SGMII DC transmitter electrical characteristics

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SGMII DC transmitter electrical characteristics

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nileshkhupase
Contributor I

Dear Sir / Madam,

In table 34. SGMII DC transmitter electrical characteristics of datasheet of LS1021A  ( Rev. 3, 05/2016) different values of Output differential voltage VOD have been mentioned. Is |VOD| programmable? and what is the default value of VOD?

Thanking you in advance. 

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ufedor
NXP Employee
NXP Employee

The SGMII TX amplitude could be reduced.

The correspondence is as follows:

Min

Typ

Max

 

320.0

500.0

725.0

LNTECR0n[AMP_RED]=0b000000

293.8

459.0

665.6

LNTECR0n[AMP_RED]=0b000001

266.9

417.0

604.7

LNTECR0n[AMP_RED]=0b000010

240.6

376.0

545.2

LNTECR0n[AMP_RED]=0b000011

213.1

333.0

482.9

LNTECR0n[AMP_RED]=0b000110

186.9

292.0

423.4

LNTECR0n[AMP_RED]=0b000111

160.0

250.0

362.5

LNTECR0n[AMP_RED]=0b010000

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