Sanyo AVL209 Service Manual page 16

Descriptions of the pins:
No. Pin name
3 PCSTFILT
4 PCPLDET
5 PISIF
6 GND
9 SIF DEMOD
10 MUTE
3. R2S15900SP audio processor with surround stereo
The audio signal from YPrPb/YcrCb or VGA input interface is selective sent to R2S15900SP through the
multi-channel selector HEF4052BT, while the audio signal from the AV inputs is sent to R2S15900SP
directly.
After the processing of bass, treble, balance and AVL by R2S15900S, all these processed audio signals
will be output to audio amplifier TPA1517 (for 15 inch models) or AN5277 (for other models) to amplify,
then the amplified signal will be sent to the speaker to output. The Fig.1-3 is the block diagram of
AN5277.
Descriptions of the pins of R2S15900SP
Pin Function
2, 7 Left/right input for Channel 1
3, 26 Left/right input for Channel 2
4, 25 Left/right input for Channel 3
4. Inner block diagram of AN5277 audio amplifier with single end and double channels
Connections
VCO PLL filter
Driving level test
SIF signal test
GND
SIF demodulator
Mute (DC=5V)
No. Pin name
11 SDA
12 SCL
24 PCALCFIL
25/26 R/L OUT
27 PCREC
31 VCC
Pin Function
17, 18 SDA, SCL
28 VCC
11, 19 LOUT, ROUT
14
Connections
IIC data input
IIC clock input
ALC filter
TVF_R/L output
Reference voltage
9V power