hello,
how can I record from mp3 player to ISD2590 chip.. the manual shows recording from microphone but from other source Ihave no idea.. what are the necessary connections needed(in modes and addreses)..
Regards
I connected the headphone outlet directly(without any attenuator) to the mic inlet but the sound heared from the chip has many noise (why is this in terms of Volt and Frequency)..
are the 1K and 47K resistors enough attenuator and which one is connected to the ground?
Hi Hero,
thanks for your help..the noise has been reduced but still appeare with sound and how can I controle the volume of the sound because I need a louder volume than the resulted one?
Dear Hero,
what do you think if I connected the mp3 headphone outlet to the ANA IN pin coz it has amplifier(please see internal circuit of the ISD2590).. the voltage from the headphone is 1.5mv and the mic inlet accept max 20mv so we need to amplify it not divide it .. am I correct??
Regards,
ktkoota