Read Sharp 28LW-92H (serv.man2) Service Manual online
22
AK - 45
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
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
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
2
VIF differential input 2
OP1
3
output 1 (open-collector)
FMPLL
4
FM-PLL for loop filter
DEEM
5
de-emphasis output for capacitor
AFD
6
AF decoupling input for capacitor
DGND
7
digital ground
AUD
8
audio output
TOP
9
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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