STV2112B Datasheet, PDF (1/24 Pages) STMicroelectronics – BUS-CONTROLLED PAL/SECAM TV PROCESSOR

STV2112B
BUS-CONTROLLED PAL/SECAM TV PROCESSOR
. _I²_{C BUS CONTROL OF ALL FUNCTIONS}
. _{INTEGRATED FILTERS}
(TRAP, BANDPASS, CLOCHE)
. _{INTEGRATED LUMINANCE DELAY LINE}
. _{PAL/SECAM CHROMA DEMODULATORS}
. AUTOMATIC CUT-OFF CURRENT LOOP
. _{TWO RGB INPUTS}
. _{SVHS SWITCH}
. TWO PLLs HORIZONTAL DEFLECTION
. _{VERTICAL COUNT DOWN}
. _{VERY FEW EXTERNAL COMPONENTS}
DESCRIPTION
The STV2112B is a fully bus controlled IC for TV
luma, chroma and deflection processing.
Used with STV8224 (PIF/SIF/switches), TDA1771
or TDA8174 (frame booster),STV2180 (delay line),
it allows to design a PAL/SECAM(BGDKIL) set with
very few external components and no adjustment.
SHRINK42
(Plastic Package)
ORDER CODE : STV2112B
PIN CONNECTIONS
CHROMA/SCANNING GROUND GND2
1
XTAL2 S ELECTION S ELECT
2
4.43MHz XTAL CXTL1
3
CHROMA LOOP FILTER
CLPF
4
ACC CONTROL CAPACITOR
ACC
5
DATA WIRE I²C BUS
S DA
6
CLOCK WIRE I²C BUS
S CL
7
FILTER TUNING FTUN1
8
CLOCHE FILTER TUNING FTUN2
9
VOLUME AND MUTE CONTROL VOLTAGE
VOL
10
IF STANDARD AND S WITCH S ELECTION
S WI
11
OS D BLUE INPUT BOS D
12
OS D GREEN INPUT GOSD
13
OS D RED INPUT ROS D
14
OS D RGB INSERTION FBOSD
15
EXTERNAL BLUE INPUT
BEXT
16
EXTERNAL GREEN INPUT GEXT
17
EXTERNAL RED INPUT
REXT
18
EXTERNAL RGB INSERTION FBEXT
19
CVBS OR LUMINANCE INPUT Y/CVBS
20
BUS/VIDEO GROUND
GND1
21
42
V_{C C2}
41
BYO
CHROMA/SCANNING/BUS S UP P LY
B-Y OUTPUT
40
RYO
R-Y OUTP UT
39
RYI
R-Y INPUT
38
BYI
B-Y INPUT
37
LFB/S C
LINE FLYBACK INPUT/SANDCASTLE OUTP UT
36
HOUT
HORIZONTAL OUTP UT
35
VOUT
VERTICAL OUTP UT
34
VAMP
AMPLITUDE CONTROL VOLTAGE
33
S LPF
S CANNING LOOP FILTER
32
S XTL
503kHz CERAMIC
31
BCL
BEAM CURRENT LIMITER
30
ICAT
CATHODE CURRENT MEASUREMENT
29
RO
RED OUTP UT
28
GO
GREEN OUTP UT
27
BO
BLUE OUTP UT
26
CR
RED CUT-OFF CAPACITOR
25
CB
BLUE CUT-OFF CAPACITOR
24
CG
GREEN CUT-OFF CAPACITOR
23
CHR/SVHS CHROMINANCE INPUT/SVHS S ELECTION
22
V_{C C1}
VIDEO S UPP LY
August 1998
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