Real geometry: CORE3588 copper, drawn from our board file (2D plan view)
Top copper, 5 x 4 mm in the middle of CORE3588, where camera 2's lanes run from its connector to the compute module. Drawn from the board file; the highlighted pair is MIPI_DPHY1_RX_D0P / D0N.
1One differential pair: camera data lane D0, the two wires P and N, each 0.12 mm wide with a 0.14 mm gap between them.
2A small bump in one wire adds length so P and N arrive at the same moment (they may differ by at most 0.15 mm).
3Another pair of the same camera (grey), with its own matching bump.
Real image: CORE3588, rendered by KiCad from our board file
The same 5 x 4 mm as the fab will make it (KiCad 3D render).
1The same length-matching bump, as it will look under the green solder mask.
How it works
Where it fits
USB (D+/D-), camera and display lanes (MIPI) and PCIe all use pairs. Their impedance (90 ohm for USB, 100 ohm for MIPI) depends on the width and gap, and on the ground plane underneath.