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hy 

There are couple of problems i am facing :

1. how to input digital data by bypassing the codec .

2. how to achieve frequency stability at the output i am facing 
frequency jitter.

kindly help me in this regard

jahanzeb pirzada
------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables developers to start building
applications based on the OMAP35x architecture:http://www.DSPRelated.com/omap35x

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Hi, 
 
Can you explain a bit more what you want to achieve...and on what platform.
There are various ways to input digital data, serial links (McBSP, McASP...) or parallel ones
(HPI, DPRAM,...)
Clock all have a stability, but usually you can find something between 10-100ppm, is that not
enough for what you want to achieve? what is your requirement?

(You need to be a member of c6x -- send a blank email to c6x-subscribe@yahoogroups.com )

--- In c...@yahoogroups.com, christophe blouet <christophe_blouet@...> 
wrote:
>hy 

thanks for the reply.
actually i have designed a bpsk modulator with a  data rate of 4kbps 
and operating at 16 khz frequency. now i have to check wheather its 
working good or not. thats why i have to give a digital input 1 0 1 1 
like pattern that i can generate at pattern generator on logic analyzer 
but i dont know how to input digital input to dsp. 

secondly i need to know that how can i acheive frequency stability 
because it will not jitter when i watch it on osciloscope.

one more issue how can i select my program to be at the boot of dsp so 
that when i on the kit my programme execute directly.

i know these are difficult issues kindly help as much as you can i will 
be greatful.

thanks

jahanzeb pirzada
> 
> Hi, 
>  
> Can you explain a bit more what you want to achieve...and on what 
platform.
> There are various ways to input digital data, serial links (McBSP, 
McASP...) or parallel ones (HPI, DPRAM,...)
> Clock all have a stability, but usually you can find something 
between 10-100ppm, is that not enough for what you want to achieve? 
what is your requirement?
>

------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables developers to start building
applications based on the OMAP35x architecture:http://www.DSPRelated.com/omap35x

(You need to be a member of c6x -- send a blank email to c6x-subscribe@yahoogroups.com )

Hi, 
 
Still don't know what is your platform ?
For input pattern, We need to know on which platform and what kind of pattern generator you are
using and the kind of link you can set. if serial, most probably McBSP will fit.
For Frequency stability of 100ppm is good enough, and your platform may achieve that.
For Boot, most probably your kit offers Flash booting, so you will have to flash your
application into it (use flashburn)
Those are not difficult issues, but you look new to this
 
Regards

(You need to be a member of c6x -- send a blank email to c6x-subscribe@yahoogroups.com )

jahanzeb pirzada,

On Fri, Jun 27, 2008 at 4:35 AM, jahanzeb pirzada
<j...@yahoo.com> wrote:
> --- In c...@yahoogroups.com, christophe blouet <christophe_blouet@...>
> wrote:
>>hy
>
> thanks for the reply.
> actually i have designed a bpsk modulator with a data rate of 4kbps
> and operating at 16 khz frequency. now i have to check wheather its
> working good or not. thats why i have to give a digital input 1 0 1 1
> like pattern that i can generate at pattern generator on logic analyzer
> but i dont know how to input digital input to dsp.

For debug, why not create a 'hard coded array' of fixed values to
troubleshoot with.
>
> secondly i need to know that how can i acheive frequency stability
> because it will not jitter when i watch it on osciloscope.

I don't know for sure wrt psk, but I would expect one of the following to work:
1. generate a fixed pattern of 2 values. If you have an array of 20
entries, make 19 of them pattern A and 1 pattern B.  I would expect
pattern A to show up 'darker' [even on a digital scope] due to update
frequencies and minor deviations.
OR
2. toggle a GPIO pin at the start of each loop to provide a common
reference point in time.

>
> one more issue how can i select my program to be at the boot of dsp so
> that when i on the kit my programme execute directly.

