LG -A290 Service Manual page 54

MIC Signal
Audio Signal
Speech Signal
Audio + Speech Signal
MT6253
DSP
FM Recording(AMR type)
AU_FMINR/L
BT SPEECH
BT SOUND PLAY
MT6626
BT + FM Radio
(PCM, UART +I2C IF)
LGE Internal Use Only
AU_IN1_P/N
(Di erential Input)
AU_IN0_P/N
(Di erential Input)
JACK DETECT
HS SOUND R/L
SOUND R/L
AU_MOUTR/L
(Single ended Output)
AU_OUT0_P/N
(Di erential Output)
HS SPEECH P/N
SPEECH P/N
SPK PHONE P/N
SPK1_P/N
NA
SPEECH N/P
This path is changeable. It will be xed after REV.B
Figure 3.13.6 A290 Audio Block Diagram
MAIN_MIC_P/N
HS_MIC_P/N
HS MP3/MID R/L
Audio Sub
HS FM Radio
System
HS SPEECH P/N
(I2C IF)
TPA2055P3
SOUND R/L
FM Radio R/L
SPEECH P/N
SPK PHONE P/N
- 54 - Copyright © 01 LG Electronics. Inc. All right reserved.
3. TECHNICAL BRIEF
TI MINI
ABB
(I2C IF)
HOOK DETECT
HOOK DETECT
EAN62227701
3.5Ø
Conn
RCV/SPK
Only for training and service purposes