參數(shù)資料
型號(hào)： PNX2000HL
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 消費(fèi)家電
英文描述： Audio video input processor
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP144
封裝： 20 X 20 MM, 1.40 MM HEIGHT, PLASTIC, SOT-486-1, MS-026, LQFP-144
文件頁(yè)數(shù)： 13/31頁(yè)
文件大?。?/td> 244K
代理商： PNX2000HL
9397 750 13928
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data
Rev. 03 – 23 August 2004
13 of 31
Philips Semiconductors
PNX2000
Audio video input processor
7.2 Interfaces
7.3 Features in detail
7.3.1
Video
Automatic Gain Control (AGC) to correct amplitude errors at input source.
Synchronization identification (used for channel search).
Sync processing for 1f
H
and 2f
H
video input source.
Standard detection of PAL, NTSC or SECAM and various 1f
H
and 2f
H
component
video input sources.
1f
H
video
Color decoding (ITU-601) for PAL, NTSC or SECAM input sources.
2D comb filtering.
Support for component video sources with sync on CVBS or green.
Fastblank insertion of RGB signals onto CVBS input.
2f
H
video
Support for various progressive and interlaced component video sources.
Synchronization of video sources with sync on Y or external H/V inputs.
VBI data capture
TV sound decoder
DEMDEC
DSP
AUDIO DSP
DCU
Demodulation, decoding of terrestrial TV audio standards
.
Processing analog and digital audio sources.
Acquires VBI data (Teletext; CC; VPS) and formats in a
stream.
Formats YUV, VBI data and CVBS data in ITU-656.
Bus arbitration among all the internal blocks.
Audio processor
Data Capture Unit
Formatter unit
Bus Control Unit
ITU-656
BCU
Table 17:
Function
Block function
…continued
Block
Description
Table 18:
Interface
I
2
C-bus
Interfaces
Description
The PNX2000 IC is controlled using an I
2
C-bus. It performs like an I
2
C-bus to PI-bus
bridge, i.e. translates I
2
C-bus slave received commands to PI-bus master commands.
Receives data in three streams from PNX3000.
Serial digital audio interface (6 stereo inputs, 6 stereo outputs) for connection to other
devices that support the I
2
S-bus standard. Can be used to receive decoded sound
from a multi-channel digital audio decoder, provide additional ADCs and DACs, or loop
audio signals through an external processor or delay line.
Mainly intended to transfer output data stream externally to the PNX8550, but the
output data stream could also be readable by other ITU-656 input devices that
implement data valid signalling.
Digital-analog converters used to generate analog outputs from Sound Core.
I
2
D
I
2
S-bus
ITU-656
DACS
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