TS3DV642: 6 pairs LVDS MUX

Ryo Akashi

Genius 9470 points

Part Number: TS3DV642
Other Parts Discussed in Thread: SN65LVDS22

Hello experts,

I have question for 6 pairs LVDS MUX solution.

Can TS3DV642 support 6 pairs LVDS MUX solution like as below?

Yellow: Input, Green: Output A, Light blue : Output B

If you have any other recommend device or solution, could you tell me?

Thanks and best regards,

Ryo Akashi

over 5 years ago

0 Brian Zhou over 5 years ago

TI__Guru*** 145355 points

no, SCL/SDA is only for low speed signal and not differential

0 Ikechukwu Anyiam over 5 years ago

TI__Mastermind 35130 points

Hi Ryo-san,

You can only use the +/-ve pins for LVDS (reference pin functions table in the datasheet). You'll need at least 2 of these devices to mux 6 LVDS pairs. A simpler solution would probably be using 3 SN65LVDS22 repeaters, but it looks like this device is more expensive.

Regards,

I.K.

0 Ryo Akashi over 5 years ago in reply to Brian Zhou

TI__Genius 9470 points

Hello Brian-san,

Thank you for your reply.

I thought we can use SCL/SDA because these have similar Ron with D0A~D3A.

Could you tell me what parameter is different?

Thanks and best regards,

Ryo Akashi

0 Ryo Akashi over 5 years ago in reply to Ikechukwu Anyiam

TI__Genius 9470 points

Hello I.K.-san,

Thank you for you reply.

Could you tell me what is the difference between +/- ve pin and other pin?

From Figure 20. Logic Diagram and Ron, I'm not sure the difference.

Also, thank you for your suggestion.

Thanks and best regards,

Ryo Akashi

0 Ikechukwu Anyiam over 5 years ago in reply to Ryo Akashi

TI__Mastermind 35130 points

Hi Ryo-san,

SCL, SDA, HPD, and CEC are not differential inputs and have different architectures. For example, SCL/SDA are DDC/I2C pins. You can't connect LVDS to I2C/DDC.

Regards,

I.K.

0 Ikechukwu Anyiam over 5 years ago in reply to Ryo Akashi

TI__Mastermind 35130 points

Hi Ryo-san,

Sorry, it looks like I was mistaken about these pins. You are correct that there is no difference between +/- ve pins and the other pins. It looks like SCL, SDA, HPD, and CEC are not actually specific to I2C/DDC or other HDMI signals, but are only labeled differently to match up with HDMI applications. They can still be used mux LVDS signals. Please see here for more details: https://e2e.ti.com/support/switches-multiplexers/f/388/p/436201/1707024#1707024

Sorry for any confusion.

Regards,

I.K.

0 Ryo Akashi over 5 years ago in reply to Ikechukwu Anyiam

TI__Genius 9470 points

Hello I.K.-san,

Thank you for your reply.

OK, I understand we can use SCL/SDA HPD/CEC for LVDS signal.

Thank you for your comment.

Thanks and best regards,

Ryo Akashi

Interface

Interface forum

TS3DV642: 6 pairs LVDS MUX