![]() ![]() If your player uses a 3 volt microcontrollerĪnd 3 volt logic, then there is nothing to worry about and you Sure that they are properly received and to prevent damage to Microcontrollers and DACs (CS4334) requires attention to make The data sheet claims is can runīetween 2.7 to 3.6 volts (and separately mentions 2.4 volts ![]() Power Supply Issues, 5 Volt to 3 Volt Interface Page with instructions to make your own adaptors. To ask for permission to display their soldered wires photo. TODO: contact Peter and Daniel (anyone know their email address?) While an adaptor circuit board is easier, it is also possible This is actually a 32 pin adaptor, so 4 pins are unused with In a prototype, which DIP pins are easier to use. The two basicĪpproaches are to buy or make an adaptor board, or to solderįigure 2: STA013 Chip and Aries SOP to DIP Adaptor BoardĪries makes adaptors that are ideal for connecting the STA013 Is not made in any through-hole packages. ![]() Player is that it is a surface mount part. The first problem with using the STA013 for a prototype MP3 If the STA013 datasheet is a bit confusing. This page still may be a good place to start, particularly MoreĪdvanced applications (real-time low-latency radio reception,Īudio data fed into another processor, etc) The hope is that this limited focus will allow this page toĮxplain how to use the STA013 much more clearly, for theĬommon application in a media-based MP3 player. A long andĭetailed list appears in the datasheet, but most MP3 playerĭesigns will only need to use the ones mentioned here, at Keeping this page simple and easy to understand. Most important ones are covered here, in the interest of Options and parameters available in the STA013, but only the Essential Commands/Queries Only: there are many.The CS4334 makes it simpleĪnd easy to obtain excellent quality line-level audio output without Time analog output filter that eliminates the need for external The examplesĪlso use the CS4334, which provides excellent quality line-levelĪudio output, and also includes 4X interpolation and a continuous Happens to be an exact multiple of standard baud rates). CS4334 DAC, 14.7456 MHz Crystal: it is possible toĬonfigure the STA013 to work with many different DAC chips andĬrystals, but the examples here will focus only on a 14.7456 MHzĬrystal, which is inexpensive and a standard value (that also.Which is a lot simpler than adding external circuitry. The examples here assume the OCLK will be created by the STA013, STA013 can also accept an external DAC clock, but for mostĪpplications this is unnecessary and more difficult. Needed to drive a Digital to Analog Converter (DAC). OCLK Output: the STA013 can create all the signals.All the information here is focused only on multimedia mode. Broadcast mode is much moreĭifficult to use and isn't very useful for most MP3 playerĭesigns. There is also a broadcast mode that requires you to feed dataĪt the correct bitrate. Of this simple-as-possible introduction (see the datasheet). It is possible to ask the STA013 what it hasĭetected while it's playing, though that's outside the scope The MP3's sample rate (32, 44.1, 48 kHz) is also automaticallyĭetected, and the correct clock and data waveforms are created (well, up to 20 Mbit/sec), as long as it keeps asserting its data You feed data into the STA013 as rapidly as possible Multimedia Mode: in this mode, the STA013 automaticallyĭetects the bitrate of your MP3 data, and gives you a signal requesting.One useful configuration, so that this material is as easy "normal" usage, only the essential requirements, and Using the STA013 for a "Normal" MP3 Playerĭifficult to understand, partly because the STA013 is Purchase CS4334 Digital to Analog Converter, $5.You can purchase the STA013 and CS4334 directly from PJRC: To help you understand the STA013 itself, to use it in Of these pages uses the STA013, but this page is intended The STA013 MP3 decoder chip in order to design your own This page's mission is to help you understand how to use Downloadable Free Code And Supporting Files STA013 Chip Details.Actually Using These Functions To Configure The STA013.Writing To The STA013, "sta013_write" Function.Reading From The STA013, "sta013_read" Function.Communication And Configuration Via I☬.Power Supply Issues (5 volts to 3 volts).Using the STA013 for a "Normal" MP3 Player.
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