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Old 28th June 2011, 02:28 PM   #1861
Bunpei is offline Bunpei  Japan
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... I have been able to do the same via XMOS for quite a while now. ... I have also experimented with generating the bit clock and word clock by dividing the master clock. Which worked well, but requires two master clocks.
Oh, you have already achieved a stable play of 384 kHz/32 bit sources with OSF=ON, Jitter Reduction=ON, DPLL BW ="the lowest" on your Buffalo II/80 MHz/100 MHz. It's great!
Is the XMOS-based USB interface capable of seamless play of 44.1 kHz to 384 kHz without changing its wiring or configuration?

Anyway, I've been actually waiting for your X-MOS product for more than one year without buying other similar kits.
I really hope your superior product is realized immediately and many people can reproduce the sound you already have and enjoy it.

By the way, Chiaki's approach is one master clock for one sampling frequency series approach.
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Old 28th June 2011, 02:37 PM   #1862
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Quote:
Originally Posted by Bunpei View Post
By the way, Chiaki's approach is one master clock for one sampling frequency series approach.
So you mean he is only using 48khz multiples?
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Old 28th June 2011, 05:07 PM   #1863
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So you mean he is only using 48khz multiples?
One oscillator is employed for 44.1 kHz series and another for 48 kHz series.
Totally two oscillators. Nothing more. Is it the same configuration to yours?
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Old 28th June 2011, 05:10 PM   #1864
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Yes. Then using the selected clock to generate the clocks for PCM.

In this case you would not use the 80 or 100Mhz clocks on the Buffalo.

The reason this works is because the DPLL is basically doing nothing now, or rather it can't help but be in synch
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Old 28th June 2011, 05:23 PM   #1865
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... or rather it can't help but be in synch
I think we can call it as a "synchronous mode".
When a transport can send I2S signals of high quality enough , the mode may yield better results.
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Old 28th June 2011, 09:46 PM   #1866
PHEONIX is offline PHEONIX  Australia
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Hello guys

The Buffalo II board what pic micro is used.

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Old 28th June 2011, 10:07 PM   #1867
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Its not a PIC, is AVR Atiny type microcontroller.
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Old 28th June 2011, 10:19 PM   #1868
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Old 29th June 2011, 07:29 AM   #1869
PHEONIX is offline PHEONIX  Australia
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ATTiny85
Hello Russ

Does that use an external crystal clock.

May I ask why you left microchip micros.

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Old 29th June 2011, 01:02 PM   #1870
PHEONIX is offline PHEONIX  Australia
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Hello Bumpie

You mention "Copper foil & Polyphenylene Sulfide(PPS) Film Capacitor" can I ask you what is the brand of this part and are they still available.

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Arthur
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