參數(shù)資料
型號: L64007
廠商: LSI CORP
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP160
封裝: PLASTIC, QFP-160
文件頁數(shù): 128/166頁
文件大小: 1015K
代理商: L64007
Arch
56 Wed May 28 17:36:23 1997
Draft 1/21/97
2-56
Architecture
PRE.4 for Rev. D
Copyright 1997 by LSI Logic Corporation. All rights reserved.
Figure 2.50
Using external
DRAM for
extended channel
buffering
When the A/V interface begins operation, it starts to clock out PES video
and PES audio when the respective request line is asserted and there is
data in the Transport Buffers. The audio and video valid lines allow mul-
tiplexing the data from the two FIFOs into a single data port. Only when
the associated valid line is active should the audio or video decoder clock
data in.
Special-purpose logic handles error messages embedded in the PES
data stream. When an error message is detected, it instructs the Output
Control Unit (OCU) to generate an error indication to the external A/V
decoder. This is done using the AVERR signal. Such error messages can
be generated during packet-lost conditions.
Figure 2.51 shows the physical connection between L64007 device and
the L64002 device.
Figure 2.51
L64007 Connection to
L64002 in Serial
Interface Mode
DRAM
Audio
Buffer
Video
Buffer
PID
Processor
MMU
512x8
FIFO
512x8
FIFO
...
PID Index 30
PID Index 31
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