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Newbie
Newbie
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Registered: ‎11-17-2019

Can I use differential HSTL 1.2 V to drive LVDS?

hi,

i want to connect mipi camera via FMC connector in the Xilinx ZCU106 EVB (w MPsoc Uscale+).

in order to do so, i need to configure the FMC voltage banks to 1.2V (FMC_Vref). this is why i have this 1.2V limitation...

i also need to output via the FMC connector Camera link, meaning using LVDS.

can i use diff HSTL 1.2V from the MPSoC to drive LVDS (actually, the diff HSTL will drive an LVDS cable driver reciver - DS25BR440).

 

thanks

 

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Teacher
Teacher
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Registered: ‎07-09-2009

What you need to do is check :

   the transmiter has a V0h and VoL max and min

      the receiver has VIh and VIl max and min,

Look here for TTL as an example

https://www.allaboutcircuits.com/textbook/digital/chpt-3/logic-signal-voltage-levels/

You draw two vertical  lines like in the first diagram, 

     add to that the range that the transmiter can drive over , and the reciver can receive over,

         if the two overlap , like in the picture, then you have a workign system,

Remeber the termination, as its differential and fast

 

.

 

 

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