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SPell2
Beginner
2,215 Views

PS8203 function and similar product

Hi,

I am studying Intel Joule expansion board schematic because I need to realize a custom version of it for my application. I found that a level shifter IC is used for HDMI output, the PS8203 by Paradetech. I am wondering if level shifting is applied only to HPD and I2C signals or also HDMI lanes have to be shifted from 1.8V to 3.3V. Since I found difficulties to get some information from Paradetech, is there any other IC that you suggest that can perform this functionality?

Thank you very much,

Sandro

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6 Replies
idata
Community Manager
106 Views

Hi Sandro,

 

 

Thank you for contacting us.

 

That's a good question, the PS8203 is used in the HDMI lanes too, if you check this link you will see that these signals are shifted from 1.8V to 3.3V in the Intel® Joule™ Expansion board: https://software.intel.com/en-us/node/731164

 

 

About your question of a similar product, we don't have information about it, but I think that you can try to contact Parade, maybe they will be able to provide you the information that you are looking for about the level shifter. The website for Parade support is https://www.paradetech.com/products/ps8203-8204/.

 

 

I hope you find this information helpful.

 

 

Have a nice day.

 

 

Regards,

 

Leonardo R.
SPell2
Beginner
106 Views

Hi Leonardo,

As you suggest I contacted Parade, but I'm afraid that for extremely small quantities there will be some issues.

For now, I'm doing some alternative researches and find out this IC by NXP: http://www.nxp.com/documents/data_sheet/PTN3363.pdf http://www.nxp.com/documents/data_sheet/PTN3363.pdf

Apparently it shifts up AC coupled differential signals from 1.8V to 3.3V, maybe similar to what is performed by the PS8203. On the other side it seems to operate at 3.3V for the I2C communication on the Joule side, and HPD too: I think these signals have to be shifted down to 1.8V to be Joule compatible (maybe via the LSF0108RKSR level shifter used in the expansion board).

Could you please help me clearing this doubt and tell if PTN3363 is a suitable substitute for PS8203?

Thank you very much,

Regards,

Sandro

idata
Community Manager
106 Views

Hi Sandro,

 

 

Personally, I think that level shifter may work, but I can't assure you this, just take care of the voltage level.

 

 

Unfortunately, any question related to custom boards or alternative options of components in our products is beyond of our support scope, and we can't suggest a substitute for the PS8203.

 

 

Nevertheless, we encourage you to try to implement the PTN3363 and post your results here, it will definitely be really useful for the community.

 

 

Have a nice day.

 

 

Regards,

 

Leonardo R.
ZZhu11
Beginner
106 Views

Hi Leonardo,

I have read your reply for Sandro. Could you tell me whether the PTN3363 can support 4K2K 30Hz for DP to HDMI Dongle application.

Thank you very much, wait your reply.Have a nice day.

Regards,

Zhuzhou

idata
Community Manager
106 Views

Hello Zhuzhou,

 

 

Unfortunately, we don't have information about the PTN3363, the best recommendation that I can give you is to contact the manufacturer for more information.

 

 

Have a nice day.

 

 

Regards,

 

Leonardo R.
idata
Community Manager
106 Views

Hi Sandro,

 

 

I just want to let you know that we have posted information about the HDMI level shifting in the site, maybe it can be very helpful for you, so please check the following links:

 

 

This link offers insight to passive termination:

 

https://software.intel.com/en-us/node/737183

 

 

The table in this link lists the module pin number, signal name, signal direction from the module's perspective, and general description of the signal:

 

https://software.intel.com/en-us/node/731164

 

 

Have a nice day.

 

 

Regards,

 

Leonardo R.
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