參數(shù)資料
型號: ADSP-21020
廠商: Analog Devices, Inc.
元件分類: 數(shù)字信號處理
英文描述: 32/40-Bit IEEE Floating-Point DSP Microprocessor(浮點型DSP處理器)
中文描述: 32/40 IEEE浮點DSP微處理器(浮點型DSP的處理器)
文件頁數(shù): 18/32頁
文件大?。?/td> 424K
代理商: ADSP-21020
ADSP-21020
REV. C
–18–
Memory Read
K/B/T Grade
K/B/T Grade
B/T Grade
K Grade
20 MHz
Min
25 MHz
Min
30 MHz
Min Max Min Max Min
33.3 MHz Frequency Dependence*
Parameter
Max
Max
Max
Unit
Timing Requirement:
t
DAD
Address, Select to Data Valid
t
DRLD
xRD
Low to Data Valid
t
HDA
Data Hold from Address, Select
t
HDRH
Data Hold from
xRD
High
t
DAAK
xACK Delay from Address
t
DRAK
xACK Delay from
xRD
Low
t
SAK
xACK Setup before CLKIN High
t
HAK
xACK Hold after CLKIN High
37
24
27
18
20
13
17
11
37 + DT
24 + 5DT/8
ns
ns
ns
ns
ns
ns
ns
ns
0
–1
0
–1
0
–1
0
–1
27
15
18
10
12
6
9
5
27 + 7DT/8
15 + DT/2
14
0
12
0
10
0
9
0
14 + DT/4
Switching Characteristic:
t
DARL
Address, Select to
xRD
Low
t
DAP
xPAGE Delay from Address, Select
t
DCKRL
CLKIN High to
xRD
Low
t
RW
xRD
Pulse Width
t
RWR
xRD
High to
xRD
,
xWD
Low
8
4
2
0
8 + 3DT/8
ns
ns
ns
ns
ns
1
26
1
24
1
22
1
21
16
26
17
13
20
13
12
15
11
11
13
9
16 + DT/4 26 + DT/4
26 + 5DT/8
17 + 3DT/8
NOTES
*DT = t
CK
– 50 ns
x = PM or DM; Address = PMA23-0, DMA31-0; Data = PMD47-0, DMD39-0; Select =
PMS1-0
,
DMS3-0
.
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