Check the archives, there is quite a bit of info [and opinions] - like
christophe said, flashburn is probably the best way to go.

mikedunn
>
> i know these are difficult issues kindly help as much as you can i will
> be greatful.
>
> thanks
>
> jahanzeb pirzada
>
>>
>> Hi,
>>
>> Can you explain a bit more what you want to achieve...and on what
> platform.
>> There are various ways to input digital data, serial links (McBSP,
> McASP...) or parallel ones (HPI, DPRAM,...)
>> Clock all have a stability, but usually you can find something
> between 10-100ppm, is that not enough for what you want to achieve?
> what is your requirement?
>> 

-- 
www.dsprelated.com/blogs-1/nf/Mike_Dunn.php

------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables developers to start building
applications based on the OMAP35x architecture:http://www.DSPRelated.com/omap35x

(You need to be a member of c6x -- send a blank email to c6x-subscribe@yahoogroups.com )

i am working on c6713 dsk and i can generate any bit pattern from 
agilent logic analyzers pattern generator. i dont know how i can 
connect the with the dsk board pattern generator have probes which 
connect through parallel port. for frequency issue i am having 
problem that at output i am having bpsk wave fluctuating its not 
stable. kindly suggest what should be my course of action. thanks for 
the flashburn advice i am workking on it.'

regards 

jahanzeb pirzada
--- In c...@yahoogroups.com, christophe blouet <christophe_blouet@...> 
wrote:
> Hi, 
>  
> Still don't know what is your platform ?
> For input pattern, We need to know on which platform and what kind 
of pattern generator you are using and the kind of link you can set. 
if serial, most probably McBSP will fit.
> For Frequency stability of 100ppm is good enough, and your platform 
may achieve that.
> For Boot, most probably your kit offers Flash booting, so you will 
have to flash your application into it (use flashburn)
> Those are not difficult issues, but you look new to this
>  
> Regards
>

------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables developers to start building
applications based on the OMAP35x architecture:http://www.DSPRelated.com/omap35x

(You need to be a member of c6x -- send a blank email to c6x-subscribe@yahoogroups.com )

jahanzeb,

On Mon, Jun 30, 2008 at 12:47 AM, jahanzeb pirzada
<j...@yahoo.com> wrote:
>
> i am working on c6713 dsk and i can generate any bit pattern from
> agilent logic analyzers pattern generator. i dont know how i can
> connect the with the dsk board pattern generator have probes which
> connect through parallel port.
??parallel port??6713 DSK??
You can connect the pattern gen to the data lines on the daughtercard
connector [see DSK schematics and daughtercard docs]  and read them
using CE2 or CE3 [0xA0000000 or 0xB0000000]. Make sure that the
pattern gen output is set for 3-3.3v.

mikedunn

> for frequency issue i am having
> problem that at output i am having bpsk wave fluctuating its not
> stable. kindly suggest what should be my course of action. thanks for
> the flashburn advice i am workking on it.'
>
> regards
>
> jahanzeb pirzada
>
> --- In c...@yahoogroups.com, christophe blouet <christophe_blouet@...>
> wrote:
>> Hi,
>>
>> Still don't know what is your platform ?
>> For input pattern, We need to know on which platform and what kind
> of pattern generator you are using and the kind of link you can set.
> if serial, most probably McBSP will fit.
>> For Frequency stability of 100ppm is good enough, and your platform
> may achieve that.
>> For Boot, most probably your kit offers Flash booting, so you will
> have to flash your application into it (use flashburn)
>> Those are not difficult issues, but you look new to this
>>
>> Regards
>> 

-- 
www.dsprelated.com/blogs-1/nf/Mike_Dunn.php

------------------------------------

OMAP35x EVM jump-starts low-power apps
------------------------------------
The modular and extensible OMAP35x Evaluation Module (EVM) enables developers to start building
applications based on the OMAP35x architecture:http://www.DSPRelated.com/omap35x

(You need to be a member of c6x -- send a blank email to c6x-subscribe@yahoogroups.com )