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參數(shù)資料
| 型號： | TDA9112 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 偏轉(zhuǎn) |
| 英文描述： | HORIZ/VERT DEFLECTION IC, PDIP32 |
| 封裝： | PLASTIC, SDIP-32 |
| 文件頁數(shù)： | 30/51頁 |
| 文件大?。?/td> | 809K |
| 代理商： | TDA9112 |
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TDA9112
36/51
Figure 13. EWOut output waveforms
9.6 - DYNAMIC CORRECTION
OUTPUTS SECTION
9.6.1 - Composite horizontal and vertical
dynamic correction output HVDyCor
A composite waveform is output on pin HVDyCor.
It consists of a parabola of vertical deflection fre-
quency, on which a parabola of horizontal deflec-
tion frequency is superimposed. The two parabolic
components can independently be adjusted via
I2C bus, the vertical parabola in amplitude (
HVDC-
VAMP I2C bus control), the horizontal parabola in
amplitude and phase (
HVDC-HAMP and HVDC-
HSYM I2C bus controls). See also I2C BUS CON-
TROL REGISTER MAP chapter. The influence of
the vertical component can be nullified by adjust-
ing its control to minimum. The minimum value in
horizontal parabola amplitude I2C bus control
does not correspond to null horizontal amplitude.
Refer to Figure 14. The phase of the horizontal pa-
rabola can roughly be adjusted via
HDyCorPh I2C
bus bit to coincide either with the beginning or the
middle of the H-flyback pulse. Moreover, its centre
can be offset via
HVDC-HSYM I2C bus control.
There is a flat part of a quasi-constant length at the
beginning of the horizontal parabola. Refer to elec-
trical specifications for values.
As the vertical parabola component is generated
from the output vertical deflection drive waveform
(see Figure 12), it tracks with real vertical ampli-
tude and position (including breathing compensa-
tion). It is also affected by C- and S-corrections.
The horizontal parabola component tracks with
value in
HSIZE control and is horizontal breathing
compensated if
HDyCorTr I2C bit is set to 1 (0 by
default).
9.6.2 - Vertical dynamic correction output
VDyCor
A parabola at vertical deflection frequency is avail-
able on pin VDyCor. Its amplitude is adjustable via
VDC-AMP I2C bus control and polarity controlled
via VDyCorPol I2C bus bit. It tracks with real vertical
amplitude and position (including breathing com-
Keystone
PCC
Top
Bottom
Corners
Vertical sawtooth
alone
tVR
V(VCap)
0
TVR
0
V(EWOut)
alone
o
p
e
rat
ing
ra
ng
e
VEW-PCC
VEW-TCor
VEW-BCor
VEW-Key
V
EW
VEW-DC
V(HEHT)
VRefO
VHEHT(min)
HSIZE (I2C)
mini
mum
medi
um
max
imu
m
VEW(min)
VEW(max)
n
on-
autho
ri
zed
reg
io
n
Vertical sawtooth
tVR
V(VCap)
0
TVR
0
VRefO
VHEHT(min)
Breathing
compensation
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