External xlink delays
Posted: Tue Dec 04, 2018 9:58 am
I have a board with several external 2-wire xlinks between XL216-TQ128 processors (unfortunately I can't do 5 wire as there aren't enough I/O ports and I can't use BGA devices in this design).
I need these links to run as fast as possible. The tracks are about 10mm long with no damping resistors (yet, though I suspect they may be needed in future). I've run some experiments which ran successfully at a delay in the XN file of 2, but the specs suggest a minimum of 3, if not 4.
Has anyone else run external xlinks at delays of 3 or 4 with success? Or had problems doing so?
I need these links to run as fast as possible. The tracks are about 10mm long with no damping resistors (yet, though I suspect they may be needed in future). I've run some experiments which ran successfully at a delay in the XN file of 2, but the specs suggest a minimum of 3, if not 4.
Has anyone else run external xlinks at delays of 3 or 4 with success? Or had problems doing so?