Digital converter, ADAT/TDIF to 8 x SPDIF I/O

I want to know where to find a :

ADAT/TDIF to 8 x SPDIF & 8 x SPDIF to ADAT/TDIF converter

Is this possible at all ?

Do you have a DIY project or link ?

I want to use this converter for expanding my number of spdif i/o, in order to use my hardware effect machines (with spdif i/o) with my DAW and getting more i/o for extra cd´s, dat´s etc.

My soundcard Motu 2408, and i want to use a ADAT or a TDIF I/O to convert to spdif (on phono plugs)

Thanks a lot

Sincerly

Henning Flintholm