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Philips Semiconductors
8. Television application
Figure 3
using the PNX3000 and PNX2000 as an analog front-end and the PNX8550 as the main
processor. This system is aimed at the hybrid (analog or digital) TV market.
The main SOC in the system, PNX8550, performs key features for high quality television
like video quality enhancement, motion compensation and picture-in-picture processing.
PNX2000 together with PNX3000 are used to perform the input decoding of a single
stream of analog audio and a single stream of analog video (1f
PNX2000 performs the following main functions:
The audio data is transferred between PNX2000 and PNX8550 using I
and PNX3000 are controlled from PNX8550 via the I
SIF
TUNERS
UV1316
VIF
UV13361
SCART
21
20
19
21
CVBS Y/C
18
20
17
19
RGB 2
16
18
15
17
14
16
13
15
L/R audio 2
12
14
11
13
10
12
11
8
10
CVBS 1
9
6
8
7
4
6
L/R audio 1
5
2
4
3
2
1
status
LEVEL ADJUSTMENT
REMOTE CONTROL
LOCAL KEYPAD
Fig 3. TV application
9397 750 13928
Product data
•
Serial data link interfacing for analog multi-purpose interface PNX3000.
shows an overview of the top level hardware architecture of a TV application,
•
Color decoding into ITU-601 compatible format (1f
•
A digital interface to external 3D comb filter.
•
VBI data capture (Teletext, WSS, CC).
•
ITU-656 formatting for communication to PNX8550.
•
Audio demodulation and decoding.
•
Audio processing and D-A conversion.
2
I
D
PNX2000
L/R
audio
PNX3000
STANDBY
MICRO-
CONTROLLER
Rev. 03 – 23 August 2004
CVBS
RGB
10 bits (3 )
YUV (656)
2
audio I
S-bus
2
audio I
S-bus
PNX8550
(2 )
2
audio I
S-bus
(3 )
32-bit
8-bit or 16-bit
PNX2000
Audio video input processor
or 2f
) broadcast signals.
H
H
or 2f
).
H
H
2
S-bus. PNX2000
2
C-bus.
RGB
AMPLIFIER
DISPLAY
PROCESSOR
DEFL.
CONT.
DDR
16 Mb
FLASH
ROM
18 Mb
AUDIO
AMPLIFIER
mce558
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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