參數(shù)資料
型號(hào): ADSP-2186NKCA-320
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號(hào)處理
英文描述: DSP Microcomputer
中文描述: 24-BIT, 40 MHz, OTHER DSP, PBGA144
封裝: MO-205AC, BGA-144
文件頁(yè)數(shù): 30/48頁(yè)
文件大?。?/td> 1571K
代理商: ADSP-2186NKCA-320
ADSP-218xN Series
–30–
REV. 0
Memory Read
Table 18. Memory Read
Parameter
Timing Requirements:
t
RDD
t
AA
t
RDH
Switching Characteristics:
t
RP
t
CRD
t
ASR
t
RDA
t
RWR
Min
Max
Unit
RD Low to Data Valid
1
A13–0, xMS to Data Valid
2
Data Hold from RD High
1
w = wait states x t
CK
.
2
xMS = PMS, DMS, CMS, IOMS, BMS.
0.5t
CK
– 5 + w
0.75t
CK
– 6 + w
ns
ns
ns
0
RD pulsewidth
CLKOUT High to RD Low
A13–0, xMS Setup before RD Low
A13–0, xMS Hold after RD Deasserted
RD High to RD or WR Low
0.5t
CK
– 3 + w
0.25t
CK
– 2
0.25t
CK
– 3
0.25t
CK
– 3
0.5t
CK
– 3
ns
ns
ns
ns
ns
0.25t
CK
+ 4
Figure 27. Memory Read
CLKOUT
A0–A13
D0–D23
t
RDA
t
RWR
t
RP
t
ASR
t
CRD
t
RDD
t
AA
t
RDH
DMS
,
PMS
,
BMS
,
IOMS
,
CMS
RD
WR
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