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ICs Function Description
1.UOC3
Function：TV signal processor with Teletext and Nicam
PIN SYMBOL
1
VSSP2
2
VSSC4
3
VDDC4
4
VDDA3(3.3V)
5
VREF_POS_LSL
6
VREF_NEG_LSL+HPL
7
VREF_POS_LSR+HPR
8
VREF_NEG_HPL+HRP Negative reference voltage SDAC(0V)
9
VREF_POS_HPR
10
XTALIN
11
XTALOUT
12
VSSA1
13
VGUARD/SWIO
14
DECDIG
15
VP1
16
PH2LF
17
PH1LF
18
GND1
19
SECPLL
20
DECBG
21
EWD/AVL
22
VDRB
23
VDRA
24
VIFIN1
25
VIFIN2
26
VSC
27
IREF
28
GNDIF
29
SIFN1/DVBIN1
30
SIFN2/DVBIN2
31
AGCOUT
32
EHTO
AVL/SWO/SSIF/REFO/
33
REFIN
DESCRIPTION
ground
ground
Digital supply to SDACs(1.8V)
Supply(3.3V)
Positive reference voltage SDAC(3.3V)
Negative reference voltage SDAC(0V)
Positive reference voltage SDAC(3.3V)
Positive reference voltage SDAC(3.3V)
Crystal oscillator input
Crystal oscillator output
ground
V-guard input/I/O switch (e.g.4mA current sinking
capability for direct drive of LEDs)
Decoupling digital supply
st
1
supply voltage TV-processor(+5V)
Phase-2 filter
Phase-1 filter
Ground 1 for TV-processor
SECAM OLL decoupling
Bandgap decoupling
East-West drive output or AVL capacitor
Vertical drive B output
Vertical drive A output
IF input 1
IF input 2
Vertical sawtooth capacitor
Reference current input
Ground connection for IF amplifier
SIF input 1/ DVB input 1
SIF input 2/ DVB input2
Tuner AGC output
EHT/over voltage protection input
Automatic volume leveling/switch output/sound IF
input sub-carrier reference output/external reference
signal mixer for DVB operation
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