USB audio controller.

usb audio controller chips

Hi

where can i find information about usb external audio controller? is there any simple schematic and firmware to help me making it?

i'd like to make it by myself.

pcm29xx

audio controller ,, what exactly is that? try to describe the device !!

windows pcm2704 schematic

fuzzzy said:

Hi

where can i find information about usb external audio controller? is there any simple schematic and firmware to help me making it?

i'd like to make it by myself.

Click to expand...

You can check PCM29xx series from TI. They provide many related info and tools, including evaluation board on site.

pcm2704 dac schematic

I mean an external oudio output. an indipendend sound card for my PC to connect to USB port.

it should be an usb d/a converter to converte data from usb into analog audio format.

i hope to be clear

external audio controller

Ok NOW i understand BETTER ,,, ok i did something like this some years ago ,,
I didn't design it ,just used it to make a SIGNAL GENERATOR .
the project was based on a PARALLEL port sound card .. wich was just two DACs ..
look for that on the web. the guy also gave the drivers and everything .
Now this can easily be converterted to USB and also use the same DRIVERS .Just by using the FTDI usb chip in mode PARALLEL port EMULATION
the usb device is seen as another parallel port. And the supplied drivers will work .

Cheers

ti pcm29xx converter

http://www.usbmax.com/Category_USB_Sound.cfm
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http://www.usbgear.net/item_53.html
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Stereo Audio DAC with USB interface, Headphone Output and S/PDIF Output
http://focus.ti.com/docs/prod/folders/print/pcm2704.html
Resolution(Bits) 16
SNR(Typ)(dB) 98
Architecture Stereo USB
Supply Voltage(s)(V) 3.3, 5
Pd(Typ)(mW) 175
Sampling Rate(Max)(kHz) 48
Pin/Package 28SSOP
Approx. 1KU Price (US$) 2.95


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USB Audio Solutions :
AKM Semiconductor Inc.
AK5370 USB I/F A/D Converter, 16-bit, 24VSOP.
Dallas Semiconductors
DS4201 A stereo DAC with USB interface, 28DIP and 44QFP, 3.3V-5V operation (by a customer account works quite well HTD 06.02.99).
Philips Semiconductors
UDA1321H USB audio DAC with on chip ROM.
UDA1325H USB audio codec for playback and recording, on integrated 8051.
UDA1331H audio playback peripheral.(no data sheet yet on site --- HTD 07.07.98)
UDA1335H USB audio codec for playback and recording, on integrated 8051.
ZMM LTD
Offers interface chips for audio and telephone applications.

ds4201 eval board

Elektor magazine did a USB Audio device, with line-level stereo input/output and S/P-DIF input/output. I'll get around to building it one day.

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Nearly forgot to add: it's based on the Texas Instuments PCM2902.

Cheers,
FoxyRick.

pcm2704 schematic

These PCM** devices are very good and simple to use.

do you think windows OS will be able to use standard PCI audio device and this device separately? will it be indipendent?

fuzzzy said:

These PCM** devices are very good and simple to use.

do you think windows OS will be able to use standard PCI audio device and this device separately? will it be indipendent?

Click to expand...

Yes, you get two diffrent audio devices, only you ned selet which is using for actual programm ...

Philips, macronas, TI, Cirrus Logic etc, are all USB audio controller manufacturer.