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Yangjin Oh Francois Labonte Prateek Bansal EE273 Design Project 3/11/02 High Speed Router Upgrade
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Page 1: Prateek Bansal Francois Labonte Yangjin Oh 3/11/02cva.stanford.edu/classes/ee273/Previous_273/solutions/... · 2019-01-29 · Yangjin Oh Prateek Bansal Francois Labonte EE273 Design

Yangjin Oh

Francois LabontePrateek Bansal

EE273 Design Project

3/11/02

High Speed Router Upgrade

Page 2: Prateek Bansal Francois Labonte Yangjin Oh 3/11/02cva.stanford.edu/classes/ee273/Previous_273/solutions/... · 2019-01-29 · Yangjin Oh Prateek Bansal Francois Labonte EE273 Design

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Page 3: Prateek Bansal Francois Labonte Yangjin Oh 3/11/02cva.stanford.edu/classes/ee273/Previous_273/solutions/... · 2019-01-29 · Yangjin Oh Prateek Bansal Francois Labonte EE273 Design

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20 cm

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Page 12: Prateek Bansal Francois Labonte Yangjin Oh 3/11/02cva.stanford.edu/classes/ee273/Previous_273/solutions/... · 2019-01-29 · Yangjin Oh Prateek Bansal Francois Labonte EE273 Design

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Page 13: Prateek Bansal Francois Labonte Yangjin Oh 3/11/02cva.stanford.edu/classes/ee273/Previous_273/solutions/... · 2019-01-29 · Yangjin Oh Prateek Bansal Francois Labonte EE273 Design

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Page 14: Prateek Bansal Francois Labonte Yangjin Oh 3/11/02cva.stanford.edu/classes/ee273/Previous_273/solutions/... · 2019-01-29 · Yangjin Oh Prateek Bansal Francois Labonte EE273 Design

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G(s)X(s)

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Y(s)

OutputLine ResponseEqualizer

H(s)

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Symbol Wave

D0:A0:v(tagg)

Vo

ltag

es (

lin)

0

100m

200m

Time (lin) (TIME)05n 10n 15n

Response at the Far End for an Unequalized Input

Symbol Wave

D0:A0:i(vagressor)C

urr

ents

(lin

)

-10m

0

10m

Time (lin) (TIME)05n 10n 15n

UnEqualized Input Current

Symbol Wave

D1:A0:v(tagg)

Vo

ltag

es (

lin)

-40m

-20m

0

20m

40m

Time (lin) (TIME)05n 10n 15n

Response at the Far End after Equalization

Symbol Wave

D1:A0:i(vagressor)

Cu

rren

ts (

lin)

-10m

0

10m

Time (lin) (TIME)05n 10n 15n

Equalized Input Current

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+

+

Switch Card

Connector Connector

AGGRESSOR

VICTIM

Equalizer

Equalizer Adder

Cancelor

Far End

Crosstalk

90 degree phase shifter

PCB trace PCB trace

Line Card20cm 20cm

trace

backplane

60cm

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G(s) H(s)

H(s)G(s)

Equalizer

Equalizer

Line

LineAdder

CancelorFEXT F(s)

Aggressor

X(s)

Victim

No input

FEXTY(s)

Z(s)

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Symbol Wave

D1:A0:v(tvictim)

D0:A0:v(tvictim)

Vo

ltag

es (

lin)

-15m

-10m

-5m

0

5m

10m

15m

Time (lin) (TIME)10n 15n

20n

Yellow: Far End Crosstalk before Cancellation Blue : Crosstalk Cancellation Signal

Symbol Wave

D2:A0:v(tvictim)

Vo

ltag

es (

lin)

-8m

-6m

-4m

-2m

0

2m

4m

6m

Time (lin) (TIME)10n 15n

20n

Far End CrossTalk after Crosstalk Cancellation

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Driver SegmentDifferential PredriverReplica Bias

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cancellationoffset control forCapacitor

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clock

clock

clock

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Page 25: Prateek Bansal Francois Labonte Yangjin Oh 3/11/02cva.stanford.edu/classes/ee273/Previous_273/solutions/... · 2019-01-29 · Yangjin Oh Prateek Bansal Francois Labonte EE273 Design

Cd

gnd

Received Oscillator

VCO

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Frequency ComparatorCharge Pump & Loop filter

FSM

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A

N

B

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