[Milkymist-devel] M1r4 review: video in (was Re: Ask for reviews on M1R4 draft (was Re: M1R4 draft schematics))

[Werner Almesberger]

The last of the "easy" sheets: the video decoder.

- there are numerous unused inputs that are left floating.
  Shouldn't we rather ground them ? E.g., Ain1-3 to AGND, and
  HS_IN/VS_IN to DGND.

- should we connect SOG/SOY ? At 6400% magnification, the value
  of the capacitor connecting it to Y/G looks like 1 nF. Also
  the ADV7181D, where AD made a less determined effort at
  obfuscating the example circuit, uses 1 nF.

I suppose the load capacitors for Y2 with 33 pF each are
sufficient for the 20 pF required, considering parasitic
capacitances.

- Werner