Saturday, 2 December 2017

Toslink (fiber optic) connectors not working


I built this quick test circuit before I start implementing a switch with multiple receivers and it isn't working correctly. The transmitter appears to be working (I can see the red light on) but when I connect my stereo receiver to the transmitter and my DVR to the receiver I get no sound (tested both cables and they are not the fault).


PLR135/T10 Receiver Datasheet. PLT133/T6A Transmitter Datasheet


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My only worry is that Pin 1 has swapped locations between the receiver and transmitter even though the manufacturer is the same. I double checked the datasheets and I believe my schematic is correct with the swapped Pin 1 locations.



Answer



Figured out the problem. Vout and Vcc were backwards for the receiver--datasheet must be wrong or their way of showing the pinouts is wrong. Sound is coming out and working perfectly now


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