Alignment Marker Format UpdatesAdrian Butter (on behalf of the P802.3bs Logic Ad Hoc team)

Contributors

• Mark Gustlin, Xilinx• Pete Anslow, Ciena• Ben Jones, Xilinx• Jeff Slavick, Avago Technologies• Eric Baden, Broadcom• Juan Carlos Calderon, Inphi• David Ofelt, Juniper Networks• Tongtong Wang, Huawei• Phil Sun, Credo Semiconductor

Supporters

• Gary Nicholl, Cisco

Introduction➢ Alignment Marker format definition is one of the Logic Ad Hoc BTIs to resolve in support of a

technically complete P802.3bs draft:

➢ Since December 2015, several Logic Ad Hoc team members have made excellent contributions towards resolving this BTI! For example:

○ Toward 400GbE AMs and PAM4 test pattern characteristics○ 400GbE AMs revised proposal○ Proposed AM Format

➢ Logic Ad Hoc team consensus has been attained on Alignment Marker formatting.➢ Comment #3 was logged against P802.3bs D1.2 to support technical updates capturing this

consensus.○ Comment #2 was also logged identifying an ancillary issue found during this activity.

➢ Editing details supporting these technical updates are contained in “butter_3bs_01_0316” to be presented during the 802.3 March plenary in Macau during the 802.3bs Logic Track meeting.

➢ This presentation identifies those updates with supporting material...

http://www.ieee802.org/3/bs/public/adhoc/logic/dec11_15/anslow_01_1215_logic.pdfhttp://www.ieee802.org/3/bs/public/adhoc/logic/dec11_15/anslow_01_1215_logic.pdfhttp://www.ieee802.org/3/bs/public/adhoc/logic/jan8_16/anslow_01_0116_logic.pdfhttp://www.ieee802.org/3/bs/public/adhoc/logic/jan8_16/anslow_01_0116_logic.pdfhttp://www.ieee802.org/3/bs/public/adhoc/logic/feb9_16/gustlin_01_0216_logic.pdfhttp://www.ieee802.org/3/bs/public/adhoc/logic/feb9_16/gustlin_01_0216_logic.pdf

D1.2 Comments Regarding Alignment Markers

ObjectivesChange alignment marker format from: … to:

Objectives

m513

m512

m511

m510

m509

m508

m507

m506

m513

m512

m511

m510

m509

m508

m507

m506

m505

m504

m503

m502

m501

m500

m499

m498

m504

m503

m502

m501

m500

m499

m498

m505 m497

m496

m495

m494

m493

m492

m491

m490

m497

m496

m495

m494

m493

m492

m491

m490

m489

m488

m487

m486

m485

m484

m483

m482

m488

m487

m486

m485

m484

m483

m482

m489 m481

m480

m479

m478

m477

m476

m475

m474

m481

m480

m479

m478

m477

m476

m475

m474

m473

m472

m471

m470

m469

m468

m467

m466

m472

m471

m470

m469

m468

m467

m466

m473 m465

m464

m463

m462

m461

m460

m459

m458

m465

m464

m463

m462

m461

m460

m459

m458

m457

m456

m455

m454

m453

m452

m451

m450

m456

m455

m454

m453

m452

m451

m450

m457 m449

m448

m447

m446

m445

m444

m443

m442

m449

m448

m447

m446

m445

m444

m443

m442

m441

m440

m439

m438

m437

m436

m435

m434

m440

m439

m438

m437

m436

m435

m434

m441 m433

m432

m431

m430

m429

m428

m427

m426

m433

m432

m431

m430

m429

m428

m427

m426

m425

m424

m423

m422

m421

m420

m419

m418

m424

m423

m422

m421

m420

m419

m418

m425 m417

m416

m415

m414

m413

m412

m411

m417

m416

m415

m414

m413

m412

m411

mNNN 10-bit Message symbol NNN of FEC codeword A. mNNN 10-bit Message symbol NNN of FEC codeword B.

Map alignment markers to FEC codewords in the following manner:

Comment #3 Update - 119.2.4.4 Paragraph 1

Comment #3 Update - 119.2.4.4 Paragraph 2

Comment #3 Update - 119.2.4.4 Paragraph 3, Figure 119-4

Comment #3 Update - 119.2.4.4 Paragraph 4, Table 119-1

Comment #3 Update - 119.2.4.4 Paragraph 5+ (New Content)

Comment #3 Update - 119.2.4.4 Paragraph 5+ (New Content)

PRBS9 Padding OrganizationBitRange 20 23 24 29 30 31 32 39 50 55 56 59 60 63 64 69 80 87 88 89 90 95 96 99 130 139

0

1

2

3

12

13

14

15

Lane

0:5

6:11

12:17

18:23

72:77

78:83

84:89

90:95

96:97

98:99

100:101

102:103

120:121

122:123

124:125

126:127

128:131

132:135

136:139

140:143

176:179

180:183

184:187

188:191

192:195

196:199

200:203

204:207

240:243

244:247

248:251

252:255

256:257

258:259

260:261

262:263

280:281

282:283

284:285

286:287

288:293

294:299

300:305

306:311

360:365

366:371

372:377

378:383

384:393

394:403

404:413

414:423

504:513

514:519

x:y = PRBS9 bit range for the current Alignment Marker insertion operation (bit 0 generated first).10-bit Message symbol of FEC codeword A. 10-bit Message symbol of FEC codeword B.

Comment #3 Update - 119.2.4.4 Paragraph 5+ (New Content)

Comment #3 Update - 119.2.4.4 Paragraph 5+ (New Content)

Comment #2 Update - 119.2.4.5

Thanks!