Output Configuration

Output Data Configuration tab supports configuring output-related parameters.

 

	Parameter	Description
	Data Type	Setting output data type
	SPI Transmission Rate	SPI transmission rate, Recommend 15.89MHz.
	RAW Sample Offset	Starting position when performing DSP on RAW data
	RAW Sample Step	Down-sampling step when performing DSP on RAW data.
	RAW Sample Size	Number of samples when performing DSP on RAW data.
	1DFFT Compute Size	Length of 1DFFT when performing DSP.
	1DFFT Output Size	Length of 1DFFT output by DSP.
	2DFFT Line Num	Line number of 2DFFT when performing DSP.

 

 

 

 

 

1. Data Type

Decide which stage you want to receive data output from the DSP block.

Parameter	Default	Range	Description
Data Type	1DFFT	DSRAW 1DFFT 2DFFT 2DFFT_PEAK	DSRAW: down sampling RAW data, mainly used for debugging serial data 1DFFT: slave board driver outputs 1DFFT data 2DFFT: slave board driver outputs 2DFFT data 2DFFT_PEAK: slave board driver outputs the maximum values of 2DFFT

 

 

 

 

 

 

2. Raw Data(DSRAW)

EVBKS5 outputs the following data types: 1DFFT, 2DFFT, 2DFFT_PEAK, and DSRAW, which are all processed from RAW data.

The sample rate of EVBKS5 is fixed to 2.5MSPS. 

It is highly recommended →  (1) T0x2.5M < RAW Sample Offset,  (2) T1x2.5M > RAW Sample Step x RAW Sample Size.

 

 

 

Parameter	Default	Range	Description
RAW Sample Offset	256	1~1024	Offset/Start-point  when sampling RAW data
RAW Sample Step	4	1, 2, 4, 8 @Ouput Type=DSRAW	Step/Interval when sampling RAW data
		1, 2, 3, 4 @The other Data Type
RAW Sample Size	256	64, 128, 256, 512, 1024	The size of RAW data(DSRAW Data) that is sampled

 

 

 

 

 

 

 

 

3. 1D-FFT

Parameter	Default	Range	Description
1DFFT Compute Size	256	64, 128, 256	The size of data in a 1DFFT
1DFFT Output Size	64	1 ~1DFFT computation size	Output size after 1DFFT process. It must be no bigger than 1DFFT computation size

 

 

 

 

 

 

4. 2D-FFT

2DFFT Line Num: for setting the line number of 2DFFT when performing DSP.

 

Parameter	Default	Range	Description
2DFFT Line Number	32	The power of 2	Chirp number in the 2DFFT process, 1. It must be no bigger than the Chirp number in a frame, ( suggested to be equal to Chirp No. per Frame) 2. It must be a certain power of 2; 3. Data Size = 2DFFT Line Number x 1DFFT Output Size = 1024.

 

 

 

 

 

5. 2D-FFT Peak

slave board driver outputs the maximum values of 2DFFT

2DFFT 결과에서 에너지 레벨이 가장 놓은 9개의 리스트를 출력한다.