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Observer arash-rezaee
Observer
4,675 Views
Registered: ‎06-12-2012

Problem with Reloadable FIR Filter

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Hi every one. I have a problem with reloadable FIR in sysgen. I have 2 RAM, one for input of filter and one for coefficient of FIR filter. My sampling period is (1.09375e-7). When I add ceff_WE and coeff_LD with same sampling period, sysgen give me error which is:

ERROR: Incorrect rate on coefficient reload port: COEF_DIN, COEF_LD, COEF_WD must all be at the core operating rate (1).
Error occurred during "Rate and Type Error Checking".

 

Basically I don`t know how to specify the sample rate of FIR filter.

 

Would you mind help me?

 

Regards,

Arash

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Xilinx Employee
Xilinx Employee
7,444 Views
Registered: ‎08-02-2011

Re: Problem with Reloadable FIR Filter

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First, you should make sure to use normalized rates when working with sysgen.

Anyway, you can specify the rate of the filter when you configure the core. But you need to make sure you drive each of the interfaces with the appropriate sampling rate.

To see the rate of each port, open the sysgen token, go to the general tab, and select 'Normalized Sample Periods' for the block icon display.
www.xilinx.com
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Xilinx Employee
Xilinx Employee
7,445 Views
Registered: ‎08-02-2011

Re: Problem with Reloadable FIR Filter

Jump to solution
First, you should make sure to use normalized rates when working with sysgen.

Anyway, you can specify the rate of the filter when you configure the core. But you need to make sure you drive each of the interfaces with the appropriate sampling rate.

To see the rate of each port, open the sysgen token, go to the general tab, and select 'Normalized Sample Periods' for the block icon display.
www.xilinx.com
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