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: 35/166页
文件大小: 1015K
代理商: L64007
Arch
5 Wed May 28 17:36:23 1997
Draft 1/21/97
L64007 MPEG-2, DVB, JSAT Transport Demultiplexer Technical Manual
2-5
PRE.4 for Rev. D
Copyright 1997 by LSI Logic Corporation. All rights reserved.
The rst counter, IN_SYNC, counts the number of times the 0x47 byte
has been detected within 188 bytes. If this count reaches the program-
mable value, the SYNC_ON status bit is set to 1. This indicates that the
transport device locked the transport stream. The lock remains until
SYNC_OFF is set to 1. SYNC_OFF is the reverse of SYNC_ON.
OUT_SYNC counts the times the 0x47 byte was not detected when the
L64007 expected it to appear (see Figure 2.4). Note that the SYNC_OFF
process is turned on only after synchronization has been achieved. If the
OUT_SYNC reaches the programmable value, the SYNC_ON bit is
reset, and the SYNC_OFF bit is set to 1. The process of acquiring syn-
chronization then starts again. When the L64007 is not in sync state, no
data is posted.
Figure 2.4
Losing the Sync
Process
Channel
Start
IN_SYNC
SYNC_ON
SYNC_OFF
bit stream
1
2
3
0
47
188 bytes
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