Data Flow Block Diagram - Yamaha MU90R Owner's Manual

GUIDED TOUR
When HOST SELECT switch is set to MIDI (31,250 bps):
When HOST SELECT switch is set to
PC-1/MAC (31,250 bps) or PC-2 (38,400 bps):
3 4
TO HOST IN-B
Sound
Module
A1~16CH
TO HOST IN-B
Sound
Module
A1~16CH
IN-A OUT THRU
Sound
Module
B1~16CH
IN-A OUT THRU
Sound
Module
B1~16CH