TDA4780 Datasheet, PDF (11/44 Pages) NXP Semiconductors – RGB video processor with automatic cut-off control and gamma adjust

Philips Semiconductors
RGB video processor with automatic
cut-off control and gamma adjust
Preliminary specification
TDA4780
Table 4 Signal input selection and effect on adaptive black measurements by fast source switches and I²C-bus;
note 1
I²C-BUS CONTROLLED BITS
ANALOG SWITCH
SELECTED SIGNALS
FSON2 FSDIS2 FSON1 FSDIS1
FSW2
(pin 1)
FSW1
(pin 13)
RGB₂
(pins 2, 3
and 4)
ADBL
RGB₁ (pins 10,
11 and 12)
TV (pins 6,
7 and 8)
L
L
L
L
L
L
active
ON
L
H
active ON
H
X
ON
inactive
L
L
L
H
L
X
active
ON
H
X
ON
inactive
L
L
H
X
L
X
active ON
H
X
ON
inactive
L
H
L
L
X
L
active
ON
X
H
active ON
L
H
L
H
X
X
active
ON
L
H
H
X
X
X
active ON
H
L
X
X
L
X
ON
active
H
ON
inactive
H
H
X
X
X
X
ON
active
Note
1. Explanation for the cell contents of the table:
a) H = set to logic 1 or analog switch (pins 1 and 13) to >0.9 V.
b) L = set to logic 0 or analog switch (pins 1 and 13) to <0.4 V.
c) X = don’t care.
d) ON = this signal is selected.
1997 Feb 06
11