STV2162
2H - VIDEO SCANNING PROCESSOR
January 1997
PRODUCT PREVIEW
SHRINK56
(Plastic Package)
ORDER CODE : STV2162
VIDEO PART
.
USER CONTROL FUNCTIONS :
CONTRAST, BRIGHTNESS, SATURATION,
COLOR EQUALIZER
.
RGB INPUT WITH FAST-BLANKING FOR
ON-SCREEN-DISPLAY / TELETEXT
.
FAST BLANKING INPUT FOR CONTRAST
REDUCTION (TRANSPARENT MENU BOX)
.
AVERAGE BEAM LIMITER FUNCTION WITH
CONTRAST AND BRIGHTNESS REDUCTION
.
PAL/SECAM OR NTSC MATRIX SWITCHA-
BLE BY BUS
.
AUTOMATIC CUT-OFF LOOP WITH INTE-
GRATED DIGITAL MEMORY AND LEAKAGE
CURRENT COMPENSATION
.
FULL WHITE ADJUSTMENT VIA BUS
.
BUS REPLY FOR TUBE COLD INFORMA-
TION AND CUT-OFF COUNTER STATUS
.
APX (AUTO PIX) : ADAPTIVE CONTRAST
CONTROL
.
COLOR MATCHING (IN CONNECTION WITH
WHITE STRETCH)
.
APL (AUTO PEDESTAL) = ADAPTIVE
BRIGHTNESS
.
WHITE STRETCH
.
VERTICAL AND OVERSIZE BLANKING AC-
CORDING TO ALL ZOOMS
.
INDEPENDENT RIGHT AND LEFT ADJUST-
MENT OF HORIZONTAL OVERSIZE BLANKING
SCANNING PART
.
INTERNAL OR EXTERNAL 27MHz CLOCK
.
VERTICAL SYNCHRONISATION OUTPUT
FOR VIDEO TEXT AND OSD DISPLAY
.
PHI2 LOOP WITH INTERNAL LOOP FILTER
.
PULSE OUTPUT FOR DRIVING HORIZON-
TAL OUTPUT STAGE
.
VERTICAL COUNTDOWN CIRCUIT FOR
CLEAN VERTICAL DEFLECTION
.
INTEGRATED VERTICAL SAWTOOTH GENE-
RATOR WITH AMPLITUDE CONTROL LOOP
.
VERTICAL AND HORIZONTAL BUS ADJUSTA-
BLE SIZE CORRECTION (BREATHING) TO
ADAPT DEFLECTION SENSITIVITY TO THE
CURRENT BEAM
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
.
BUS ADJUSTED VERTICAL PARAMETERS:
VERTICAL AMPLITUDE, VERTICAL POSI-
TION AND S-CORRECTION
.
PANNING FOR VERTICAL DEFLECTION
.
BUS CONTROLLED EAST-WEST FUNCTION
GENERATOR WITH INTEGRATED ERROR
AMPLIFIER
.
VARIABLE FIX-POINTS FOR S-CORRECTION
VERTICAL BLANKING AND EAST-WEST
CORNER CORRECTION
.
SUPER SANDCASTLE OUTPUT
.
VERTICAL POWER SAVE MODE
SMPS PART
.
SMPS PULSE-WIDTH MODULATOR WITH
BUS CONTROLLED REFERENCE VOLTAGE
.
SOFTSTART FOR SMPS MODULATOR,
EVEN IN CASE OF MISSING HORIZONTAL
CLOCK (27MHz)
.
SOFTSTART FOR HORIZONTAL OUTPUT STAGE
.
SMOOTH TRANSITION FROM SOFTSTART
TO NORMAL MODE
.
GENERAL STANDBY MODE CONTROL
.
PROTECTION CIRCUIT FOR OVERLOAD
DETECTION (SHORT CIRCUITS) AND CON-
TROL OF SMPS MODULATOR
.
BUS REPLY FOR OVERLOAD
DESCRIPTION
The STV2162 is an I
2
C bus controlled Video and
Deflexion Processor for 2H-Deflection Television
Sets. The IC incorporates also an secondary SMPS
(Switch Mode Power Supply) controller with Soft-
start and Protection facilities.
