SGMII DC transmitter electrical characteristics

[nileshkhupase]

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. 

[ufedor]

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