DS32EL0124: Use with balanced 150 ohm differential cable

Philip Van Atta

Part Number: DS32EL0124
Other Parts Discussed in Thread: DS32EL0421,

I would like to use the DS32EL0421/DS32EL0124 combination over balanced 150 ohm Differential Cable. The DS32EL0421 has a register setting to allow CML output terminations to be set to 75 ohms. The DS32EL0124 has no such control over CML input impedance and appears fixed at 100 ohms. Can I use this chipset with balanced cable with 150 ohm differential impedance?

over 7 years ago

0 Yaser Ibrahim over 7 years ago

TI__Genius 10250 points

Hello,
Sorry about the delay in responding. I am looking into it and will get back to you soon.

Regards,
Yaser

0 Yaser Ibrahim over 7 years ago in reply to Yaser Ibrahim

TI__Genius 10250 points

Hello,

What bit rate are you running the link at?

Regards,
Yaser

0 Yaser Ibrahim over 7 years ago in reply to Yaser Ibrahim

TI__Genius 10250 points

Hello,

The 75 ohm mode is actually meant for single-ended operation to be used with 75 ohm media. For differential operation 100 ohm media should be used.

Regards,
Yaser

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DS32EL0124: Use with balanced 150 ohm differential cable