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Old 12th July 2021, 03:04 PM   #1
spresto9 is offline spresto9  United Kingdom
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Join Date: Nov 2004
Location: essex
Default S/PDIF Transceiver faulty??

Hi All,
I have a s/pdif transceiver connected to my Cronus to convert to s/pdif
having caerfully studied the manual and data sheet for the 8804
and double checked the connections and switch settings (all as manual)
I have silence.
The only way to get any sound out of s/pdif is to set the Transceiver to slave (AIF/MS low) and connect MCK from Cronus to SCK on ransceiver, this results in extremely distorted music on s/pdif out.
All the led's stay the same no matter what the settings or connections.
see Cronus > S/PDIF Transceiver problem

My question is could this be a faulty clock on the board?

Cheers Steve
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Old 14th July 2021, 07:42 PM   #2
BrianDonegan is offline BrianDonegan  United States
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S/PDIF Transceiver faulty??
Sorry... the labels for AIFCONF0 and AIFCONF1 are reversed on these new boards. Try swapping those.
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Old 15th July 2021, 06:02 PM   #3
spresto9 is offline spresto9  United Kingdom
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Join Date: Nov 2004
Location: essex
Hi Brian,
I have tried that, I have checked the settings directly at the chip pins to be sure the logic is correct.
Are the settings and conections in the transciver manual correct to connect to cronus
DCK - BCK
D1 - LRCK
D2 - DIN
GND - GND
Thanks Steve

Last edited by spresto9; 15th July 2021 at 06:04 PM. Reason: add info
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Old 17th July 2021, 12:28 PM   #4
spresto9 is offline spresto9  United Kingdom
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Join Date: Nov 2004
Location: essex
Hi Brian

Quick update, these are the measured iogic voltages, the 42mv looks wrong to me any thoughts?

Vol.jpg

Thanks Steve

Last edited by spresto9; 17th July 2021 at 12:28 PM. Reason: typo
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