參數(shù)資料
型號(hào): 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): 118/166頁
文件大?。?/td> 1015K
代理商: L64007
Arch
47 Wed May 28 17:36:23 1997
Draft 1/21/97
L64007 MPEG-2, DVB, JSAT Transport Demultiplexer Technical Manual
2-47
PRE.4 for Rev. D
Copyright 1997 by LSI Logic Corporation. All rights reserved.
Figure 2.41
16-Bit Single Write
Bus Cycle
The L64007’s internal operations are on 16-bit boundaries. Thus, the 20-
bit address accesses a 16-bit word. When UDS and LDS are both active,
a 16-bit bus transaction is taking place. When either UDS or LDS are
active, it indicates an 8-bit transaction (active UDS indicates the upper 8
bits; active LDS indicates the lower 8 bits).
Figure 2.42 and Figure 2.43 show typical 8-bit read and write cycles for
the lower byte. Figure 2.44 and Figure 2.45 show typical 8-bit read and
write cycles for the higher byte.
Figure 2.42
Eight-bit Single
Read Bus Cycle for
the Lower Byte
A[19:0]
R/W
AS
CS
D[15:0]
DTACK
Latch Address
End of Write Bus Cycle
End
Start
Write
UDS
LDS
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