参数资料
型号: L64007
厂商: LSI CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP160
封装: PLASTIC, QFP-160
文件页数: 101/166页
文件大小: 1015K
代理商: L64007
Draft 1/16/97
1-4
Introduction
PRE.4 for Rev. D
Copyright 1997 by LSI Logic Corporation. All rights reserved.
ues in the transport packets and the Local Master Counter (LMC) deter-
mines the correction value that is programmed to the Sigma Delta
Register. Subsequently, the train of pulses changes its duty cycle so the
produced voltage moves the VCxO frequency to the correct position.
Figure 1.2 shows a typical implementation of the L64007 in a satellite
system. The L64007 is in use with these LSI Logic products: the L64704
Single-Chip DBS Receiver and the L64002 MPEG-2 Audio/Video
Decoder. The L64007 provides the transport layer demultiplexing ser-
vices; the L64002 provides the audio and video decoding functions. The
L64002 transfers reconstructed video data to the NTSC/PAL encoder
device and reconstructed audio data to the PCM stereo DAC.
Figure 1.2
Typical Satellite
Set-Top Box Block
Diagram
Satellite
Dish In
NTSC/PAL
S-Video
L-Speaker
R-Speaker
CPU
L64704
L64007
RF Tuner
PCM
256 K x 16
L64002
256 K x 64
DRAM
NTSC/PAL
27 MHz
Audio/Video PES
CCIR601 Video
PCM Audio
Encoder
Audio DAC
256 K x 32
High-speed
Optional
Port
8
16
8
3
VCXO
16
System Bus
1/8
8
8/16
64/32
8
Audio Oversampling Clock
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