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PICList Thread
'[OT] MPEG help -Reply'
1998\02\15@200819 by ang (Chee Foon Tiang)

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I've done a engineering demo set using one uC to control CD servo &
DSP
and the CL484 (MPEG decoder) for VideoCD ver 2.0 implementation.

But the uC that I used (H8/3726) has 48K of EPROM and able to
drive VFD directly which probably the PIC can't handle.

However, most implementation in the market uses a 2 uC solution with
a dedicated 8051 to control the MPEG decoder + VFD driver IC + IR +
etc.
All these while communicating with the CD mechanism through a software
protocol based on Philips DSA (Data, Strobe, Ack) or some
other proprietary protocol.
The other uC is dedicated to controlling  the CD mechanism (servo +
DSP).

The CL484 uses a parallel interface and CL680 does it serially.
I won't bother with the CL484 if I were you, as it will be obsolete
soon.
We are in the middle of migration to the CL680 as well.

If you need any help, please e-mail me.

Peter Tiang
Design Engineer
Design & Applications Lab
Hitachi Semiconductor(M) Sdn Bhd
Bayan Lepas FIZ
11900 Bayan Lepas
Penang
Malaysia.

e-mail: spam_OUTtiangcfoonTakeThisOuTspamhitachi.com.my
tel: +604-643-8121 ext 2624
fax: +604-643-4190

==========================================================
>>> David Duffy <.....AVDKILLspamspam@spam@UQ.NET.AU> 14/February/1998 02:18pm >>>
Are there any CD player/MPEG gurus out there ?
I need some help in understanding how/why the decoder/dsp talks to
syscon.
We are using the C-Cube CL484 & CL680 devices to decode MPEG
audio/video.
Sorry for the OT nature but our pcb uses a PIC on as well !
Thanks in advance...
_______________________________________________________________
Dave Duffy         Audio Visual Devices           AVDspamKILLspamuq.net.au
Unit 8, 9-11 Trade Street, Cleveland, Queensland 4163 Australia
Phone: +61 7 38210362                 Facsimile: +61 7 38210281
_______________________________________________________________

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