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Atmel AT89C51SND1 manual

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Table of contents for the manual

  • Page 1

    MP3 Pl ayer Referen ce Des ign Based on AT 89C51S ND1 Micro controll er ........... .............. .............. .............. .............. .............. ............. User G uide[...]

  • Page 2

    AT89C51SND1 Reference Design User Guide 1 4207B–M P3–04/07 Tab le of Con tents Section 1 Introduction.............. .............. .............. .............. .............. .............. ........... 1 1.1 Web Site d ownload... ................... .......................... ................... ................... 1 1.2 Abbrevi ations .......[...]

  • Page 3

    AT89C51SND1 Reference Design User Guide 1-1 Rev. 4207B–M P3–04/07 Section 1 Introduc tion T he A T8 9 R FD - 0 1 i s a n M P3 re ad e r r e f er e n c e d e si g n b a s e d o n t h e A T 8 9C 5 1 S N D 1 microcontr oller. The AT8 9RFD-01 has the following fe atures: • Upload and Download of Files Through a USB Interface • Plays or Records [...]

  • Page 4

    Introduction AT89C51SND1 Reference Design User Guide 1-2 4207B–M P3–04/07 1.2 Abbreviations  A T89C51SND1 : the MP3 m icrocontrolle r  ISP: In-Syst em Program ming  MP3: MPE G layer 3, a standard music format  PC: Person al Compute r  USB: Univer sal Serial Bu s[...]

  • Page 5

    AT89C51SND1 Reference Design User Guide 2-3 Rev. 4207B–M P3–04/07 Section 2 Overv iew Figure 2- 1. Reference Design (Top view) There are two connector s:  Earphone s tereo jack  Mini-B US B connector[...]

  • Page 6

    Overview AT89C51SND1 Reference Design User Guide 2-4 4207B–M P3–04/07 Figure 2- 2. Reference Design (bottom view) The battery i s a standard 1 .5V-battery ty pe AAA. The mass storage system o n the boar d is a 64 MB N AND Flash me mory. 2.1 User Interface The user interface has 4 LE Ds and 5 p ush-buttons:  Play/Pause  Function  Previo[...]

  • Page 7

    Overview AT89C51SND1 Reference Design User Guide 2-5 4207B–M P3–04/07 Figure 2- 3. User Interfac e Overview Each LED ma y be:  OFF  Flashing (ON during les s than 1 second and only one time)  Slow blink ing (continuo usly)  Fast blinki ng (continuousl y)  ON microphone headphon e connector Play/Pause ON (Pwr ) LED n° 1 LED n° 2[...]

  • Page 8

    Overview AT89C51SND1 Reference Design User Guide 2-6 4207B–M P3–04/07 2.2 Quickstart This p rocedure allows y ou to quickly play an MP3 song stored in the ma ss storag e sys- tem. If the m ass sto rage is emp ty or no t form atted , see th e foll owin g secti on reg ardin g MP3 uplo ad (“USB Mode ”). 4. If the pl ayer is batte ry powered, p[...]

  • Page 9

    Overview AT89C51SND1 Reference Design User Guide 2-7 4207B–M P3–04/07 2.5 Alternate Functions When a mod e is validated, the correspon ding L ED bl inks slo wly (e xcept fo r USB mode, LED n° 3 bli nk quic kly wh en mod e is ac tiv at ed a nd m or e sl ow ly d uri ng t ra nsf er) . Al ter - nate fun ction s r egardi ng this mode are then acc e[...]

  • Page 10

    AT89C51SND1 Reference Design User Guide 3-8 Rev. 4207B–M P3–04/07 Section 3 Overview of Mode s 3.1 Song Mode This mod e will al low users to listen to the M P3 song stored in the emb edded mass stor- age sy st em. If th e m em ory is em pty , L ED n° 1 doe s n ot bl ink and t her e i s n o m us ic. If there a re valid MP3 file s in the m emor [...]

  • Page 11

    Overview of Modes AT89C51SND1 Reference Design User Guide 3-9 4207B–M P3–04/07 In order to leave this sta te, the Play/Pau se button must be press ed. Do not d isconnect the cable befo re leaving US B Mode. 3.4 Erase Mode Whe n this mo de is val ida ted by pre ssi ng Pla y/ Paus e but ton , al l L EDs ar e O FF dur ing the erasi ng and re forma[...]

  • Page 12

    AT89C51SND1 Reference Design User Guide 4-10 Rev. 4207B–M P3–04/07 Section 4 In-System Program ming (IS P) 4.1 Using Hardware Conditions Tw o so l de r po in t s or s ho rt - cu ts h av e to be p hy si c al ly s et u p on t h e bo ar d i n o r de r to enter this m ode. This mo de must be used whe n t he initial soft ware has b een corrupte d an[...]

  • Page 13

    Disclaimer: Th e i n f or m at i on in th is do cu m en t is pro v i de d i n c o n n ec t io n w i th At m el pro d uc t s. No l i ce n s e, ex pr e ss or im pl i ed , by es t op p el or o t he r w is e , to an y in t e ll ec t u al p ro p er t y ri g ht i s gr a nt e d by t h is d oc u me n t o r i n c o n ne c ti o n w i t h t h e s a l e o f At[...]