-29-
Service Manual CP-099/FS
4-4 TDA9886 IIC-bus controlled single/multi standard Alignment-free IF-PLL
4-4-1- DISCRIPTION
The TDA9885 is an alignment-free single standard(without positive modulation) vision and Sound IF signal PLL.
The TDA9886 is an alignment-free multistandard (PAL,SECAM and NTSC) vision and sound IF signal PLL
demodulator for positive and negative modulation including sound AM and FM processing.
4-4-2- FEATURES
- 5V Supply voltage.
- Gain controlled wide-band Vision Intermediate Frequency (VIF) amplifier (AC-coupled).
- Multistandard true synchronous demodulation with active carrier regeneration (very linear demodulation,good
intermodulation figures, reduced harmonics, excellent pulse response).
- Gated phase detector for L/L accent standard.
- Fully integrated VIF Voltage controlled Oscillator(VCO), alignment-free, frequencies switchable forall negative
and positive modulated standards via I
2
C-bus.
- Digital acquisition help, VIF frequencies of 33.4, 33.9, 38.0, 38.9, 45.75 and 58.75 MHz.
- 4 MHz reference frequency input [signal from Phase-Locked Loop (PLL) tuning system] or operating as crystal
oscillator.
- VIF Automatic Gain Control (AGC) detector for gain control, operating as peak sync detector for negative
modulated signals and as a peak white detector for positive modulated signals.
- Precise fully digital Automatic Frequency control (AFC) detector with 4-bit digital-to-analog converter ; AFC
bits via I2C-bus readable.
- TakeOver Point (TOP) adjustable via I2C-bus or alternatively with potentiometer.
- Fully integrated sound carrier trap for 4.5, 5.5, 6.0 and 6.5 MHz, controlled by FM-PLL oscillator.
- Sound IF (SIF) input for single reference Quasi Split Sound(QSS) mode (PLL controlled).
- 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).
4-4-3 PINNING
SYMBOL PIN
DESCRIPTION
VIF1
1
VIF differential input 1
VIF2
2
VIF differential input 2
OP1
3
DVD Reset (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
SLOMAD
12
sound intercarrier output and
MAD select
SYMBOL PIN
DESCRIPTION
n.c
13
not connected
TAGC
14
tuner AGC output
REF
15
4MHz 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
Vp
20
supply voltage (+5V)
AFC
21
AFC output
OP2
22
output 2(open-collector)
SIF1
23
SIF differential input 1
SIF2
24
SIF differential input 2
Summary of Contents for DDT-21H9ZDF(21")
Page 17: ...16 Service Manual CP 099 FS...
Page 40: ...Service Manual CP 099 FS 39 5 Circuit desription 5 1 Block diagram CP 099...
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Page 71: ...70 CIRCUIT DIAGRAM DQL 1000 SYSTEM_POWER...
Page 75: ...74 CIRCUIT OPERATIONAL DESCRIPTION b TRACKING Block Diagram c MIRROR Block Diagram...
Page 107: ...Service Manual CP 099 FS 106 8 3 DDT 14H9ZZF...
Page 108: ...Service Manual CP 099 FS 107 9 PRINTED CIRCUIT BOARD 9 1 Main PCB CP 099FS...
Page 109: ...Service Manual CP 099 FS 108 9 2 Main PCB CP 099...
Page 110: ...Service Manual CP 099 FS 9 3 Power PCB CP 099 109...
Page 111: ...Service Manual CP 099 FS 9 4Power PCB CP 099FS 110...
Page 112: ...Service Manual CP 099 FS 111 10 SCHEMATIC DIAGRAM 10 1 Main CP 099...
Page 113: ...Service Manual CP 099 FS 112 Main CP 099FS...
Page 114: ...Service Manual CP 099 FS 113 10 2 Power CP 099FS...
Page 115: ...Service Manual CP 099 FS 114 Power CP 099...
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