PNX2000 Datasheet, PDF (16/31 Pages) NXP Semiconductors – Audio video input processor

Philips Semiconductors
PNX2000
Audio video input processor
• Serial data link interfacing for analog multi-purpose interface PNX3000.
8. Television application
Figure 3 shows an overview of the top level hardware architecture of a TV application,
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_H or 2f_H) broadcast signals.
PNX2000 performs the following main functions:
• Color decoding into ITU-601 compatible format (1f_H or 2f_H).
• 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.
The audio data is transferred between PNX2000 and PNX8550 using I²S-bus. PNX2000
and PNX3000 are controlled from PNX8550 via the I²C-bus.
SIF
TUNERS
UV1316 _VIF
SCART ^UV13361
21
20
19 21
18 20
17 19
16 18
15 17
14 16
13 15
12 14
11 13
10 12
11
8 10
9
68
7
46
5
24
3
2
1
CVBS Y/C
RGB 2
L/R audio 2
CVBS 1
L/R audio 1
status
PNX3000
CVBS
YUV (656)
I²D
audio I²S-bus
PNX2000 ^{audio I2S-bus} PNX8550
L/R
(2×)
audio
audio I²S-bus
(3×)
RGB
10 bits (3×)
DISPLAY
PROCESSOR
32-bit _DDR
16 Mb
8-bit or 16-bit ^FLASH
ROM
18 Mb
LEVEL ADJUSTMENT
REMOTE CONTROL
LOCAL KEYPAD
STANDBY
MICRO-
CONTROLLER
Fig 3. TV application
RGB
AMPLIFIER
DEFL.
CONT.
AUDIO
AMPLIFIER
mce558
9397 750 13928
Product data
Rev. 03 – 23 August 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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