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PJRC Store Main Board, $150 LCD & Pushbuttons, $42 LCD/Backlight/PB, $77 IDE Cable, $9 Complete Parts List MP3 Player Main Page Detailed Info User Photo Gallery Connecting The Board Firmware Download Side Projects Technical Docs Document Index Kit Assembly, Rev C Kit Assembly, Rev A Win32 Compiler Firmware Library Calls Memory Map Data Sheets IR Remote Control Schematic, Rev C Schematic, Rev A Schematic, FPGA PCB Layout, Rev C PCB Layout, Rev A LCD Fonts LCD Protocol LCD Pushbuttons Using The STA013 72 Pin SIMM Old MP3 Player Design Freq. Asked Questions FAQ #2 News And Updates

Schematic Diagrams, MP3 Player Circuit Board (Rev A)

Student Project Alert: Many students request this schematic. Many student projects have a scope of work where using this design is legitimate, like this student project where they tried to write ATAPI drivers. For student projects which mandate original hardware design work (not just construction or modification of an existing design), using this large and complex design would be very unwise, as it is more sophisticated than a typical student project. The older design is realistic for a student project. It wouldn't be hard to convert that design to the STA013/CS4334, using the How To Use The STA013 page (that also includes working code).

Figure 1: Processor Section

The schematics on this page describe all of the wiring on the circuit board. Inside inside of the FPGA is described on a separate FPGA schematic page. The circuitry implemented inside the FPGA is configured by the firmware when the board boots, so that circuitry may be changed with the firmware upgrades.

The SDA and SCL lines are mis-labeled in figure 1. P1.0 is the SCL signal, and P1.1 is SDA.

Figure 2: Interface Section

Figure 3: MP3 Decoder and Audio Section

Figure 4: Power Supply Section