NJM2256
-11-
Ver.2004-02-17
6. C Inversion
The color phase of the picture shall be inverted for one hundred and eighty degrees setting C inversion pin 10 . It is
applied that the reference signal (burst flag) shall be inverted into one hundred and eighty degrees at the time of
de-coding.
Superimposed character color do not change at the picture inversion.
C INVERSION PIN 10
LOW 0V HIGH 5V
Burst Non Inversion Inversion
7. Y Inversion
The brightness of the picture shall be inverted by setting Y inversion 19 . It is that Y signal shall be inverted by the
inverter, and then blanking period signal shall be adjusted to the black level with blanking pulse.
Y INVERSION PIN 19
LOW 0V HIGH 5V
Y Output Non inversion Inversion
8. Adjusting pin
(1) BF Level Pin 13
It is the burst flag minor adjusting pin. The burst level shall be adjusted at the open voltage, 0.3V level
adjustment. Therefore, the most recommended on operation with the open condition, as it has been controlled
st 135 at 165 mV (burst level) on specification.
(2) Inversion Set Up Correction Pin 18
It is the minor adjusting pin of Y inversion signal level. The inverting black level shall be adjusted at the open
voltage, 1.8V level adjustment. Therefore, the most recommended on operation with the open condition, as it
has been controlled with 0.59 to 0.77 V (inverting black level) on specification.
C Inversion Form
Figure 4. Y Inversion Output Example
Y Inversion Form
