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Old 7th January 2004, 01:53 PM   #1
jmar is offline jmar  United States
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Default Keces.com PCM2702

The DAC kit made bu "Keces.com"......
Can anyone tell me how I can purchse this?

Is just the PCB and chip available?


Also...

Is the PCM2902 pin for pin compatible with the PCM2702?
What are the differences between these chips?

THANKS!
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Old 7th January 2004, 02:04 PM   #2
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http://focus.ti.com/docs/prod/folder...t/pcm2902.html
http://focus.ti.com/docs/prod/folder...t/pcm2702.html

You may do the comparison on your own.
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www.holgerbarske.com - Deutschsprachiges Paradise-Support-Forum
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Old 7th January 2004, 02:50 PM   #3
MCLL is offline MCLL  Hong Kong
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KECES

korping_chang@pchome.com.tw <korping_chang@pchome.com.tw>
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Old 7th January 2004, 03:57 PM   #4
Maniac is offline Maniac  Taiwan
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The difference between those chip can be made simple by one feature... SpctAct USB interface.

This is a rather interesting (and good) interface designed by BurrBrown Japan. Simply speaking, it allows very precise tracking of USB host clock (which itself is not very accurate) and greatly improves the sound quality. (I once saw the designer's note on the development of this chip... it is amazing the hoops he jumped through to get this chip working like it is.)

This feature combined with the other specs of this chip, makes it heads and shoulders above other chip with similar functions. Even other BB/Ti chips, including PCM 290x and PCM270x (excluding 2702 of course) series.

The Ti's datasheets made that quite clear. :P
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Old 7th January 2004, 04:00 PM   #5
Maniac is offline Maniac  Taiwan
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Ah, forgot to introduce myself. I'm the English language support staff of KECES. My e-mail (for now) is from my day job, but if you want to ask anything that's not quite apporiate here, you are free to e-mail me directly. Otherwise, post here and I'll try to check back as often as possible.


Thanks.
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Old 7th January 2004, 04:04 PM   #6
Maniac is offline Maniac  Taiwan
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Quote:
Originally posted by Maniac
The difference between those chip can be made simple by one feature... SpctAct USB interface.
Correction, it is SpAct Clock tracking, tracks the USB clock... Ti states it like the following:

"SpAct™ (Sampling Period Adaptive Controlled Tracking) system recovers a stable, low-jitter clock for internal PLL and DAC operation from the USB interface audio data."

From Ti Product info web page. This is one feature that I wouldn't do without with USB DAC products. Chips with it does not automatically become great DAC, but an USB DAC chip is cripped without it.
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Old 7th January 2004, 04:38 PM   #7
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Quote:
Originally posted by MCLL
Click the image to open in full size.


KECES

korping_chang@pchome.com.tw <korping_chang@pchome.com.tw>
-----------------------------------------------------------------
Korping

I have just looked at your site with Chinese Language support and all I got was neither English or Chinese. What is going on?
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Old 7th January 2004, 04:46 PM   #8
Maniac is offline Maniac  Taiwan
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Quote:
Originally posted by fmak

-----------------------------------------------------------------
Korping

I have just looked at your site with Chinese Language support and all I got was neither English or Chinese. What is going on?

Well, Koping is not well versed with English... so I'm here to respond questions in English... Call me Maniac or David... whichever you prefer... :P

With Chinese support, you need to install the proper support in your system before you can see it. Otherwise all you will see is a bunch of garbled ASCII code... You need Traditional Chinese support to be exact. Simpilified Chinese uses different encoding, and thus cannot be used to view the page.
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Old 7th January 2004, 06:27 PM   #9
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[With Chinese support, you need to install the proper support in your system before you can see it. Otherwise all you will see is a bunch of garbled ASCII code... You need Traditional Chinese support to be exact. Simpilified Chinese uses different encoding, and thus cannot be used to view the page. [/B][/QUOTE]
-------------------------------------------------------------
I have traditional Chinese support; in fact I am Chinese and there are no problems with other TW sites.

What to do next?
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Old 7th January 2004, 06:35 PM   #10
dhaen is offline dhaen  Europe
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Default Try this...

PC (Internet Explorer):

View-
Encoding-
Chinese Traditional

Mac (Safari):

View-
Encoding-
Traditional Chinese

It then looks like Chinese to me
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