STW8009 datasheet(40/66 Pages) STMICROELECTRONICS

40 / 66 page

STw8009/STw8019

Control registers

39/65

Default values:

The FIR symmetrical filter has the following response:

The filter working frequency is comprised in the range [pix_clk, 27 MHz] and the filtering is

done on upsampled signal (half pix_clk to pix_clk frequency by padding by zeros).

chroma_main_coef4 = Actual value + 32;

chroma_main_coef5 = Actual value + 32;

chroma_main_coef6 = Actual value

chroma_main_coef7 = Actual value

chroma_main_coef8 = Actual value

chroma_main_coef0[4:0] = 10001

means c0 = 1.

chroma_main_coef1[5:0] = 100111

means c1 = 7;

chroma_main_coef2[6:0] = 1010100

means c2= 20;

chroma_main_coef3[6:0] = 1000111

means c3 = 39;

chroma_main_coef4[7:0] = 01011111

means c4 = 63;

chroma_main_coef5[7:0] = 01110111

means c5 = 87;

chroma_main_coef6[7:0] = 01101100

means c6 = 108;

chroma_main_coef7[7:0] = 01111011

means c7 = 123;

chroma_main_coef8[8:0] = 010000000

means c8 = 128.

()

–

+ 7z

–

7 z

–

+ 2z

–

0 z

–

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