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Re: help me about c6711b hpi

Started by Jeff Brower September 20, 2003
Zhhyh2000

> hi,I have meeting very seriouse problem .I use 80386ex as host
> interface to c6711b with hpi,now I transefer about 15M BYTES from dsp
> to 80386ex,by accident ,find dsp hready signal is deactive for long
> time,then 80386ex reset because of watchdog.is there any bug in it?
> I use hardware handshake signal.
> Time is ok .
>
> please help me!

I have posted your question on C6x Yahoo Group.

Jeff Brower
system engineer
Signalogic




Ready can "go away" for periods of time.  This is normally caused by either the internal state machine or other bus activity by the 6711.  I would expect this period to be a few microseconds unless the DSP is executing high priority EDMA transfers.
How long is "a long time"??
Also, have you read the HPI errata for time 6711B ??
 
mikedunn

Jeff Brower <j...@signalogic.com> wrote:
Zhhyh2000

> hi,I have meeting very seriouse problem .I use 80386ex as host
> interface to c6711b with hpi,now I transefer about 15M BYTES from dsp
> to 80386ex,by accident ,find dsp hready signal is deactive for long
> time,then 80386ex reset because of watchdog.is there any bug in it?
> I use hardware handshake signal.
> Time is ok .
>
> please help me!

I have posted your question on C6x Yahoo Group.

Jeff Brower
system engineer
Signalogic

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