參數(shù)資料
型號(hào)： M66271FP
廠商： Mitsubishi Electric Corporation
英文描述： OPERATION PANEL CONTROLLER
中文描述： 操作面板控制器
文件頁(yè)數(shù)： 19/21頁(yè)
文件大小： 289K
代理商： M66271FP
OPERATION PANEL CONTROLLER
M66271FP
MITSUBISHI <DIGITAL ASSP>
(4) Read from VRAM (LWR,HWR = "H" )
Term of non cycle steal access
(3) Write to VRAM ( RD = "H" )
MCS
WAIT
MCS
RD
WAIT
D<7:0>
(D<15:0>)
D<7:0>
(D<15:0>)
LWR
(+HWR)
A<13:0>
(+BHE)
A<13:0>
th(WR-D)
tsu(D-WR)
"H"
tsu(D-MCS)
tsu(A-MCS)
tsu(A-WR)
th(WR-A)
tw(WR)
tw(MCS)
th(MCS-A)
th(MCS-D)
tdis(RD-D)
"H"
ta(MCS-D)
tsu(A-MCS)
tsu(A-RD)
th(RD-A)
th(MCS-A)
tdis(MCS-D)
ta(RD-D)
Term of non cycle steal access
Data input is established
Address is established
Address is established
Data output is established
Note 2: Writing/Reading operation for VRAM during non cycle steal access is performed during overlapping MCS and
[LWR(+HWR) or RD].
Limits of MCS,LWR(+HWR) and RD are prescribed by the input signal of last change to "L" in starting access,
and by the input signal of first change to "H" in ending access.
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