LG KE990 Service Manual - Page 26

FM Radio U103 : TEA5766UK

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3. TECHNICAL BRIEF 3.4.6 FM Radio (U103 : TEA5766UK) This FM Module is a single chip, electronically tuned, FM stereo radio with RDS/RBDS demodulator and decoder for low voltage applications, with fully integrated IF selectivity and demodulation. This equipment tunes the European, US, and Japanese FM bands. Figure3.4.6 shows the FM Radio system architecture in the KE990. From MMI FM_AN T RFIN1 RFIN2 FM Radio TEA5766 UK Phili ps FREQIN BU SEN INTX CLOCK DA TA VA FR VA FL 32.768KH z From PMIC FM_AUD IO_R/L MIDI_ EA R_ R/L To MMI Headphon e AMP MAX9722 BETE HP_ EA R_R/L To SPEAK ER SPK _OUT+/- Aud io Cod ec WM8983 HP_SPK _R/L GRFC3_GPIO 6 GRFC4_AU X_SBC K_GPIO7 I2 C_ SCL _GPIO 27 I2 C_ SDA _GPIO 26 ESM6270 [Figure 3.4.6] Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 27 - LGE Internal Use Only

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- 27 -
3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
3.4.6 FM Radio (U103 : TEA5766UK)
This FM Module is a single chip, electronically tuned, FM stereo radio with RDS/RBDS demodulator
and decoder for low voltage applications, with fully integrated IF selectivity and demodulation. This
equipment tunes the European, US, and Japanese FM bands. Figure3.4.6 shows the FM Radio
system architecture in the KE990.
[Figure 3.4.6]
FM Radio
TEA5766 UK
Philip
s
VAFR
VAFL
RFIN1
RFIN
2
FM_AN
T
CLOCK
DATA
FREQI
N
INT
X
BUSE
N
ESM6270
I2C_SCL_GPIO27
I2C_SDA_GPIO26
GRFC4_AUX_SBCK_GPIO7
GRFC3_GPIO6
From MMI
Audio Codec
WM898
3
32.768KHz
From PMIC
HP_SPK _R/
L
FM_AUD IO_R/L
Headphon e
AMP
MAX9722 BET
E
HP_EAR_R/
L
MIDI_EAR_R/
L
To
MMI
SPK _OUT+/
-
To
SPEAK ER