You then need to use a upsampling chip like PMD100 or something similar, or some conversion logic.
Patrick
Patrick
Need help!
How to connect the IS2 from QA550 to TDA1541A DAC?
I’m using TAD 1541A, it only have connection as below:
1) LE/WS
2) BCK
3) DATA L/DATA
4) DATA R/SCK
5) GRND (A)
6) GRND (D)
Whereas on QA550, it have
1) LRCK
2) DAT
3) BCK
4) MCK
5) GND
So MCK shall connect to LE/WS?
LRCK to DATA R/SCK??
How to connect the IS2 from QA550 to TDA1541A DAC?
I’m using TAD 1541A, it only have connection as below:
1) LE/WS
2) BCK
3) DATA L/DATA
4) DATA R/SCK
5) GRND (A)
6) GRND (D)
Whereas on QA550, it have
1) LRCK
2) DAT
3) BCK
4) MCK
5) GND
So MCK shall connect to LE/WS?
LRCK to DATA R/SCK??
Please check the datasheet!
MCK is master clock and WS is word select.
Connect LR clock to WS
Data to Data
MCK to BCK
MCK is master clock and WS is word select.
Connect LR clock to WS
Data to Data
MCK to BCK
> MCK to BCK
Really ?
MCK of the QA550 is at 11.28MHz.
Suggest you email QLS directly for a schematics to connec to your type of DAC.
I did. And they replied within days with a schematics.
Patrick
Really ?
MCK of the QA550 is at 11.28MHz.
Suggest you email QLS directly for a schematics to connec to your type of DAC.
I did. And they replied within days with a schematics.
Patrick
Well thats how I connected it to TDA1541 and it worked fine, oh hang on,
LOL gosh, that was a brain fade moment, typo, or should I call that a braino.
BCK to BCK. ha ha.
LOL gosh, that was a brain fade moment, typo, or should I call that a braino.
BCK to BCK. ha ha.
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Thanks guys.
Just received feedback from QLS.
LR -->LE/WS
DATA-->DATA L
BCK->BCK
MCK leave unconnected.
Will try out and see as i'm using NOS mode with no reclock.
Just received feedback from QLS.
LR -->LE/WS
DATA-->DATA L
BCK->BCK
MCK leave unconnected.
Will try out and see as i'm using NOS mode with no reclock.
Whether it is possible to replace display QLS 550 on such two
NHD-0108FZ-FL-YBW-3V3 NHD-0108FZ-FL-YBW-3V3 [84.0mm x 44.0mm] - $9.00 : Newhaven Display International, Inc., High Quality Standard and Custom LCDs and VFDs.
NHD-0108FZ-FL-YBW-3V3 NHD-0108FZ-FL-YBW-3V3 [84.0mm x 44.0mm] - $9.00 : Newhaven Display International, Inc., High Quality Standard and Custom LCDs and VFDs.
32Gb cards
Hi,
I got one of these and just started to modify it. I'm wondering if it can support a larger screen with more characters ? Anyone tried ?
So far I've used it with a Sandisk Extreme III 16Gb sdhc, a class 4 Sandisk micro-sdhc and an A-Data 32Gb class 10 micro-sdhc. All good.
Here's a picture of the mods so far.
The Rubycon 470uF 25V cap is replaced with Sanyo 470uF 16V - a tight fit. The 2ppm TCXO is replaced with Vanguard 0.3ppm. I don't know what the ps/phase noise of these two are but there is more definition with the Vanguard. The input rectifiers are removed and a Sanyo 100uF 16V input cap is added across input voltage, followed by series ferrite bead, and then Vishay MKP 3n3F to create a Mhz filter.
Once these changes have burned in and the sound has become familiar, I'll try some better regulation.
Cheers,
Tom
Hi,
I got one of these and just started to modify it. I'm wondering if it can support a larger screen with more characters ? Anyone tried ?
So far I've used it with a Sandisk Extreme III 16Gb sdhc, a class 4 Sandisk micro-sdhc and an A-Data 32Gb class 10 micro-sdhc. All good.
Here's a picture of the mods so far.
The Rubycon 470uF 25V cap is replaced with Sanyo 470uF 16V - a tight fit. The 2ppm TCXO is replaced with Vanguard 0.3ppm. I don't know what the ps/phase noise of these two are but there is more definition with the Vanguard. The input rectifiers are removed and a Sanyo 100uF 16V input cap is added across input voltage, followed by series ferrite bead, and then Vishay MKP 3n3F to create a Mhz filter.
Once these changes have burned in and the sound has become familiar, I'll try some better regulation.
Cheers,
Tom
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Yes, thanks, and I know about the forum http://en.pic16.com/mcu/forums61/forum.asp?FORUM_ID=7
...and I'd also like to know about anyone's experience of trying .... have you tried ?
...and I'd also like to know about anyone's experience of trying .... have you tried ?
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...anything substantially larger than the original ? I gather it won't support anything other 8x2, but I'm sitting 2m away so I'd like something easily visible....so I'm thinking a 2" high, 4" wide display with backlight. Possible ? 58mm x 32mm is the biggest I've seen so far.
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Talk to QLS.
He will get you what you want, even a tailored solution.
He is not even far from where you are.
Patrick
He will get you what you want, even a tailored solution.
He is not even far from where you are.
Patrick
The way character LCDs behave, any change in format (eg 8x2 to 16x2) will require firmware changes. I have seen "large" 20x4 displays where the characters are larger, but I have not yet seen large 8x2 LCDs
If you can change the software, you get to display e.g. 2x16, and then you can use VFD as large as you care to pay for.
Patrick
Patrick
Hi,
Thanks for the replies guys - it seems I will have to give the bigger screen a miss as I can't find anything larger either. I've posted this in the QLS forum just in case. I wonder if a blue/white w/backlight will be easier to read from a distance....
I can't write firmware - I can't even manage i2c code - the best I ever managed was some Fortran and Basic many years ago. I have an src4193 project on hold for years now because I'm stuck with coding it.
BTW, the Vanguard seems to have had a positive effect - before, the sibilance on female vocals was a little hissy, mushy and overblown. Now it's tighter and more defined and there's more resolution everywhere. It's subtle but appreciably better. I still find the sound to be a little too "digital" at the top end but I expect that is the CS8406 and spdif output. I intend to remove the optical output and add an rj45 socket for I2S and feed that into an AMB y2.
I ordered a 74VHC to buffer the I2S but I've never used one of these before so I'm not 100% confident about how best to connect it up. I'll give it a go and post some pics.
Thanks for the replies guys - it seems I will have to give the bigger screen a miss as I can't find anything larger either. I've posted this in the QLS forum just in case. I wonder if a blue/white w/backlight will be easier to read from a distance....
I can't write firmware - I can't even manage i2c code - the best I ever managed was some Fortran and Basic many years ago. I have an src4193 project on hold for years now because I'm stuck with coding it.
BTW, the Vanguard seems to have had a positive effect - before, the sibilance on female vocals was a little hissy, mushy and overblown. Now it's tighter and more defined and there's more resolution everywhere. It's subtle but appreciably better. I still find the sound to be a little too "digital" at the top end but I expect that is the CS8406 and spdif output. I intend to remove the optical output and add an rj45 socket for I2S and feed that into an AMB y2.
I ordered a 74VHC to buffer the I2S but I've never used one of these before so I'm not 100% confident about how best to connect it up. I'll give it a go and post some pics.