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The voice input used to audio codec microphone port transmission the voice signal. Microphone
input path to handheld and hands-free application. The handheld used to differential input for main
path. However hands-free used to signal input transmission voice the uplink path.
7.1.2
Multimedia Application Input Circuit Design
The schematic provides audio codec input path circuit design, the two signal input used to voice
path apply to bypass IOTA downlink signal. However one differential input path used to melody
function the transmission. The MP3 utilize audio codec digital input control, data transmission the
I2C digital voice input transfer, the I2C control for audio codec command.
Technical Documentation
TTD_Repair_L3 _Theory of Operation_E61_R1.0.pdf
Release 1.0
06/2006
Page 26 of 33
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