LM1229VEC National Semiconductor, LM1229VEC Datasheet - Page 11

• Manufacturer Part Number: LM1229VEC
• Description: I2C Compatible CMOS TV RGB and Deflection Processor
• Manufacturer: National Semiconductor

Pin
No.
10
14
15
16
Application Information
11
HDRIVE
V
FOCUS
Pin Name
CC
EW
SDA
SCL
& GND
OUT
OUT
OUT
(Continued)
Schematic
11
EW
pincushion, trapezoid and top and bottom
corners. Its lowest voltage is in the middle of
vertical scan. The amplitudes of these functions
are register controlled.
FOCUS
adjustment. The peak to peak amplitude is
register controlled and if it is used for both
horizontal and vertical dynamic focus, their
amplitudes will be controlled proportionately.
Power supply and ground pin for all the LM1229.
Note the recommended charge storage and high
frequency capacitors which should be as close to
pins wherever possible.
This is the horizontal drive output. When this
output is low, the horizontal output transistor is
on and a positive edge at pin 14 starts the
flyback pulse. The duty cycle slowly increases to
50% when power is applied. The output sink
current should not exceed 10 mA.
The I
of about 4.7 kΩ should be connected between
this pin and V
should be connected in series with the clock line
for additional ESD protection.
The I
about 4.7 kΩ should be connected between this
pin and V
be connected in series with the data line for
additional ESD protection.
OUT
2
2
C compatible clock line. A pull-up resistor
C compatible data line. A pull-up resistor of
OUT
is the output used for control of width,
CC
. A resistor of at least 100Ω should
is used for dynamic focus
CC
. A resistor of at least 100Ω
Description
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