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[Fwd: RE: INSERT instruction w/ DSP563xx]

Started by Henk-Piet Glas May 9, 2005
Forward...

p.s. I propose Freescale insert motoroladsp@moto... into the
reply address of any posting. It sometimes happens a reply intended for
the forum is accidentally sent to me personally. I'm sure I'm not the
only one.

-------- Original Message --------
Subject: RE: [motoroladsp] INSERT instruction w/ DSP563xx
Date: Mon, 9 May 2005 08:55:07 -0400
From: Carcia, Francis A HS <francis.carcia@fran...>
To: 'Henk-Piet Glas' <henk-piet.glas@henk...>

Hi,
I have not followed your post but I had to insert "nop"s in my code in my
56303 used as a
I/Q demodulator. The code would not hold 90 degree phase shift. I was later
told to add
wait states which also worked. The operation was rock solid after that. I
never found the real problem but I bet it is similar to yours. I tried
different clock speeds with no change. fc

-----Original Message-----
From: Henk-Piet Glas [mailto:henk-piet.glas@henk...]
Sent: Friday, May 06, 2005 9:02 AM
To: motoroladsp@moto...
Subject: Re: [motoroladsp] INSERT instruction w/ DSP563xx Dear Gustave,

Have you checked the errata for the derivative that you are
using? Such as it is there should be no need for a NOP
because, as you say, the processor will insert an
arithmetic stall. If you are forced to insert an additional
one I'd be tempted to say there is an errata.

Regards,
--
Henk-Piet Glas Support Engineer
-----------------------
E-mail: support.nl@supp... Altium Software BV
Voice: +31-33-455 85 84 Saturnus 2
Fax: +31-33-455 55 03 3824 ME Amersfoort
WWW: http://www.altium.com The Netherlands
-------[ Altium -- Making Electronics Design Easier ]------
--
Henk-Piet Glas Support Engineer
-----------------------
E-mail: support.nl@supp... Altium Software BV
Voice: +31-33-455 85 84 Saturnus 2
Fax: +31-33-455 55 03 3824 ME Amersfoort
WWW: http://www.altium.com The Netherlands
-------[ Altium -- Making Electronics Design Easier ]------