5578 - CrossLink: Can Hard D-PHY blocks be configured for more than 4 lanes?
Description:This FAQ explains why Hard D-PHY blocks cannot be configured for more than 4 lanes in CrossLink product.
Solution:
In CrossLink product, there are 2x 4-lane D-PHY.
Each of the 4-lane D-PHY runs on its own clock and has its own clock domain.
These 2 clock domain, even if they run on same overall frequency, do not align or runs instantaneous frequency (due to PLL frequency jitter).
Therefore, the 2x 4-lane D-PHY cannot be cascaded in width to be 8-lane D-PHY.