This page`s mission is to help you understand how to use the STA013 MP3 decoder chip in order to design your own MP3 player. The player design described at the rest of these pages uses the STA013, but this page is intended to help you understand the STA013 itself, to use it in your own MP3 player design project. The STA013 datasheet (and other inf
Click here to download the full size of the above Circuit.
o from ST ) is terse and can be difficult to understand, partly because the STA013 is highly configurable. The goal here is to focus on one "normal" usage, only the essential requirements, and one useful configuration, so that this material is as easy to understand as possible. Here are the basic assumptions: Multimedia Mode: in this mode, the STA013 automatically detects the bitrate of your MP3 data, and gives you a signal requesting more data. You feed data into the STA013 as rapidly as possible (well, up to 20 Mbit/sec), as long as it keeps asserting its data request signal. The MP3`s sample rate (32, 44. 1, 48 kHz) is also automatically detected, and the correct clock and data waveforms are created for the DAC. It is possible to ask the STA013 what it has detected while it`s playing, though that`s outside the scope of this simple-as-possible introduction (see the datasheet). There is also a broadcast mode that requires you to feed data at the correct bitrate. Broadcast mode is much more difficult to use and isn`t very useful for most MP3 player designs. All the information here is focused only on multimedia mode. OCLK Output: the STA013 can create all the signals needed to drive a Digital to Analog Converter (DAC). The STA013 can also accept an external DAC clock, but for most applications this is unnecessary and more difficult. All of the examples here assume the OCLK will be created by the STA013, which is a lot...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: