Only 128kbps, I am getting 192kbps with a 68HC11 design, and the HC11 is very =
slow compared to a 20Mhz PIC?
Sounds odd this low. This is a 68HC11 bit banging the interface, so its a true =
single chip design!

68hc11 @ 8Mhz =3D 1MIPS
PIC @ 20Mhz =3D 20MIPS right?

My 68HC11 does both FAT32 and FAT16 on CF or HD at 192Kbps max.

I have a AT90S4414 design doing the same at full 320kbps and thats all done in =
less than 256 bytes ram!

Richard.


 >>  Hi Brusque,

 >>  Just too let you know, You can build your own player with a PIC! Not
 >>  simple,
 >>  but can be done.

 >>  I'm nearing the end of a development process for a client where I've made
 >>  an
 >>  MP3 player using a PIC16F877 (20MHz) a Compact Flash card for storage
 >>  (reading FAT16) streaming the MP3 data to a STA013 mpeg decoder IC. I've
 >>  written all the code in C, no optimisation and it happily plays 128Kbps
 >>  MP3s
 >>  which are more then good enough for a car sound system and much better
 >>  then
 >>  my clients needs.

 >>  A 64MB CF card will hold about a CD's worth at the 128Kbps data rate and
 >>  you
 >>  can get bigger ones and IBM micro-drives that pretend to be CF cards in
 >>  the
 >>  1GB range..

 >>  Unfortunately, I'm not able to give much detail because it is a commercial
 >>  project for a client, but I thought some on the list may be interested to
 >>  know it can be done.. :) Others have probably already done it.. :)

 >>  If you have any specific questions about it I'll try to answer them..

 >>  Actually If anyone is interested I might be able to adapt this system (if
 >>  my
 >>  client agrees) to a kit so you can build your own car MP3 player.. It is
 >>  all
 >>  surface mount though :) Any takers?

 >>  Cheers,
 >>  Ash

 >>  ---
 >>  Ashley Roll
 >>  Digital Nemesis Pty Ltd
 >>  www.digitalnemesis.com
 >>  Mobile: +61 (0)417 705 718




 >>  > -----Original Message-----
 >>  > From: pic microcontroller discussion list
 >>  > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Edson Brusque
 >>  > Sent: Friday, 8 February 2002 9:38 AM
 >>  > To: PICLIST@MITVMA.MIT.EDU
 >>  > Subject: [EE]: Car MP3 player. (oh no, again!!!)
 >>  >
 >>  >
 >>  > Hello people,
 >>  >
 >>  >     I'm looking for a new CD-player for my car but I'm
 >>  > seriously thinking
 >>  > about spending some time doing my own Car-MP3-player.
 >>  >
 >>  >     My idea is to use one of that little single board
 >>  > computers (SBC) with
 >>  > one AWE64 sound card, one HD and displaying the informations
 >>  > on an 4x40
 >>  > 44780 LCD. The keys would simply be switches attached to the
 >>  > printer port
 >>  > with the LCD.
 >>  >
 >>  >     Well, I'm looking for some DOS based MP3 players and
 >>  > there is many that
 >>  > could do the job. Probably there's someone that made a player
 >>  > with support
 >>  > for LCD and switches on parallel port.
 >>  >
 >>  >     The biggest problem seens to found a SBC (486DX4-100
 >>  > would do) that I
 >>  > could buy cheaply and only one unit. Someone here knows where
 >>  > can I buy a
 >>  > 486 SBC on an ISA card format?
 >>  >
 >>  >     Thank you very much,
 >>  >
 >>  >     Brusque
 >>  >
 >>  > -----------------------------------
 >>  > Edson Brusque
 >>  > Research and Development
 >>  > C.I.Tronics Lighting Designers Ltda
 >>  > Blumenau  -  SC  -  Brazil
 >>  > www.citronics.com.br
 >>  > Say NO to HTML mail
 >>  > -----------------------------------
 >>  >
 >>  > --
 >>  > http://www.piclist.com hint: The list server can filter out subtopics
 >>  > (like ads or off topics) for you. See http://www.piclist.com/#topics
 >>  >
 >>  >
 >>  >

 >>  --
 >>  http://www.piclist.com hint: The list server can filter out subtopics
 >>  (like ads or off topics) for you. See http://www.piclist.com/#topics








__________________________________________________________
The Mind Factory INC
www.themindfactory.com          =20
Richard Sloan                      =20
(613) 825-4758 phone               =20
(613) 825-7758 fax
rsloan@themindfactory.com

* Custom MP3 Development=20
* Low Power FM Transmitters
* Custom Smart Cards
* Music / Speech Playback Systems
* Electronic Manufacturing
* Hardware / Firmware / Software Design
* Schematic and PCB layout
* 8051, 68HC11, PIC, AVR
* MP3, FAT16/32, IR, IRDA, USB, X10, VIDEO, TCP/IP, LCD, COMPACT FLASH

* ALL PRICES QUOTED IN US$ UNLESS OTHERWISE NOTED

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