10GBASE-T Objectives

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10GBASE-T Objectives

Robert Hays- Intel Corporation

Robert Hays- Intel Corporation

Bruce Tolley-Cisco Systems

Pat

Pat ThalerThaler--Agilent Agilent TechnologiesTechnologies Wael

Wael Diab-Cisco Systems Diab-Cisco Systems David Law -3Com Corporation

David Law -3Com Corporation

Jeff Warren- Independent

Jeff Warren- Independent

George Zimmerman- SolarFlare Communications

Ron Nordin - Panduit Corporation

Joseph N. Babanezhad- Plato Labs, Inc.

Tetsu Koyama - NEC

Chris DiMinico - MC Communications

Chris DiMinico - MC Communications

Mike Bennett- Lawrence Berkeley National Laboratory

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10GBASE-T Objective Proposal

•

Modify current objectives:

–

to establish link distances for cabling channels

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•Preserve the 802.3/Ethernet frame format at the MAC Client service interface

•Meet 802 Function Requirements, with the possible exception of Hamming Distance

•Preserve min. and max. frame size of current 802.3 Std.

•Support full duplex operation only

•Support star-wired local area networks using point-to-point links and structured cabling topologies

•To not support 802.3ah (EFM) OAM unidirectional operation

•Support coexistence with 802.3af

•Support Clause 28 auto-negotiation

•Support a speed of 10.000 Gb/s at the MAC/PLS service interface

•Select copper media from ISO/IEC 11801:2002, with any

appropriate augmentation to be developed through work of 802.3 in conjunction with SC25/WG3

•Support 100 m over 4-connector structured 4-pair, twisted-pair

(4)

IEEE P802.3 10GBASE-T Objectives (proposal)

•

Preserve the 802.3/Ethernet frame format at the MAC Client service

interface

•

Meet the

requirements of IEEE Std 802-2001

•

Support a BER objective of 10E-12

•

Preserve minimum and maximum frame size of the current 802.3

standard.

•

Support full duplex operation only

•

Support a speed of 10.000 Gb/s at the MAC/PLS service interface

•

To not support 802.3ah (EFM) OAM unidirectional operation

•

Support coexistence with 802.3af

(5)

IEEE P802.3 10GBASE-T Objectives (proposal)

• Support star-wired local area networks using point-to-point links and structured cabling topologies

• Select copper media from ISO/IEC 11801:2002, with any appropriate augmentation to be developed through work of 802.3 in conjunction withSC25/WG3

• Support operation over 4-connector structured 4-pair, twisted-pair copper cabling

• Define a single 10 Gb/s PHY which support links of:

– At least 100 m on four-pair Class F balanced copper cabling

– At least 55 m to 100m on four-pair Class E balanced copper cabling

– At least 45 m to 100m on four-pair Class D balanced copper cabling

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(7)

IEEE P802.3 10GBASE-T Objectives (proposal)

• Select copper media from ISO/IEC 11801:2002, with any appropriate augmentation to be developed through work of 802.3 in conjunction withSC25/WG3

(8)

Capacity and Margin vs. Cabling length

•

Model Assumptions:

–

Cabling AdHoc 4-connector models

•

IL and ELFEXT scaled for length

–

No ANEXT mitigation assumed

•

-150 dBm/Hz background noise

•

55 dB RL Cancellation

•

40 dB NEXT, 25 dB FEXT cancellation

(9)

Capacity and Margin vs. Cabling length

•

Capacity 18-20 Gbps used as metric for

feasibility (roth_1_0503)

•

Implementation metric:

–

PAM-10 DFE margin with example code

(jones_2_0103 slide 14)

–

Detailed time-domain simulations shown for

this case, including cancellation to levels

shown

•

Matlab code available for use with models from

cabling adhoc

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Class D/Cat 5e UTP: 45 meters Capacity & Margin

•

Capacity > 18.0 Gbps

•

>3.8 dB PAM-10 margin at 1e-12 BER

0 100 200 300 400 500 600 -180 -160 -140 -120 -100 -80 -60 s ignal out rem next rem alien next rem fe xt rem echo rem awgn

(11)

Class E/Cat6 UTP: 55 meters Capacity & Margin

•

Capacity > 19.8 Gbps

•

>3.4 dB PAM-10 margin at 1e-12 BER

-200 -180 -160 -140 -120 -100 -80 -60 s ignal out rem next rem alien next rem fext rem echo rem awgn

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Class F/Cat7: 100 meters Capacity & Margin

•

Capacity > 28.6 Gbps

•

> 16 dB PAM-10 margin at 1e-12 BER

0 100 200 300 400 500 600 700 -220 -200 -180 -160 -140 -120 -100 -80 s ignal out rem next rem fext rem echo rem awgn

