28LW-92H (serv.man2) - Sharp TV Service Manual (repair manual). Page 22

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CHASSIS
SIF AGC for gain controlled SIF amplifier; single reference QSS mixer able to operate in high performance 
single reference QSS mode and in intercarrier mode, switchable via I
2
C-bus 
AM demodulator without extra reference circuit 
Alignment-free selective FM-PLL demodulator with high linearity and low noise 
I
2
C-bus control for all functions 
I
2
C-bus transceiver with pin programmable Module Address (MAD).
 
13.13.3.Pinning 
 
SYMBOL PIN  DESCRIPTION 
VIF1 1 
VIF differential input 1
 
VIF2 
 
VIF differential input 2
 
OP1 
 
output 1 (open-collector)
 
FMPLL
 
FM-PLL for loop filter
 
DEEM
 
de-emphasis output for capacitor
 
AFD 
AF decoupling input for capacitor 
DGND 
digital ground 
AUD 
audio output 
TOP 
tuner AGC TakeOver Point (TOP) 
SDA 
10 
I
2
C-bus data input/output 
SCL 
11 
I
2
C-bus clock input 
SIOMA 
12 
sound intercarrier output and MAD select 
n.c. 
13 
not connected 
TAGC 
14 
tuner AGC output 
REF 
15 
4 MHz crystal or reference input 
VAGC 
16 
VIF-AGC for capacitor; note 1 
CVBS 
17 
video output 
AGND 
18 
analog ground 
VPLL 
19 
VIF-PLL for loop filter 
V
P
 20 
supply voltage (+5 V) 
AFC 
21 
AFC output 
OP2 
22 
output 2 (open-collector) 
SIF1 
23 
SIF differential input 1 
SIF2 
24 
SIF differential input 2 
 
13.14.PI5V330 
13.14.1.General Description 
The PI5V330 is well suited for video applications when switching composite or RGB analog. 
 
 
 
 
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