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
49
50
51
52
53
54
55
56
YOUT
RES55
RES54
Y
NC
CONVAR
FBTXT
APX
BTXT
GTXT
RTXT
GNDVID
V
CCVID
ICUTOFF
ROUT
GOUT
BOUT
VABL
HDRIVE
SMPSOUT
TXT_OUT
SSC
GND1
HFLY
EWOUT
SMPSIN
EWIN
CVERT
Y OUTPUT OF WHITE STRETCH
RESERVED
RESERVED
Y INPUT VIDEO OF MAIN SIGNAL
NOT CONNECTED
CONTRAST VARIATION (FOR TRANSPARENT MENU)
FAST BLANKING INPUT FOR TEXT/OSD
AUTO PIX CAPACITOR
BLUE INPUT TEXT/OSD
GREEN INPUT TEXT/OSD
RED INPUT TEXT/OSD
GROUND FOR VIDEO PART
V
CC
FOR VIDEO PART
CUT-OFF AND LEAKAGE MEASUREMENT
RED OUTPUT
GREEN OUTPUT
BLUE OUTPUT
AVERAGE BEAM LIMITER INPUT
OUTPUT FOR HORIZONTAL DRIVER
PWM OUTPUT FOR SMPS
SYNC OUTPUT FOR TELETEXT/OSD
SSC SUPER SANDCASTLE OUTPUT
GROUND FOR SCANNING PART
HORIZONTAL FLYBACK INTERFACE
EAST/WEST OUTPUT
VOLTAGE INPUT FOR SMPS ERROR AMPLIFIER
EAST/WEST INPUT OF ERROR AMPLIFIER
VERTICAL AGC CAPACITOR
WS
UIN
VIN
YIN
APL
VDFL
HDFL
LDFL
NC
GNDLIN
V
CCLIN
NC
BCUTREF
GCUTREF
RCUTREF
CSOFT
SCL
SDA
V5V
SLPF
V
CC1
COLM
I
REF
REG
FROUT
SENSEP
BREATH
SENSEM
WHITE STRETCH CAPACITOR
U INPUT
V INPUT
Y INPUT
APL CONTROL
VERTICAL SYNC INPUT
HORIZONTAL SYNC INPUT
27MHz CLOCK
NOT CONNECTED
GROUND
COLOR MATCHING
V
CC
NOT CONNECTED
BLUE CUT-OFF REFERENCE
GREEN CUT-OFF REFERENCE
RED CUT-OFF REFERENCE
SOFSTART CAPACITOR
SERIAL CLOCK (I
2
C BUS)
SERIAL DATA (I
2
C BUS)
5V STANDBY (SHUNT REGULATOR)
LOOP
1 LOW PASS FILTER
V
CC
FOR SCANNING PART
REFERENCE RESISTOR FOR CURRENT
REGULATOR OUTPUT
VERTICAL SAWTOOTH ERROR OUTPUT
RESISTOR BRIDGE POSITIVE INPUT
RESISTOR BRIDGE NEGATIVE INPUT
THT MODULATION AND PROTECTION
21
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0
1.
E
P
S
PIN CONNECTIONS
PIN DESCRIPTION
Pin
Name
Function
Description, Test Conditions, Remark
1
WS
Time Constant
White stretch time constant adjustment. External capacitor, internal 200k
resistor.
2
UIN
Input
B-Y signal, AC coupling
3
VIN
Input
R-Y signal, AC coupling
4
YIN
Input
Luminance before white stretch, AC coupling
5
APL
Time Constant
Auto Pedestal (APL) time constant. External capacitor, internal 200k
resistor
6
VDFL
Input
Vertical synchro
7
HDFL
Input
Horizontal synchro
8
LDFL
Input
27MHz Line Clock
9
NC
Reserved
Not connected
10
GNDLIN
Power supply
Ground for Scanning Logic
11
COLM
Control
Color Matching strength. This pin must be grounded through a resistor .
Resistor value determines Color Matching effect :
0 (short Circuit) = no effect, 44k
= maximal Colormatching.
12
V
CCLIN
Power supply
V
CC
for Scanning Logic
13
NC
-
Not Connected
14
BCUTREF
Reference
Clamping B. Capacitor 47nF against Ground : cut-off Black Reference.
15
GCUTREF
Reference
Clamping G. Capacitor 47nF against Ground : cut-off Black Reference.
21
62
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0
1
.
T
B
L
STV2162
2/14
Pin
Name
Function
Description, Test Conditions, Remark
16
RCUTREF
Reference
Clamping R. Capacitor 47nF against Ground : cut-off Black Reference.
17
CSOFT
Time Constant
Capacitor for softstart, value determines softstart time (typ. 220
F).
18
SCL
Input
Serial Clock for I
2
C bus
19
SDA
Input
Serial Data for I
2
C bus (pull down - capability for acknowledge and data reply)
20
V5V
Power supply
Voltage supply for standby biasing, voltage is regulated via internal shunt
regulator
21
SLPF
Time Constant
Loop filter for horizontal VCO
22
V
CC1
Power supply
Supply voltage for Scanning part, connected with external series regulator
transistor.
23
I
REF
Current
Reference
External programming resistor 1% metal type (25k
against V
CC1
). Determines
the horizontal free running frequency.
24
REG
Output
Output for controlling the external regulator transistor
25
FROUT
Output
Output of transconductance Frame Amplifier, pin has to be connected to the
inverting input of the vertical power amplifier.
26
SENSEP
Input
Input of internal resistor bridge for sensing the vertical deflection yoke current
27
SENSEM
Input
Input of Internal resistor bridge for sensing the vertical deflection yoke current
28
BREATH
Input
Two functions :
- if input voltage >1.5V, Vertical size (V_BREATING) and Horizontal width
(H_BREATING) compensation.
