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hELP::CM8870 DTMF decoder problem

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khaldun904

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i am using cm8870 decoder and i want to connect it to my 6630 Nokia using headphone but when i connect the power its output lights ( 3 leds and the StD led )with or without input it dose not change. i do not know where is the problem is it in the connection that i connect it using the data sheet or what.

pleeease help its for my project...........................................................................H.E.L.P.M.E.P.L.E.A.S.E.......................................
 

supra_56

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i am using cm8870 decoder and i want to connect it to my 6630 Nokia using headphone but when i connect the power its output lights ( 3 leds and the StD led )with or without input it dose not change. i do not know where is the problem is it in the connection that i connect it using the data sheet or what.

pleeease help its for my project...........................................................................H.E.L.P.M.E.P.L.E.A.S.E.......................................


Nokia Schematic 6630 | cellphone schematic
 

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