From: Tamer Kafafi <Tamer_Kafafi@pmc-sierra.com> To: "'t10@t10.org'" <t10@t10.org> Subject: RE: SAS2 CJTPAT with SSP header Date: Wed, 25 Jul 2007 21:32:09 -0700 X-Message-Number: 7948 Formatted message: HTML-formatted message In fact there are other errors: - The scramble XORing is performed incorrectly on the first dword. It should be C3D2768Dh not D2D2768Dh - The scrambler value for the crc slot should be 3D2D7984h not 9AFCB3DDh The corrected table is below: Data dword number SSP frame contents SMP frame contents Desired pattern (ON THE WIRE) Scrambler output Scrambled pattern Not applicable SOF SOF Not applicable SOF 0 FRAME TYPE field set to 01h (i.e., DATA frame) and 23 subsequent bytes each set to 00h SMP FRAME TYPE field set to 01h (i.e., reserved) and 23 subsequent frame-type dependent bytes each set to 00h C3D2768Dh C2D2768Dh 01000000h 1 1F26B368h 1F26B368h 00000000h 2 A508436Ch A508436Ch 00000000h 3 3452D354h 3452D354h 00000000h 4 8A559502h 8A559502h 00000000h 5 BB1ABE1Bh BB1ABE1Bh 00000000h 6 INFORMATION UNIT field Frame-type dependent bytes See the INFORMATION UNIT field in table A.4 117 118 CRC field 79C211AAh 3D2D7984h 44EF682Eh Not applicable EOF EOF Not applicable EOF Thanks Tamer Kafafi Senior Product Design Engineer, ESD PMC-Sierra _____ From: owner-t10@t10.org [mailto:owner-t10@t10.org] On Behalf Of Tamer Kafafi Sent: Tuesday, July 24, 2007 4:31 PM To: 't10@t10.org' Subject: SAS2 CJTPAT with SSP header Robert, Regarding the proposal 07-297r1 , Table A.6 - CJTPAT with fixed content - is incorrect. The columns "desired pattern" and "scrambled pattern" should be interchanged for rows 1 to 6. The "desired pattern" column represents what should be on the wire, while the "scrambled pattern" column represents what the application/transport layer sees. Obviously the newly added SSP header should be visible at the application/transport layer not on the wire. Also, as a result, the CRC values in row 118 will be completely different. Thanks Tamer Kafafi Senior Product Design Engineer, ESD PMC-Sierra