Philips Q528.1E - Back-End; Back-End Key Component Overview; Block Diagram Display Control HD-Sets 50; 100 Hz; HD Sets @ 50; 100 Hz

Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 135Q528.1E LA 9.
The Conditional Access Interface supports direct control and
communication to the PC-Card attached to a PCMCIA
interface. The interface supports the DVB CI-CA and
CableCard specification.
9.7 Back-end
Refer to figures “Architecture of TV520 platform” earlier in this
chapter for details. Refer also to block diagrams B04, B05 and
B06.
Table 9-1 Back-End key component overview
9.7.1 HD sets @ 50 / 100 Hz
In HD sets (50 / 100 Hz), the output signal coming from the
PNX8535 is fed to the PNX5050 and then to the PACIFIC 3; the
PACIFIC 3 also drives the AmbiLight units. The PACIFIC 3 also
generates the pulse-width modulated signal needed for the
“Dimming Backlight” feature, which ensures additional motion
sharpness. As some displays require an analogue signal to
switch the LCD, a multiplexer is added to transform the puls-
width modulated signal. An additional signal, coming from the
PNX8535, makes the selection between analogue and pulse-
width modulation, depending on which display is used.
Scanning Backlight displays require an analogue signal, and all
other displays a pulse-width modulated.
Refer to figure “Block diagram display control HD-sets 50 / 100
Hz”.
Figure 9-13 Block diagram display control HD-sets 50 / 100 Hz
Region/
specification Processing
Picture
enhancement DFI panel
EU
HD @ 50 Hz
HD @ 100 Hz
fHD @ 50 Hz
fHD @ 100 Hz
PNX5050 Pacific no
yes
H_16770_129.eps
270307
PNX5050
LVDS 41p - FI-R41S-HF
1M591D42
Pacific 3
SPI -flash
M25 P 05 -AVM N 6 P
9322 206 45668
PNX8535
M2
AmbiLight
Scanning
Backlight
1S01
Display
Supply
PW M (Anal og )
Dimming
MUX
+
Level
shift
LVDS FI-WE31P-HF
Debugging only !!
Select -AnaPW M Di mmi ng
Converter
+
MUX
PWM
Dimming
2x DDR
PWM-Ambi
P87LPC764
BDH
MIPS StdBy
PWM Boost
Converter
Analog Boost
YUV
10b
RGB
10b
LVDS
10b
LVDS
10b
PNX5050
LVDS 41p - FI-R41S-HF
1M591D42
LVDS
HD
HD DF
Pacific 3
SPI -flash
M25 P 05 -AVM N 6 P
9322 206 45668
PNX8535
M2
AmbiLight
Scanning
Backlight
1S01
Display
Supply
PW M (Analog )
Dimming
MUX
+
Level
shift
LVDS FI-WE31P-HF
Debugging only !!
Select -AnaPW M Di mmi ng
Converter
+
MUX
PWM
Dimming
2x DDR
PWM-Ambi
P87LPC764
BDH
MIPS StdBy
PWM Boost
Converter
Analog Boost
YUV
10b
RGB
10b
LVDS
10b
LVDS
10b