參數(shù)資料
型號: UPD485505
廠商: NEC Corp.
英文描述: LINE BUFFER 5K-WORD BY 8-BIT
中文描述: 行緩沖區(qū)5K - Word的8位
文件頁數(shù): 13/20頁
文件大?。?/td> 174K
代理商: UPD485505
μ
PD485505
13
Data Sheet M10059EJ7V0DS00
4. Application
4.1 1 H Delay Line
μ
PD485505 easily allows a 1 H (5,048 bits) delay line (see
Figure 4.1
).
Figure 4.1 1 H Delay Line Circuit
WCK
D
IN
WE
RSTW
RCK
D
OUT
RE
RSTR
40 MHz Clock
Reset
Data Output
Data Input
8
8
Figure 4.2 1 H Delay Line Timing Chart
t
WCK
t
RCK
Cycle 0
Cycle 1
Cycle 2
1 H
(5,048 Cycles)
Cycle 5,047
Cycle 0’
Cycle 0
2 H
(5,048 Cycles)
t
WCW
t
RCW
t
WCP
t
RCP
t
RS
t
RH
t
DH
t
DS
(0)
(1)
(2)
(5,046)
(5,047)
(0’)
(1’)
t
DH
t
OH
t
AC
(0)
(1)
(2’)
(3’)
(2)
(3)
WCK/RCK
(Input)
RSTW /
RSTR
(Input)
D
IN
(Input)
D
OUT
(Output)
t
DS
Cycle 1’
Cycle 1
Cycle 2’
Cycle 2
Cycle 3’
Cycle 3
Write
Read
Remark
RE, WE = “L” level
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