CS8420 serial in-> spdif out. - Page 2 - diyAudio
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Old 19th March 2003, 11:09 AM   #11
Achimek is offline Achimek  Germany
diyAudio Member
Join Date: Mar 2003
Location: Aachen
perhaps it it usefull to apply a masterclock to omck. if you take the recovered clock, the device will not start up correctly, because ther is an initialisation routine configuring the device. i think this routine does not start because tere is no valid clock, perhaps rmck is an input or tree state at startup and it never intializes itself. try to connect the signal of pin 31, it should be the masterclk of the cs4226 or better an oszillator with 24,564 Mhz.

good luck
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Old 21st March 2003, 01:15 PM   #12
A 8 is offline A 8  Sweden
diyAudio Member
Join Date: Mar 2003
Location: Gothenburg
Thx Achimek!

You were spot on....I feel a bit stupid for missing it.
Anyway it works perfect and for those considering doing the same, the motorola dsp talkes to the Cirrus dac chip through I2S in all formats DD, DTS and PCM in my pioneer AV Reciever.

Just hoping I am not loosing any bits
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