Looking to learn how to use Ethernet, what do I need to run the example code?

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Looking to learn how to use Ethernet, what do I need to run the example code?

525 Views
Poley
Contributor IV

Hi,

I have a S32K148-176 Rev B and a ADTJA1101-RMII adapter card.

Is this enough to make a running example? Where does the twisted wire from the Ethernet board goto? Can’t find what I need to do on that end anywhere.

Thanks!

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

either use some automotive ethernet media converter, so you can connect the board to your PC or you can use typical setup as shown on this page:

https://www.nxp.com/design/development-boards/analog-toolbox/tja1101-automotive-ethernet-adapter-for...

Take a look at the photos on the right side, TC-10 Starter Kit.

Some useful details can be found on this thread:

https://community.nxp.com/t5/S32K/S32K148EVB-ADTJA1101-RMII/m-p/802218

Regards,

Lukas

 

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Poley
Contributor IV

Hi @lukaszadrapa 

Thank you for the reply!

What kind of adapter would work? I cant see where to purchase a TC-10 starter kit.

Would something like this be adequate to use with supplied twisted wires to work (between RMII and PC)? - https://cpc.farnell.com/tp-link/mc100cm/media-converter-multi-mode-fast/dp/CS26387?mckv=shaan2B7L_dc...

Also, in that thread you sent is that working with a automotive ethernet media converter or a TC-10, I can't tell. 

Thank you!

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

that's something different, you need a converter between 100BASE-T1 and 100BASE-TX. For example this one:

https://phytools.com/products/100base-t1-media-converter

That's the first one I found on the web, I'm sure there are many other options.

Regards,

Lukas

 

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Poley
Contributor IV

Hi @lukaszadrapa 

Thank you, unfortunately a bit out of my price range currently so I will have to look around (Or for a UK supplier)

In the one you linked for example where would the two twisted wires coming out of the RMII board connect to? I'm guessing 4 and 5.

Would this work? Seems to be 100BASE-T1 and 100BASE-TX -  https://www.mouser.co.uk/ProductDetail/Microchip-Technology/EV02N47A?qs=bAKSY%2FctAC58%2F79HxLqtYQ%3...

Thanks!

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

yes, pins 4 and 5 are the right ones.

The second option you found seems to be good option too, I can see no problem here.

Regards,

Lukas

 

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Poley
Contributor IV

Hi @lukaszadrapa 

I will get that then, thank you!

just wondering, is it possible to use the TJA1101 to output 4 pin 100BASE-T straight from the chip rather than outputting 2 wire automotive 100BASE-T1 which needs converting?

thank you for the help! 

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lukaszadrapa
NXP TechSupport
NXP TechSupport

No, that's not possible. That's the reason why converter is needed.

Another options would be to not use TJA1101, but directly PHY for 100BASE-TX.

Regards,

Lukas

 

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Poley
Contributor IV

Hi @lukaszadrapa 

Ah ok so the JA1101A chip can only produce 2 wire automotive 100BASE-T1 and can’t produce 4 wire? (When it’s not on the dev board)

What parts would I need to partner with the S32K148 to be able to send data over Ethernet 100BASE-T 4 wire?

really appreciate the help!

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lukaszadrapa
NXP TechSupport
NXP TechSupport

You would need own card instead of ADTJA1101. We do not provide such card, we are not manufacturer of 100BASE-TX transceivers. One example of such PHY is DP83848C which is used on some NXP EVBs.

But more convenient solution is to use mentioned media converter, especially if you already have ADTJA1101.

Regards,

Lukas

 

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431 Views
Poley
Contributor IV

Hi @lukaszadrapa 

Thank you, I will look at that chip. I have also seen the Wiznet W5500.

my plan is to have 8 S32K148’s and 8 RJ45’s so I think that might add up to too much money if I need a converter for each S32K board

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