Tool/software: Code Composer Studio
Hi,
I am using DSP5509S development board. For my telecom Project (FSK detection), interface codec (HD44233) with Mcbsp.
(using 2.048MHZ-rec clock & Tx clock, 8Khz as rec Sync & Tx Sync)
For example i want to detect 425khz dialtone , that signal given to AnalogINPUT of HD44233. when i am read by mcbsp i have random data like below,
005,242,244,209,024,029,216,198,052,011,035,020,213,008,030,053,203,251,230,023,
013,216,201,008,049,016,204,210,027,004,254,247,219,000,017,219,218,049,008,058,
019,213,207,030,012,202,253,218,023,015,216,201,008,049,001,216,208,024,026,253,
245,222,210,022,193,218,047,008,062,006,214,195,025,013,244,242,209,021,007,222,
009,025,048,203,195,249,023,063,216,245,008,048,016,218,220,024,007,242,246,217,
029,019,216,196,053,011,060,016,213,240,030,009,203,255,195,023,239,216,247,009,
051,025,210,210,025,005,240,244,217,222,016,196,197,063,008,059,006,214,200,025,
015,245,252,209,021,015,222,201,009,054,002,005,214,026,027,236,202,208,009,016,
196,197,062,011,058,022,213,200,030,015,203,253,194,017,027,216,194,011,052,029,
209,053,216,203,008,048,016,194,221,027,004,252,247,217,030,019,216,197,055,008,
036,016,213,201,030,015,203,253,197,023,051,216,202,008,048,005,222,211,025,026,
242,245,222,221,017,199,218,059,008,059,004,214,205,025,012,245,253,214,021,003,
222,207,009,055,002,031,214,026,027,040,202,210,012,016,199,218,058,008,056,022,
213,204,030,012,203,242,194,017,024,216,195,011,053,031,004,209,001,027,059,202,
222,208,219,025,000,247,240,217,017,028,217,198,011,011,003,019,212,053,025,053,
203,251,192,023,204,216,251,009,061,018,214,223,030,007,247,247,216,015,018,218,
199,049,011,039,001,215,054,024,010,202,250,208,021,043,217,245,014,048,006,193,
211,024,026,254,245,209,005,018,219,199,055,011,033,023,213,050,030,011,203,249,
238,022,003,216,206,008,054,018,048,211,026,026,228,244,196,054,017,219,218,051,
How to i identify this signal as 425khz by using above data..
Any other algorithm to convert this data into 425khz, sampling rate information.
anyother application note regarding FSK caller id detection using mcbsp via codec.
I am new to this topic, so help to solve this one.
Thanks
