Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter - Page 284 - diyAudio
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Old 16th June 2013, 09:40 PM   #2831
qusp is offline qusp  Australia
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what firmware version and board revision of fifo have you got?

could you have accidentally changed the Si570 frequency range from the default: Group 4?

Amanero has not always proven to be the most cooperative in sync mode with the highest resolutions (are you using ackos reckock?) we need pics

how have you connected to BII?

are all the connections from fifo to BII the same length?

how long are they?

have you definitely disabled the power for the onboard clock on the BII?

what frequency indicator LED on the Si570 board is lit?
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Old 17th June 2013, 01:11 AM   #2832
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qusp, thanks for your input!

what firmware version and board revision of fifo have you got?

- newest, from GB IV

could you have accidentally changed the Si570 frequency range from the default: Group 4?

- just checked, it's on 4

Amanero has not always proven to be the most cooperative in sync mode with the highest resolutions (are you using ackos reckock?) we need pics

- no, straight from Amanero to FIFO with under two inch cable

how have you connected to BII?

- see pics

are all the connections from fifo to BII the same length?

- yes

how long are they?

- 6 inch, from Ian

have you definitely disabled the power for the onboard clock on the BII?

- yes

what frequency indicator LED on the Si570 board is lit?[/QUOTE]

- 90khz when playing 352khz and 98khz when playing 384khz files

So apparently the signals leaves the Si570 intact, then something might be wrong from there on. Maybe you can spot something!?
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Old 18th June 2013, 11:21 AM   #2833
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Have you tried slow roll off mode?
When my synchronous FIFO and BII picked strange noise at DXD 352.8khz playback, slow roll off solved that.
And, changing DPLL bandwidth under sharp roll off mode also changed the noise behavior.

However, this might not to be the kind of solution you want...
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Old 18th June 2013, 12:20 PM   #2834
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Thank you wktk!
Played with both switches now to test, but no music still!
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Old 18th June 2013, 01:56 PM   #2835
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Have checked power supply voltage while trying 352.8k or higher SR playback?

At least, 1.2V supply of ES9018 consume more current as SR increase.
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Old 18th June 2013, 02:59 PM   #2836
palmito is offline palmito  United States
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Default Dual clock board question

Please excuse my ignorance. To use the u.fl connectons out of the dual clock board I don't have to do anything extra (i.e., output is always available at both J3 & J7/J8/J9)? I could not get a dac to work using u.fl and J7-8-9 but it works fine with J3 and regular cables. I am pretty sure it's the dac, but just wanted to verify I did not miss anything obvious. I didn't use MCLK from the dual clock board.
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Old 18th June 2013, 04:06 PM   #2837
qusp is offline qusp  Australia
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yes its available at both, what DAC?
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Old 18th June 2013, 04:26 PM   #2838
palmito is offline palmito  United States
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Quote:
Originally Posted by qusp View Post
yes its available at both, what DAC?
Subbu/JP ES9023 V3 beta, I populated the dac side (nothing on the spdif side) and used the u.fl connectors to J7-8-9 but never got any sound, works fine with pins and cable to J3. Probably something I did wrong on the dac side. Thanks for the quick answer qusp.
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Old 18th June 2013, 04:36 PM   #2839
qusp is offline qusp  Australia
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no problem,

got pics? I remember their u.fl connections were a bit like an afterthought, grounding looked odd, the shells of the connectors are definitely grounded at the DAC end?
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Old 18th June 2013, 09:17 PM   #2840
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Quote:
Originally Posted by wktk_smile View Post
Have checked power supply voltage while trying 352.8k or higher SR playback?

At least, 1.2V supply of ES9018 consume more current as SR increase.
Thanks a lot wktk! You've nailed it with this one!

The 1.2V Trident just goes on it's knees on everything over 192khz, it goes down to 0,86V. Had to raise the voltage on Placid all the way to 6V to get around 1V out of Trident - just to confirm it playing.
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