By: Walter F.J. Müller on Sun, 19 September 2004 20:57

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