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IO standard interface problem #3

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Takayama-Lissajous opened this issue Dec 28, 2018 · 1 comment
Open

IO standard interface problem #3

Takayama-Lissajous opened this issue Dec 28, 2018 · 1 comment

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@Takayama-Lissajous
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Takayama-Lissajous commented Dec 28, 2018

I have adopt about different IO standard.

MIPI CSI 2 has 200mv swing voltage at HS mode**(SLVS200)**

but, is it possible to capture these low voltage differential signal with FPGA?

I think that FPGA lvds 2.5V VCCIO IO standard doesn't capture these low voltage differential signal(MIPI)

I reviewed Kicad board design. but I can't find any level shifter IC. Clock lane and data lanes connected
directly LVDS IO pads...

@daveshah1
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In practice, I have always found that LVDS inputs on FPGAs support a low enough differential swing that they receive MIPI signals fine. This has been tested on Virtex-6, Kintex-7 and iCE40.

Some FPGAs do have dedicated MIPI input support, such as the ECP5 and UltraScale+, but the main use of that would be being able to receive both the LP and HS signals.

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