TUSB211 issue

Sean Havanas

Intellectual 275 points

Other Parts Discussed in Thread: TUSB211

I have an EVM and have not had any success using it in the following manner.

HOST <----5M_cable----> TUSB211EVM<----5M_cable----> DEVICE

Idon’t have a high bandwidth scope but I tried all three EQ switch settings on the EVM.

If we replace one of the 5M cables with a 2M cable the host does connect and communicate to device.

I ere hoping to use just one TUSB211 separating two 5M cables. Any recommendations?

Thanks

over 9 years ago

0 Diego Cortes over 9 years ago

TI__Mastermind 36085 points

Hello Sean,

I am reviewing your post and I will reply ASAP.

Regards,
Diego.

0 Diego Cortes over 9 years ago in reply to Diego Cortes

TI__Mastermind 36085 points

Hello Sean,

10 meters is pushing the limit of the TUSB211, the problem might be the voltage drop across the cable. You should check VBUS at the device to see if it is still within the spec limits. Also, the TUSB211 does not boost the DC voltage of the signals, so it cannot compensate for the loss through the cable, it only boosts the edges. 10m cable may have too much DC loss.

Regards,
Diego.

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TUSB211 issue