- if pin pulled down by external transistor : protection activated.
29
CVERT
Reference
Regulation of vertical sawtooth amplitude
30
EWIN
Input
Input of the error-amplifier for the East-West modulator
31
SMPSIN
Input
Input for the secondary Switch Mode Power Supply pulse width modulator
32
EWOUT
Output
Output of the error amplifier for the East-West modulator (current output, biasing
directly the darlington output transistor
33
HFLY
Input
Horizontal Flyback Input
34
GND1
Power supply
Ground for all scanning functions
35
SSCOUT
Output
Super sandcastle output from the scanning processor part.
36
TXTOUT
Output
Composite 2H synchro for Teletext, OSD, ...
37
SMPSOUT
Output
Output for SMPS driver transistor
38
HDRIVE
Output
Open collector output for the horizontal line transistor
39
VABL
Input
Voltage input for the Average Beam Limiter function
40
BOUT
Output
Video output blue channel
41
GOUT
Output
Video output green channel
42
ROUT
Output
Video output red channel
43
ICUTOFF
Input
Input for the leakage and cut-off current measurement
44
V
CCVID
Power supply
Voltage supply for the video part
45
GNDVID
Power supply
Ground for video
46
RTXT
Input
Input for red channel of TEXT/OSD
47
GTXT
Input
Input for green channel of TEXT/OSD
48
BTXT
Input
Input for blue channel of TEXT/OSD
49
APX
Time constant
External capacitor and resistor to determine the attack and delay time of the APX
detector
50
FBTXT
Input
Fast Blanking input for TXT/OSD insertion (VFBTXT = 0 . . 3 V)
51
CONVAR
Input
Voltage at this Input decreases instantaneously the Contrast : Contrast-reduction
for transparent Menu box
52
NC
Reserved
Not connected
53
Y
Input
Video input Y channel
54
RES54
Reserved
Must be grounded
55
RES55
Reserved
Must be grounded
56
YOUT
Luma Output
Signal
Luminance output after white stretch.
(Application : connect YOUT with Y (Video Part) via capacitor of 47nF.)
21
62
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0
1
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T
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L
PIN DESCRIPTION (continued)
STV2162
3/14
Bus
VREF
Bus
Bus
Bus
Bus
Bus
Bus
RGB
DRI
VE
I
2
C BUS AND
LATCHES
LUMA
AVERAGE
DETECTOR
White Stretch
White Stretch
Control Function
WHITE STRETCH
AVERAGE BEAM
CURRENT LIMITER
CUT-OFF
MEASUREMENT
CONTRAST
SATURATION
BRIGHTNESS
RGB
LI
MI
TER
RGB
MATRI
X
Bus
2H-SANDCASTLE
GENERATOR
Bus
Bus
AUTO
CONTRAST
AUTO
PIEDESTAL
SWITCH
LOGIC
Video
Switch
RGB CLAMPING
AND DE-MATRIX
R
G
B
FB
YIN
VIN
UIN
COLOR
EQUALIZER
VIDEO
PROCESSOR
DEFLECTION PROCESSOR
Bus
VERTICAL
SAWTOOTH
S-CORRECTION
&
VERTICAL
BREATHING
EAST-WEST
CORRECTION
VERTICAL
LOGIC
PROTECTION
SMPS
SOFT-START
HORIZONTAL
FLYBACK
INTERFACE
START-UP
LOGIC
VOLTAGE AND
CURRENT
REFERENCE
TIME BASE
SMPS
OUT
SMPS
IN
CSOFT
HDRIVE
HFLY
PHI2 LOOP
VDFL
IREF
SYNCHRO
FOR
TXT OUT
HDFL
LDFL
YIN
SSC
ROUT
ICUTOFF
VABL
GOUT
BOUT
CVERT
SENSM
FROUT
BREATHING
SENSP
EWIN
EWOUT
STV2162
SDA
SCL
1 LOOP
2162-02.EPS
BL
O
CK DI
A
G
RAM
ST
V216
2
4/
1
4
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V5V
Own Protection structure (Power-Zener-Protection-Diode) (Pin 20)
6
V
SCL,SDA
Protection Structures connected to V5V (each of this pin has an
own Power-Zener-Protection Diode) (Pins 18-19)
7
V
VCCLIN,
VCCVID,
V
CC1
Voltage regulated via ext.Transistor (Pins 12-22-44)
8.4V
VSENSP,
VSENSM
Voltage on Pins 26-27
18
V
Toper
Operating Ambient Temperature
0, 70
o
C
Tstg
Storage Temperature
-55 , +150
o
C
21
62
-
0
2.
T
B
L
THERMAL DATA
Symbol
Parameter
Value
Unit
R
th (j-a)
Junction-ambient Thermal Resistance
Max.
40
o
C/W
21
62
-
0
3
.
T
B
L
STV2162
5/14
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