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Old 1st August 2006, 06:20 AM   #1
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Join Date: Feb 2005
Location: GuangZhou
Unhappy Is anybody can help me with my PCM2702

I took PCM2702 with wire in a circuit board. At first, I forgot to give 3.3V to 2 and 4 feet of PCM2702. When I connected it with USB port of computer, it appeared unknown device in my computer. At this level I remembered the status of PLAYBACK and SSPND, the LED to these two feet was normal.
When I gave 3.3V to 2 and 4 feet of PCM2702, I found the LED to PALYBACK did not brighten but the other SSPND could. I checked it many time and anywhere of the circuit, but I could not find the reason and I am very strange that the voltage in PLAYBACK foot is 3.3 always. I want to know any guys have good idea for this problem. Thanks.
Another thing, I do not very sure if I connected the correct way for the CLOCK OSCILLATOR, I checked the voltage at XTI was 1.78V and XTO was 2.8V, are there correct?
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Old 1st August 2006, 08:51 AM   #2
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Default I amend some grammar mistake

I took PCM2702 with wire in a circuit board. At first, I forgot to give 3.3V to 2 and 4 pin of PCM2702. When I connected it with USB port of computer, it appeared unknown device in my computer. At this level I remembered the status of PLAYBACK and SSPND, the LED to these two pins was normal.
When I gave 3.3V to 2 and 4 pin of PCM2702, I found the LED to PALYBACK did not brighten but the other SSPND could. I checked it many times and anywhere of the circuit, but I could not find the reason and its very strange that the voltage in PLAYBACK pin is 3.3 always. I want to know any guys have good idea for this problem. Thanks.
Another thing, I am not very sure if I connected the correct way for the CLOCK OSCILLATOR, I checked the voltage at XTI was 1.78V and XTO was 2.8V, are there correct?
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Old 1st August 2006, 03:09 PM   #3
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Old 3rd August 2006, 11:34 PM   #4
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Schematic?
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Old 5th August 2006, 03:51 PM   #5
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Default Thank you. I have solved the problem myself

Quote:
Originally posted by Akira386
Schematic?
At first I used 4 pins CLOCK OSCILLATOR, now I changed it with 2 pins CLOCK OSCILLATOR, and it work very well, the sound is very good too.
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