how to connect 3 boards for flexray test

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how to connect 3 boards for flexray test

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boyoungmun
Contributor I

Hi

 

I would like to set the test environment using 3 MPC5646C boards for verify flexray that has 3 nodes.

Is it possible? If possible, I wonder how to connect 3 boards.

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

there are several possible bus topologies. You can see that, for example, here:

FlexRay - Topology | Cypress Semiconductor 

Or you can read directly the physical layer spec:

http://tge.cmaisonneuve.qc.ca/barbaud/R%C3%A9f%C3%A9rences%20techniques/Protocoles%20%C3%A0%20tranch...

Regards,

Lukas

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boyoungmun
Contributor I

Hi Lukas,

 

If I connect 3 boards using “active star coupler”, is additional evaluation board that mounted active star (e.g TJA1080) needed?

If yes, is it possible to use XPC5646C as active star? Does NXP have the active star board?

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lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

we do not have such board. The easiest way is to use passive star bus topology - you don't need additional HW.

Regards,

Lukas

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