Pinning (Qfp-80 Envelope) - Changhong Electric PF29T18 Service Manual

(4) Pinning (QFP-80 ENVELOPE)

Symbol
P3.1/ADC1
P3.2/ADC2
P3.3/ADC3
VSSC/P
P0.5
P0.6/CVBSTD
VSSA
SECPLL
VP2
DECDIG
PH2LF
PH1LF
GND3
DECBG
EWD
VDRB
VDRA
IFIN1
IFIN2
IREF
VSC
AGCOUT
SIFIN1/DVBIN1 (1)
SIFIN2/DVBIN2 (1)
GND2
SNDPLL
AVL/REF0/SNDIF/
REFIN (1)
AUDIO2
AUDIO3
HOUT
FBISO
DECSDEM
QSSO/AMOUT/
AUDEEM (1)
EHTO
PLLIF
SIFAGC/DVBAGC (1)
INTCO/DVBO (1)
IFVO/SVO/DVBO (1)
VP1
CVBS1
GND
SERVICE MANUAL
Pin
QFP-80 SDIP-64
1 6 port 3.1 or ADC1 input
2 7 port 3.2 or ADC2 input
3 8 port 3.3 or ADC3 input
4 9 digital ground for m-Controller core and periphery
5 10 port 0.5 (8 mA current sinking capability for direct drive of LEDs)
port 0.6 (8 mA current sinking capability for direct drive of LEDs) or
6 11
Composite video input. A positive-going 1V(peak-to-peak) input is
required
7 12 digital ground of TV-processor
8 13 SECAM PLL decoupling
9 14 2nd supply voltage TV-processor (+8V)
10 15 supply voltage decoupling of digital circuit of TV-processor
11 16 phase-2 filter
12 17 phase-1 filter
13 18 ground 3 for TV-processor
14 19 bandgap decoupling
15 20 East-West drive output
16 21 vertical drive B output
17 22 vertical drive A output
18 23 IF input 1
19 24 IF input 2
20 25 reference current input
21 26 vertical sawtooth capacitor
22 27 tuner AGC output
23 28 SIF input 1 / DVB input 1
24 29 SIF input 2 / DVB input 2
25 30 ground 2 for TV processor
narrow band PLL filter
26 -
Automatic Volume Levelling / subcarrier reference output / sound IF
27 32
input /
external reference signal input for I signal mixer for DVB operation
28 - audio 2 input
29 - audio 3 input
30 33 horizontal output
31 34 flyback input/sandcastle output
decoupling sound demodulator
32 -
QSS intercarrier output / AM output in stereo applications or
33 35
deemphasis
(front-end audio out) / AM output in mono applications
34 36 EHT/over voltage protection input
35 37 IF-PLL loop filter
36 31 AGC sound IF / internal-external AGC for DVB applications
37 - intercarrier output (from QSS or vision IF amplifier) / DVB output
38 38 IF video output / selected CVBS output / DVB output
39 39 main supply voltage TV processor
40 40 internal CVBS input
41 41 ground for TV processor
Description
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