Micronas MAS3507D MP3 decoder IC on ISA?

K

Kris Jones

Guest
I was looking at the spec sheet for the Micronas MAS3507D MP3 decoder,
http://www.micronas.com/products/documentation/consumer/mas3507d/index.php
and I noticed that you can also use 8-bit parallel input.

I was thinking about making a hardware MP3 player for PC/104
interface, which is actually ISA.

Could you just attach the MP3 decoder to an ISA bus and stream MPEG
data to it in parallel?

Am I crazy or would that work?

It seems to me the biggest problem would be getting the timing to
match up.
 
"Kris Jones" <shiny_razor@hotmail.com> wrote in message
news:b4098365.0311101507.e8ffe54@posting.google.com...
I was looking at the spec sheet for the Micronas MAS3507D MP3 decoder,
http://www.micronas.com/products/documentation/consumer/mas3507d/index.php
and I noticed that you can also use 8-bit parallel input.

I was thinking about making a hardware MP3 player for PC/104
interface, which is actually ISA.

Could you just attach the MP3 decoder to an ISA bus and stream MPEG
data to it in parallel?

Am I crazy or would that work?

It seems to me the biggest problem would be getting the timing to
match up.
Click to expand...


I don't know anything about this IC, but based on what you've said above I
think it should work. You'll need to address-decode the ISA bus (i.e.,
allocate an ISA address to the MP3 IC) and just stream the music data to
that address one byte at a time. You could also use a buffer RAM to ensure a
stable timing.

rgds,
Costas
 
On 10 Nov 2003 15:07:13 -0800, shiny_razor@hotmail.com (Kris Jones)
wrote:

I was looking at the spec sheet for the Micronas MAS3507D MP3 decoder,
http://www.micronas.com/products/documentation/consumer/mas3507d/index.php
and I noticed that you can also use 8-bit parallel input.

I was thinking about making a hardware MP3 player for PC/104
interface, which is actually ISA.

Could you just attach the MP3 decoder to an ISA bus and stream MPEG
data to it in parallel?

Am I crazy or would that work?

It seems to me the biggest problem would be getting the timing to
match up.
Click to expand...
Why not just use the printer port that your PC/104 computer is almost
certainly already equipped with?
 
Daniel Simon <dansimon@REMOVExmission.com> wrote in message news:<aat0rv0v52hl3m49m4bc4imqrc4ptje210@4ax.com>...
On 10 Nov 2003 15:07:13 -0800, shiny_razor@hotmail.com (Kris Jones)
wrote:

I was looking at the spec sheet for the Micronas MAS3507D MP3 decoder,
http://www.micronas.com/products/documentation/consumer/mas3507d/index.php
and I noticed that you can also use 8-bit parallel input.

I was thinking about making a hardware MP3 player for PC/104
interface, which is actually ISA.

Could you just attach the MP3 decoder to an ISA bus and stream MPEG
data to it in parallel?

Am I crazy or would that work?

It seems to me the biggest problem would be getting the timing to
match up.

Why not just use the printer port that your PC/104 computer is almost
certainly already equipped with?
Click to expand...
I thought about that kind of solution, and I just think it would be
messier. First off it would make it a dongle, which I am not too fond
of. Then there is the difference in speed. Then it would need an
external power supply.

I am also very fond of the PC/104 form factor. I have many
single-board computers that have these slots. Sound cards in PC/104
are hard to come by, and all I would want them to do is play MP3, so
why not throw in a hardware decoder? Then you could play them on
anything, even a 386! (And no, slow cpus aren't rare in embedded
form-factors, Advantech still sells 386SX PC/104 cpu boards.)

Also, if I were to start with an LPT solution first, the design would
be very different. If I ever decided to move to ISA I would have to
just scrap all the designs for LPT anyway.
 
Anybody know anything about developing for ISA and want to give me a
hand?

I'll probably need someone to write drivers for it also.

If it turns out to be do-able, maybe it could become a commercial
product... and of course you would get a percentage!
 
shiny_razor@hotmail.com (Kris Jones) wrote in message news:<b4098365.0311121830.1848a48e@posting.google.com>...
Anybody know anything about developing for ISA and want to give me a
hand?

I'll probably need someone to write drivers for it also.

If it turns out to be do-able, maybe it could become a commercial
product... and of course you would get a percentage!
Click to expand...
If you provide the chip (PLC44), we can make the board for you.
The board will probably be less than $5 (qty 100) without the chip.
I emailed you with my real email ID.
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top