I’m trying to route ethernet connection differential pairs from a small pitch (0.4mm) connector to a standard RJ45 socket.
Board stackup is 4 layer 1.6mm with 0.22 mm distance between ground plane an external plane.
Tracks netclass for this diff pair should be 0.25mm wide / 0.25mm clearance to match required impedance.
If I add ethernet related tracks to such a netclass I cannot start drawing because DRC immediately stops me (in every drawing mode)… on previous Kicad release there was a disable automatic DRC/ERC icon. I used to disable DRC then route some millimeters of track to get out of the connector and then re-enable it and route the remaing differential pair… how can I do it now ? I cannot find a way to disable DRC check.
I can set the differential pair so it match such connector pad settings and also match impedance but this result into a dielectric height of 0.11mm that’s not what I want and anyway I could have similar issues with USB and camera tracks I need to route on the same board.
Version info dump:
Application: KiCad x64 on x64
Version: 7.0.5, release build
Libraries:
wxWidgets 3.2.2
FreeType 2.12.1
HarfBuzz 6.0.0
FontConfig 2.14.1
libcurl/7.88.1-DEV Schannel zlib/1.2.13
Platform: Windows 10 (build 19045), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
Date: May 27 2023 02:48:13
wxWidgets: 3.2.2 (wchar_t,wx containers)
Boost: 1.81.0
OCC: 7.6.3
Curl: 7.88.1-DEV
ngspice: 40
Compiler: Visual C++ 1936 without C++ ABI
Build settings:
KICAD_SPICE=ON