Hi!

Iam new to the  DSP processors.....

I have a small doubt...
Actually  in the datasheets they are giving that BF533 can work upto 
600MHz(maximum performance)...and SCLK 133Mhz....

When iam working with the BF533ez-kit lite, how would i know that it is 
running at Coreclk and SCLK...

PLease help........????????

Hi,

The CCLK and SCLK are derived from CLK_IN of the processor. Programmable PLL
unit of BF processor allows you to configure different values of cCLK and
SCLK.

The CCLK and SCLK values depends on DF/PLL_CTL, MSEL/PLL_CTL,
BYPASS/PLL_DIV, SSEL/PLL_DIV and CSEL/PLL_DIV fields . Figure 8-1 in the
"BF-533 HRM" depicts it very clearly.

To know the value of CCLK and SCLK you need to know three things
 (1) Formula to compute SCLK and CCLK from CLK_IN
    Read the chapter-8 of "BF-533 HRM" to get this relation.
 (2) Value of CLK_IN - you can measure it on the board, or know it from the
specification of parts (crystal) being used.
 (3) Values of different fields in that formula
    The value of different fields can be obtained by reading the PLL_CTL and
PLL_DIV Registers.

As you are a beginner, it will be very useful for you, if you refer to the
"BF-533 HRM" in detail. It will help you to get a fair idea abour processor
and ramp up quickly.

Regards,
Kunal
www.singhkunal.com

On 7/24/07, malli_1729 <m...@yahoo.co.in> wrote:
>
>   Hi!
>
> Iam new to the DSP processors.....
>
> I have a small doubt...
> Actually in the datasheets they are giving that BF533 can work upto
> 600MHz(maximum performance)...and SCLK 133Mhz....
>
> When iam working with the BF533ez-kit lite, how would i know that it is
> running at Coreclk and SCLK...
>
> PLease help........????????
>
>  
>

-- 
www.singhkunal.com
---
For a system, LIFO and FILO mean the same. For individuals in the system,
they mean opposite.

Hi,

Load the executable and check the PLL Control registers!

Best Regards, 
Harish 

  _____  

From: malli_1729 [mailto:m...@yahoo.co.in] 
Sent: Wednesday, July 25, 2007 10:07 AM
To: a...@yahoogroups.com
Subject: [adsp] New comer Question in ADSP-BF533

Hi!

Iam new to the DSP processors.....

I have a small doubt...
Actually in the datasheets they are giving that BF533 can work upto 
600MHz(maximum performance)...and SCLK 133Mhz....

When iam working with the BF533ez-kit lite, how would i know that it is 
running at Coreclk and SCLK...

PLease help........????????

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Hi,

The Clock In frequency to the BF533 on the EZKIT is 27 MHz.  This is stepped
up by an onboard PLL and then divided down to get the CCLK and SCLK
frequencies (Core and system clocks, respectively).  (The maximum CCLK you
can get with a 27 MHz CLKIN is 594 MHz.) You can open up the PLL Register
File window in VDSP and look at the register values for PLL_CTL and PLL_DIV.
You will need to look at the hardware ref manual to see fields in the
registers (such as multiplier ration, divider ratio, etc).  Chapter 8 of the
HW reference has a very good discussion on how clocking works on the
Blackfin.

Cheers,

George Kadziolka

www.kaztek.com <http://www.kaztek.com/>

  _____  

From: a...@yahoogroups.com [mailto:a...@yahoogroups.com] On Behalf Of
malli_1729
Sent: Wednesday, July 25, 2007 12:37 AM
To: a...@yahoogroups.com
Subject: [adsp] New comer Question in ADSP-BF533

Hi!

Iam new to the DSP processors.....

I have a small doubt...
Actually in the datasheets they are giving that BF533 can work upto 
600MHz(maximum performance)...and SCLK 133Mhz....

When iam working with the BF533ez-kit lite, how would i know that it is 
running at Coreclk and SCLK...

PLease help........????????

malli_1729 wrote:
> Hi!
> 
> Iam new to the  DSP processors.....
> 
> I have a small doubt...
> Actually  in the datasheets they are giving that BF533 can work upto 
> 600MHz(maximum performance)...and SCLK 133Mhz....
> 
> When iam working with the BF533ez-kit lite, how would i know that it is 
> running at Coreclk and SCLK...
> 
> PLease help........????????

You should get a copy of the BF533 Hardware ref. manual if you
don't already have one..

http://www.analog.com/processors/blackfin/technicalLibrary/manuals/index.html

Look at the values in registers PLL_CTL and PLL_DIV.

Regards
--
Adrian Hey

In the Device Drivers and System Services Manual for Blackfin Processors please take a
look at the adi_pwr_GetFreq() API. You can use it to obtain the core and system clock
frequencies. However before calling adi_pwr_GetFreq() you will have to call adi_pwr_Init() to
initialize the power management module. If you have VisualDSP++ first get it to work using the
simulator and then try it out using the target. 

If you are quite new to BF DSPs then please take a look at the online training tutorials
located at,

http://my.analog.com/onlinetraining/Static/BOLDList.html

Particularly take a look at,

* Introduction to VisualDSP++® Tools (Jan. 2006) (if you have VisualDSP++)
* Basics of Building a Blackfin® Application (Jan. 2006)
* Blackfin System Services (Jan. 2006) (this one talks about the power management module that I
mentioned earlier)

HTH,

Chamira.

malli_1729 <m...@yahoo.co.in> wrote:                                  Hi!
 
 Iam new to the  DSP processors.....
 
 I have a small doubt...
 Actually  in the datasheets they are giving that BF533 can work upto 
 600MHz(maximum performance)...and SCLK 133Mhz....
 
 When iam working with the BF533ez-kit lite, how would i know that it is 
 running at Coreclk and SCLK...
 
 PLease help........????????

Adding to my post: I forgot to mention that to make use of the system services APIs you
need to have VisualDSP++ installed on your PC.

Chamira.

Chamira Perera <c...@yahoo.com> wrote:                                  In the Device
Drivers and System Services Manual for Blackfin Processors please take a look at the
adi_pwr_GetFreq() API. You can use it to obtain the core and system clock frequencies. However
before calling adi_pwr_GetFreq() you will have to call adi_pwr_Init() to initialize the power
management module. If you have VisualDSP++ first get it to work using the simulator and then
try it out using the target. 
 
 If you are quite new to BF DSPs then please take a look at the online training tutorials
located at,
 
 http://my.analog.com/onlinetraining/Static/BOLDList.html
 
 Particularly take a look at,
 
 * Introduction to VisualDSP++® Tools (Jan. 2006) (if you have VisualDSP++)
 * Basics of Building a Blackfin® Application (Jan. 2006)
 * Blackfin System Services (Jan. 2006) (this one talks about the power management module that
I mentioned earlier)
 
 HTH,
 
 Chamira.
 
 malli_1729 <m...@yahoo.co.in> wrote:                                  Hi!
  
  Iam new to the  DSP processors.....
  
  I have a small doubt...
  Actually  in the datasheets they are giving that BF533 can work upto 
  600MHz(maximum performance)...and SCLK 133Mhz....
  
  When iam working with the BF533ez-kit lite, how would i know that it is 
  running at Coreclk and SCLK...
  
  PLease help........????????

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