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: 2/166页
文件大小: 1015K
代理商: L64007
Arch
2 Wed May 28 17:36:23 1997
Draft 1/21/97
2-2
Architecture
PRE.4 for Rev. D
Copyright 1997 by LSI Logic Corporation. All rights reserved.
2.1
Channel
Decoder
Interface
The L64007 receives input through the Channel Decoder Interface. The
channel decoder interface accepts MPEG-2 system transport packets in
serial or 8-bit parallel format. The channel decoder interface provides
sync byte detection and synchronization, and it implements a sync
lock/unlock hysteresis mechanism. The internal sync lock mechanism
can be bypassed by asserting the sync bit in the Channel Control regis-
ter. An external sync signal is provided (CDSYNC). Once the channel
decoder interface establishes synchronization, it transfers incoming
transport packets to the PID Processor (through the channel FIFO) and
to the Clock Recovery Unit. The channel decoder interface provides
hardware and software error detection, as well as an interrupt signalling
and status ags update upon sync lock or sync unlock.
The channel decoder interface detects an error condition when one of
the following occurs:
High-speed
Clock
Recovery Unit
High-speed
Interface
Channel
Data Input
Channel
Interface
PID
Processor
Video
Channel
Transport
FIFO
DRAM Control
MMU
Host Processor
Interface
External
DRAM Memory
Host
Processor
Audio
Clock
Generator
VCxO Clock
VCxO Control
Audio Clock
Decoder
A/V
AUX Port
Channel
FIFO
Decoder
Output Control Unit
(PPU)
8
Audio
Channel
Transport
FIFO
16
8/16
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