DS100KR800: he difference between the 10G mode and 10G-KR mode

Frank Xiao

Genius 12055 points

Part Number: DS100KR800

hI team,

We want to check the difference between the 10G mode and 10G-KR mode? Whether configure pin 21 mode resistor is fine? Thanks.

over 3 years ago

0 Nasser Mohammadi over 3 years ago

TI__Guru* 93600 points

Hi Frank,

Yes MODE pin 21 is used to select between these two modes.

Regards,, Nasser

0 Frank Xiao over 3 years ago in reply to Nasser Mohammadi

TI__Genius 12055 points

Hi Nasser,

What's the difference between the two modes? Thanks.

0 Nasser Mohammadi over 3 years ago in reply to Frank Xiao

TI__Guru* 93600 points

Hi Frank,

In KR mode device is operating in its linear region. It means it is working like an analog buffer. In this mode, training signal goes through the device - device is seamless to these patterns. On the other hand, in 10GbE mode, device operates in limiting mode. Meaning device is working like a digital device where we have either logic high or logic low at the output. In this mode, training pattern does not go through the device.

Regards,, Nasser

0 Frank Xiao over 3 years ago in reply to Nasser Mohammadi

TI__Genius 12055 points

Hi Nasser,

it seems the KR mode is better than the 10G mode. So what's the advantage of the 10G mode? (Which condition we need to configure it to be 10G mode?). Thanks.

0 Nasser Mohammadi over 3 years ago in reply to Frank Xiao

TI__Guru* 93600 points

Hi Frank,

In some applications where we have high insertion loss, 10G mode could work better.

Regards,, Nasser

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DS100KR800: he difference between the 10G mode and 10G-KR mode