Сan't revive SPDIF on a Tone Board

Good day! I do not quite understand Your answer and the abbreviation “SBC VIMs”. I will try to get my wiring diagram: here have a sandwich,

until the sound get only analog RCA outputs, I want to use this sandwich as a streamer into an external DAC & 5.1 Home Theatre. If I understand you correctly, SPDIF on TB only input signal, not output? Although the specification specifies these data:
%D1%83%D1%83%D1%83

My TB VIMs edition & EDGE-V (VIM Form Factor RK3399 SBC)
Thanks, Gouwa!