參數(shù)資料
型號(hào): ADSP-21mod970
廠商: Analog Devices, Inc.
英文描述: Multi-Port Internet Gateway Processor(多口網(wǎng)關(guān)處理器)
中文描述: 多端口Internet網(wǎng)關(guān)處理器(多口網(wǎng)關(guān)處理器)
文件頁(yè)數(shù): 37/50頁(yè)
文件大小: 980K
代理商: ADSP-21MOD970
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ADSP-21mod970 Preliminary Data Sheet
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Data
Technca
TIMING PARAMETERS ADSP-21mod970
Memory Read
w = wait states x t
CK
xMS = PMS, DMS, CMS, IOMS, BMS
Figure 21 Memory Read
Parameter
Memory Read
Timing Requirements:
t
RDD
t
AA
t
RDH
Min
Max
Unit
RD Low to Data Valid
A0-A13, xMS to Data Valid
Data Hold from RD High
Switching Characteristics:
t
RP
t
CRD
t
ASR
t
RDA
t
RWR
RD Pulse Width
CLKOUT High to RD Low
A0-A13, xMS Setup before RD Low
A0-A13, xMS Hold after RD Deasserted
RD High to RD or WR Low
0.5t
CK
– 9 + w
0.75t
CK
- 12.5 +
w
0
0.5t
CK
- 5 + w
0.25t
CK
- 5
0.25t
CK
- 6
0.25t
CK
– 3
0.5t
CK
- 5
0.25t
CK
+ 7
ns
ns
ns
ns
ns
ns
ns
ns
CLKOUT
A0 - A13
D
RDA
t
RWR
RP
ASR
CRD
RDD
t
AA
t
RDH
RD
WR
DMS, PMS,
BMS, IOMS, CMS
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