Design of USB Sound Card Based on pcm2912a

I haven't done any hardware for nearly a year, and I don't feel like I'm using alicloud designer. This usb sound card has two purposes: one is to review the alicloud designer software, and the other is to find something to do in your spare time to pass your empty and lonely experience.

The Audio Codec Chip of this USB sound card is from Texas Instruments (Ti). The price is relatively expensive. a certain piece of memory is about $40. However, I didn't spend the money as a freshly graduated poor silk. I applied for a free sample from Ti. How can I apply for a sample? Baidu, you will know!

The schematic diagram is as follows:

You can download the schematic source file through the following link:

Http://yunpan.cn/cgQ5Aq6xFnvqT extract code faa0

Is a PCB File (top layer & bottom layer ):

Is the PCB 3D preview effect:

Is the actual board:

Is the Board after the components are welded:

Is a photo of the actual work:

There are two LEDs (1 * Blue, 1 * red) on the board. When playing audio, the blue LED is on; when recording, the red LED is on.

Tip:

After the USB port is welded, the USB sound card is inserted into the USB port of the computer. The USB sound card will match the driver on its own, and no additional driver will be installed.

Design of USB Sound Card Based on pcm2912a