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Class E/Cat6 ScTP: 100 meters Capacity & Margin

•

(ref cohen_1_0703)

•

Capacity > 20.6 Gbps

•

>7 dB PAM-10 margin at 1e-12 BER

-180 -160 -140 -120 -100 -80 -60 s ignal out rem next rem alien next rem fext

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EMC Compliance:Class D/Cat5e & Class E/Cat6 Cabling

•

References: wjones_2_0103 slide 10, lcohen_1_0903

•

Class D & E cabling systems can meet FCC class A

emissions over 500MHz BW

–

Augmented specifications will be useful in guaranteeing this

Class D

Class E

0 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 7 0 0 8 0 0 9 0 0 1 0 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 E s t im a t e d R a d i a t e d E m i s s i o n s a t 3 M e t e r s : C a t 5 e U T P L o n g S p a n

Electric field (dBuV/m)

G e n e r a l C a b l e B e r k T e k H y p e r P l u s A l p h a W i r e C a t 5 S c T P FCC Class A limit F C C C l a s s B l i m i t UTP5e Manufacturer A UTP5e Manufacturer B ScTP5e Manufacturer C 0 100 200 300 400 500 600 700 800 900 1000 0 10 20 30 40 50 60 70 80 E s t i m a t e d R a d i a t e d E m i s s i o n s a t 3 M e t e r s : C a t 6 U T P L o n g S p a n E

lectric field (dBuV/m)

Ava y a S y s t i m a x G i g a s p e e d Belden Datatwist Six 7881A FCC Class A limit FCC Class B limit

UTP6 Manufacturer A UTP6 Manufacturer B

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•

Extrapolating from commercial silicon, as has been done in

previous presentations, yields high estimates

•

Sample of available technology:

AD12400 10.3 ENOB 400Msps 7W

MAX108 7.5 ENOB 1500Msps 6.5W

TC1200 8.0 ENOB 1000Msps 5.5W

•

Extrapolation yields (4 pair) x (5W/ADC) = 20W

•

However, the same approach applied to 1000BASE-T:

•

Sample of commercial 8 bit ADC silicon:

AD9054A 8 bit 200Msps 640mW

AD9480 8 bit 250Msps 425mW

ADC08200 8 bit 200Msps 210mW

•

Yields erroneous result of (4 pair) x (425mW/ADC) = 1.7W

Estimating ADC Power Consumption

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•

One example of a more efficient ADC approach

•

Time Interleaved ADC Array

•

The technology has been presented within IEEE

Time Interleaved Converter Arrays

Black, W.C.; Hodges, D.A.

Solid-State Circuits, IEEE Journal of, Volume: 15 Issue: 6, Dec 1980 Page(s): 1022-1029

DSP Based Equalization for Optical Channels

O Agazzi, V Gopinathan, K Parhi (Broadcom); K Kota (Cicada); A Phanse (National) September 2000, IEEE 802.3ae

http://www.ieee802.org/3/ae/public/sep00/agazzi_1_0900.pdf

A 900MS/s 6b Interleaved CMOS Flash ADC

Yu, B.; Black, W.C., Jr

Custom Integrated Circuits, 2001, IEEE Conference on, 6-9 May 2001 Page(s): 149-152

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•

“DSP Based Equalization for Optical Channels” September 2000

Example of Time Interleaved ADC

6bit 10GHz 800mvP-P 8 parallel ADCs .18u 1.8V 450mW

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•

Sample of available technology:

nAD10120-13a 10bit 120Msps 90mW new

MAX1449 9.3 ENOB 105Msps 157mW 1 yr old

AD9215-105 10bit 105Msps 175mW 1 yr old

•

Achievable ADC power

today

:

(8 ADC / pair) x (90mW / ADC) x 4 pairs < 2.88W

•

Process advances should improve this to < 1.5W by 2005

Power Estimates for Time Interleaved ADC

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Power Consumption & Complexity

•

Based on an existing detailed design, we estimate:

–

1.5 TOPs computation (1.5X Quad 1000BASE-T)

–

6M Gates DSP

–

PAM-10 computation

–

Cancellation per simulations

–

Analog components & A/D converters in CMOS

•

90nm process mature & 65nm technology as

commercial in 2006 at ASIC foundries

•

Based on silicon in the lab today:

–

we estimate power for 10GBASE-T in 2006 to be

<7W with 90nm technology

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IEEE P802.3 10GBASE-T Objectives (proposal)

• Select copper media from ISO/IEC 11801:2002, with any appropriate