SN65MLVD206: Application inquiry

Renan Santos Adriano

Mastermind 19560 points

Part Number: SN65MLVD206

Hello Team,

My Customer is using the SN65MLVD206 for a SPI clock transmission/reception. RE & DE pins are wire-ored (shorted together) and connected to a GPIO of a uC. The uC controls the state of these pins by pulling high or low. Will there be an issue using this scheme? uC in this case can be SPI master or slave hence the need for bidirectional clock signal.

Similar to the above case, pins R & D are wire-ored of the same device for the same reason. is OK to use it this way?

Regards,

Renan

over 3 years ago

0 Ikechukwu Anyiam over 3 years ago

TI__Mastermind 35130 points

Answered here: https://e2e.ti.com/support/interface/f/interface-forum/992731/sn65mlvd206-re-de-shorted-together

Regards,

I.K.

0 Renan Santos Adriano over 3 years ago in reply to Ikechukwu Anyiam

TI__Mastermind 19560 points

Hello I.K.

Thank you for this response. Can you share with me what exactly you mean by "however, as the stub created by this as well as...".

Regards,

Renan

0 Ikechukwu Anyiam over 3 years ago in reply to Renan Santos Adriano

TI__Mastermind 35130 points

Hi Renan,

Stubs are discussed in #2 in this blog: https://e2e.ti.com/blogs_/b/analogwire/posts/the-top-5-questions-when-using-m-lvds-in-backplane-applications

except in this case it is single-ended signals.

Regards,

I.K.

0 Renan Santos Adriano over 3 years ago in reply to Ikechukwu Anyiam

TI__Mastermind 19560 points

Hello I.K.,

Good day.

From the article, stub is referred to the PCB trace length on the LVDS side - pins 6 or 7. My customer is asking to short the pins 1 and 4 which is the digital side of the transceiver. Including a screen capture of the schematic for clarity of their implementation. Please look at the connections of U33.

Regards,

Renan

0 Ikechukwu Anyiam over 3 years ago in reply to Renan Santos Adriano

TI__Mastermind 35130 points

Closing duplicate thread, please refer to here: https://e2e.ti.com/support/interface/f/interface-forum/992731/sn65mlvd206-re-de-shorted-together

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SN65MLVD206: Application inquiry