Key IC Description
1.UOC3
Function
˖
TV signal processor with Teletext and Nicam
PIN SYMBOL
DESCRIPTION
1
VSSP2
ground
2
VSSC4
ground
3
VDDC4
Digital supply to SDACs(1.8V)
4
VDDA3(3.3V)
Supply(3.3V)
5
VREF_POS_LSL
Positive reference voltage SDAC(3.3V)
6
VREF_HPL
Negative reference voltage SDAC(0V)
7
VREF_HPR
Positive reference voltage SDAC(3.3V)
8
VREF_HRP Negative reference voltage SDAC(0V)
9
VREF_POS_HPR
Positive reference voltage SDAC(3.3V)
10
XTALIN
Crystal oscillator input
11
XTALOUT
Crystal oscillator output
12
VSSA1
ground
13
VGUARD/SWIO
V-guard input/I/O switch (e.g.4mA current sinking
capability for direct drive of LEDs)
14
DECDIG
Decoupling digital supply
15
VP1
1
st
supply voltage TV-pro5V)
16
PH2LF
Phase-2 filter
17
PH1LF
Phase-1 filter
18
GND1
Ground 1 for TV-processor
19
SECPLL
SECAM OLL decoupling
20
DECBG
Bandgap decoupling
21
EWD/AVL
East-West drive output or AVL capacitor
22
VDRB
Vertical drive B output
23
VDRA
Vertical drive A output
24
VIFIN1
IF input 1
25
VIFIN2
IF input 2
26
VSC
Vertical sawtooth capacitor
27
IREF
Reference current input
28
GNDIF
Ground connection for IF amplifier
29
SIFN1/DVBIN1
SIF input 1/ DVB input 1
30
SIFN2/DVBIN2
SIF input 2/ DVB input2
31
AGCOUT
Tuner AGC output
32
EHTO
EHT/over voltage protection input
33
AVL/SWO/SSIF/REFO/
REFIN
Automatic volume leveling/switch output/sound IF
input sub-carrier reference output/external reference
signal mixer for DVB operation
Содержание HLH19BB
Страница 1: ...HLH19BB TV 8888 68 ...
Страница 8: ...4 images of Power Supply 5 images of Inverter ...
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