Now switching one PLL between the two decoder units. I could tear apart
the decoders to also switch the data signals and use only one decoding
unit, but I just don't have the time or the will to do that right now.
I'll write my own decoder unit anyway.
It's looking bad for a single PLL transceiver design (across two banks),
it will either fail in the mapping stage or produce very bad timing.
Packing everything in one bank will be difficult to place on a (two
layer) PCB.
I guess I will have to drop one receiver and redesign the whole board or
use the LX45 and 4 layer board after all, which will more expensive than
expected.