Hi, I would like to return to the subject of the audio FCC connector . I keep thinking about the use of an external DAC with two independent clock 22.xx and 24.xx. Im considering designing the muxer/switch and use SPI interface to drive DAC filter.
1. Can I use one of the schematics from 'this' (http://www.eetimes.com/document.asp?doc_id=1202359) website. Which one will be better -1' Simple Implementation of a clock switch'- or -3 ' Glitch protection for unrelated clock sources'- ? 2. What chip(s) to use to make this muxer? 7400 series? (SN74LVC1G04, SN74LVC74, HC7408 and 74LVC1G02) 3. Where on the Carrier board is a FCC audio connector? If possible , please attach the part of the photo where this connector is located and where is pin 1. 4. As a DAC I'm going to use DF1706 and 2xPCM1704 . Do the SPI signals from pins :15 MC, 16 MOSI, 17 MISO would be able control DF1706 filter? In particular, whether it will be possible to control the oversampling ratio? For example, for streams with sampling rate upto 48kHz set oversampling 8x and for files above 48kHz set to 4x?. Thanks, Bern ------------------------------------------------------------------------ bernid's Profile: http://forums.slimdevices.com/member.php?userid=37408 View this thread: http://forums.slimdevices.com/showthread.php?t=97881
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