I want use an external oscillator with 56F807, to avoid problems
with the internal one at low temperatures.
DSP56f801-7 user's manual recommends to drive the xtal input and
ground extal (when using external oscillator). But it says that also
is possible to drive extal and left unconnected xtal. Which is the
best method ?
Thanks
Reply by Santi Corera●November 3, 20032003-11-03
I must insist. In section 15.3.2.2, figure 15-2 the users manual
recommends
driving xtal and ground extal.
In section 15.5 the manual gives as second option: "External clock source,
uses
EXTAL pin."
I think this is another errata in the manual. But nobody has used an external
oscillator ? Nobody can recommend one method ? If not, I dont understand the
utility of this board.
----- Original Message -----
From: esecece
To:
Sent: Saturday, October 25, 2003 11:59 PM
Subject: [motoroladsp] external oscillator
I want use an external oscillator with 56F807, to avoid problems
with the internal one at low temperatures.
DSP56f801-7 user's manual recommends to drive the xtal input and
ground extal (when using external oscillator). But it says that also
is possible to drive extal and left unconnected xtal. Which is the
best method ?
Thanks
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Reply by Winters John-r54531●November 13, 20032003-11-13
Message
Motorola recommends driving the xtal and grounding the
extal.
----------------------------------- John L. WintersSr. Application Engineer DSP Operation 8/16 Bit Products Division
Transportation & Standard Products Group Motorola Inc. 2100 E. Elliot Road,
Tempe, Arizona 85284
----------------------------------- * For faster turnaround in answering support questions please
access * * Motorola's
Customer Support web site at * *
http://www.motorola.com/semiconductors/support * * * *
Or send email to: D...@motorola.com * -----------------------------------
Motorola Confidential and
Proprietary
-----Original Message----- From: Santi Corera
[mailto:s...@telefonica.net] Sent: Monday, November 03, 2003 10:41
AM To: m...@yahoogroups.com; esecece Subject: Re:
[motoroladsp] external oscillator
I must insist. In
section 15.3.2.2, figure 15-2 the users manual recommends driving xtal and
ground extal. In section 15.5 the manual gives as second option: "External
clock source, uses EXTAL pin." I think this is another errata in the
manual. But nobody has used an external oscillator ? Nobody can recommend one
method ? If not, I dont understand the utility of this board.----- Original
Message ----- From: esecece To: m...@yahoogroups.com
Sent: Saturday, October 25, 2003 11:59 PM Subject:
[motoroladsp] external oscillator I want use an external oscillator with
56F807, to avoid problems with the internal one at low
temperatures. DSP56f801-7 user's manual recommends to drive the
xtal input and ground extal (when using external oscillator). But
it says that also is possible to drive extal and left unconnected
xtal. Which is the best method ?
Thanks
_____________________________________ Note: If you do a simple
"reply" with your email client, only the author of this message will receive
your answer. You need to do a "reply all" if you want your answer to be
distributed to the entire group.
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group: