TDA9112A
HIGH-END I²C CONTROLLED DEFLECTION PROCESSOR
FOR MULTISYNC MONITOR
FEATURES
General
• Advanced I
2
C-bus controlled deflection
processor dedicated for high-end CRT monitors
• Single supply voltage 12V
• Very low jitter
• DC/DC converter controller
• Advanced EW drive
• Advanced asymmetry corrections
• Automatic multistandard synchronization
• 2 dynamic correction waveform outputs
• X-ray protection and Soft-start & stop on
horizontal and DC/DC drive outputs
• I
2
C-bus status register
Horizontal section
• 150 kHz maximum frequency
• Corrections of geometric asymmetry: Pin
cushion asymmetry, Parallelogram, separate
Top/Bottom corner asymmetry
• Tracking of asymmetry corrections with vertical
size and position
• Fully integrated horizontal moiré cancellation
Vertical section
• 200 Hz maximum frequency
• Vertical ramp for DC-coupled output stage with
adjustments of: C-correction, S-correction for
super-flat CRT, Vertical size, Vertical position
• Vertical size and position prescales for factory
adjustment
• Vertical moiré cancellation through vertical
ramp waveform
• Compensation of vertical breathing with EHT
variation; I
2
C-bus gain adjustment
EW section
• Symmetrical geometry corrections: Pin cushion,
Keystone, Top/Bottom corners separately, S-
and W-corrections
• Horizontal size adjustment
• Tracking of EW waveform with Vertical size and
position, horizontal size and frequency
• Compensation of horizontal breathing with EHT
variation, I
2
C-bus gain adjustment
Dynamic correction section
• Generates waveforms for dynamic corrections
like focus, brightness uniformity, ...
• 1 output with vertical dynamic correction
waveform, both polarities, tracking with vertical
size and position
• 1 output with composite HV dynamic correction
waveform, both polarities, shape control on
horizontal waveform component, tracking with
horizontal size
DC/DC controller section
• Step-up and step-down conversion modes
• External sawtooth configuration
• I
2
C-bus-controlled output voltage
• Synchronized on hor. frequency with phase
selection
• Selectable polarity of drive signal
• Protection at H unlock condition
DESCRIPTION
The TDA9112A is a monolithic integrated circuit
assembled in a 32-pin shrink dual-in-line plastic
package. This IC controls all the functions related
to horizontal and vertical deflection in multimode
or multi-frequency computer display monitors.
Combined with other ST components dedicated
for CRT monitors (microcontroller, video preampli-
fier, video amplifier, OSD controller), the
TDA9112A allows fully I
2
C bus-controlled compu-
ter display monitors to be built with a reduced
number of external components.
SDIP 32
(Shrink DIP package)
ORDER CODE:
TDA9112A
October 2003
This is preliminary information on a new product now in development. Details are subject to change without notice.
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1
Table of Contents
1
2
3
4
5
6
PIN CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PIN FUNCTION REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
QUICK REFERENCE DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
ELECTRICAL PARAMETERS AND OPERATING CONDITIONS . . . . . . . . . . . . . . . . . . . . . . 9
6.1 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.2 Supply and Reference voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.3 Synchronization inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.4 Horizontal section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.5 Vertical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.6 EW drive section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.7 Dynamic correction outputs section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.8 DC/DC controller section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.9 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7
8
9
TYPICAL OUTPUT WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
I²C-BUS CONTROL REGISTER MAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
OPERATING DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.1 Supply and control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.1.1 Power supply and voltage references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.1.2 I²C-bus control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.2 Synchronization processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.2.1 Synchronization signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.2.2 Sync. presence detection flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.2.3 MCU controlled sync. selection mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.2.4 Automatic sync. selection mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.3 Horizontal section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.3.2 PLL1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.3.3 Voltage controlled oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
. . . 36
.
9.3.4 PLL2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
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TDA9112A
9.3.5 Dynamic PLL2 phase control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9.3.6 Output Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.3.7 Soft-start and soft-stop on H-drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.3.8 Horizontal moiré cancellation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.4 Vertical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.4.2 S and C corrections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.4.3 Vertical breathing compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.4.4 Vertical after-gain and offset control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.4.5 Vertical moiré . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.4.6 Biasing of vertical booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.5 EW drive section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.6 Dynamic correction outputs section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.6.1 Composite horizontal and vertical dynamic correction output
HVDyCor
. . . . . . . . . 46
9.6.2 Vertical dynamic correction output
VDyCor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.7 DC/DC controller section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.7.1 Synchronization of DC/DC controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
9.7.2 Soft-start and soft-stop on B-drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
9.8 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.8.1 Safety functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.8.2 Composite output
HLckVBk
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
10 INTERNAL SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
11 PACKAGE MECHANICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
12 GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
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TDA9112A
1 PIN CONFIGURATION
H/HVSyn
VSyn
HLckVBk
HOscF
HPLL2C
CO
HGND
RO
HPLL1F
HPosF
HVDyCor
HFly
RefOut
BComp
BRegIn
BISense
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VDyCor
SDA
SCL
Vcc
BOut
GND
HOut
XRay
EWOut
VOut
VCap
VGND
VAGCCap
VOscF
VEHTIn
HEHTIn
4/60
2
HGND
HPLL2C
5
7
10
9
8
6
4
12
HPosF
HPLL1F
RO CO HOscF
HFly
H/HVSyn
Horizontal position
PLL1 speed
1
H-sync
detection
Polarity
handling
26
Phase/frequency
comparator
Horizontal
VCO
25
Phase comparator
Phase shifter
H duty controller
Safety
processor
H-drive
buffer
HOut
2 BLOCK DIAGRAM
ÕÕ
Lock detection
XRay
PLL1
H-moiré controller
H-moiré amplitude
ÕÕÕÕÕ
HLckVBk
3
Pin cushion asymm.
Parallelogram
Top corner asymm.
Bottom corner asymm.
Hor. duty cycle
V-blank
H-lock
28
BOut
16
15
PLL2
BISense
BRegIn
B+ ref.
14
Õ
SDA
I²C-bus control registers
: Multiple bit djustments
31
B+
DC/DC
converter
controller
SCL
30
I²C-bus
interface
BComp
Õ
Õ
HV-dynamic correction
(focus,brightness)
11
Vcc
V-dynamic
correction
Tracking
(focus, brightness)
29
Supply
supervision
V-sync
extraction
& detection
VDyCor amplitude
RefOut
13
Reference
generation
HVDyCor V-amplitude
HVDyCor H-amplitude
HVDyCor H-symmetry
HVDyCor H-shape
HVDyCor
ÕÕÕÕ
Õ
Internal
ref.
EW generator
V-ramp control
GND
27
ÕÕÕÕÕÕÕÕ
V-sync detection
Input selection
Polarity handling
ÕÕÕÕÕ
Vertical oscillator
with AGC
Vertical size & pos.
Prescale size & pos.
S- & C-correction
Vertical moiré
Breathing gain
H size
Pin cushion
Keystone
Top corners
Bottom corners
S-correction
W-correction
Breathing gain
24
EWOut
2
21
19
20
22
32
23
18
17
TDA9112A
VOut
VEHTIn
HEHTIn
VSyn
VAGCCap
VGND
VOscF
VCap VDyCor
TDA9112A
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