From: Dan Brennan <dmb8@optonline.net>
To: "Ing.Gianfranco Morandi" <gianfranco.morandi@euro-studio.it>
Cc: LinuxPPC <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: 8260 MCC Interrupt priority
Date: Mon, 09 Sep 2002 20:00:33 -0400 [thread overview]
Message-ID: <3D7D3621.5C62AC56@optonline.net> (raw)
In-Reply-To: 020c01c25820$89c23880$0700a8c0@pc005
Which silicon version are you using, e.g., B.3? Read the errata for the
part. Activity on FCC1 can wreak havoc on a very busy MCC.
"Ing.Gianfranco Morandi" wrote:
>
> Hi to everybody,
>
> I'm currently working on a custom board derived from EST8260. We are trying
> to implement a device driver of MCC to control the interface with a
> synchrounous PCM.
> I have noted that when there is an interrupt on SCC1 (or FCCx) the latency
> time of MCC interrupt increase. Now I'm really concerned about the
> possibility to loose some frame due to an heavy use of such interfaces.
>
> Do anybody knows if there is the possibility to avoid such behaviour (maybe
> allowing an interrupt casting with the MCC ISR)?
>
> Many thanks
>
> Gianfranco Morandi
>
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2002-09-10 0:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-09 16:47 8260 MCC Interrupt priority Ing.Gianfranco Morandi
2002-09-09 19:36 ` Wolfgang Denk
2002-09-10 17:00 ` Ing.Gianfranco Morandi
2002-09-10 18:12 ` Wolfgang Denk
2002-09-10 0:00 ` Dan Brennan [this message]
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