TDA4885 Datasheet, PDF (27/56 Pages) NXP Semiconductors – 150 MHz video controller with I2C-bus

Philips Semiconductors
150 MHz video controller with I²C-bus
Product specification
TDA4885
handbook, full pagewidth
160
OSD signal
amplitude
related to
125
nominal colour
signal amplitude
(%)
100
maximum colour signal amplitude
maximum OSD signal amplitude
nominal colour signal amplitude
(1)
MHA351
(2)
30
00H
(3)
0FH
OSD contrast control data byte
(1) No OSD contrast reduction by limiting.
(2) Partial OSD contrast reduction by limiting.
(3) Full OSD contrast reduction by limiting.
Fig.11 OSD contrast control characteristic with limiting.
handbook, full pagewidth
30
difference of
video black level
and reference
black level
related to
nominal colour
signal amplitude
(%)
0
(1)
(2)
MHA352
−10
00H
10H
20H
30H
3FH
brightness control data byte
(1) Nominal adjustment.
(2) Nominal brightness reference black level.
Fig.12 Brightness control characteristic.
1997 Nov 25
27