Handmade MP3 player circuit and information

Related downloads: 1. The latest version of firmware (Aug 14, "00: R0.93) contains the source file firmware .zip 2. Control tools (Jul 2, "00) tools.zip Material list Item Part Number Part value Qty Mfr. Description ---- ----------- -------------- --- ---------- -------- -------------------- 1 U1 AT90S8515 1 Atmel AVR micro-controller 2 U2 PST600J 1 Mitsumi Reset generator 3 U3 MAS3507D 1 Micronas MP3 decoder 4 U4 DAC3550A 1 Micronas Audio D /A converter 5 Q1 2SA1300 1 Toshiba Low saturation, high hfe ---- ----------- -------------- --- ----- ----- ---------------------------- 6 Q2,Q3,Q4 RN1205 3 Toshiba With built-in resisters 7 D1 1GWJ42 1 Toshiba Typical shottky diode 8 D2,D3,D4 1SS319 3 Toshiba Typical swiching diode 9 D5 NSPG320BS 1 Nichia Super high bright 10 Y1 CST6.00MGW 1 Murata Ceramic resonator w/caps ---- --------- --------------- --- ---------- --------------------- ------- 11 Y2 14.725MHz 1 Crystal resonator 12 C1 470uF 1 Alminium 13 C2 330uF 1 Low ESR, OS-CON 14 C3,C4,C7 4.7uF 3 Tantalum 15 C5,C6 220uF 2 Alminium ---- ---------- -------------- --- ---------- ---------- ---------------- 16 C8,C12,C18, 100nF 6