參數(shù)資料
型號: ADSP-21MOD870-000
廠商: ANALOG DEVICES INC
元件分類: 調(diào)制器/解調(diào)器
英文描述: Internet Gateway Processor
中文描述: 56 kbps DATA, MODEM, PQFP100
封裝: METRIC, PLASTIC, TQFP-100
文件頁數(shù): 28/32頁
文件大?。?/td> 231K
代理商: ADSP-21MOD870-000
ADSP-21mod870
–28–
REV. 0
Parameter
Min
Max
Unit
IDMA Read, Short Read Cycle
Timing Requirements
:
t
IKR
t
IRP
Switching Characteristics
:
t
IKHR
t
IKDH
t
IKDD
t
IRDE
t
IRDV
IACK
Low before Start of Read
1
Duration of Read
0
15
ns
ns
IACK
High after Start of Read
1
IAD15–0 Data Hold after End of Read
2
IAD15–0 Data Disabled after End of Read
2
IAD15–0 Previous Data Enabled after Start of Read
IAD15–0 Previous Data Valid after Start of Read
4
0
15
ns
ns
ns
ns
ns
10
0
10
NOTES
1
Start of Read =
IS
Low and
IRD
Low.
2
End of Read =
IS
High or
IRD
High.
t
IRP
t
IKR
PREVIOUS
DATA
t
IKHR
t
IRDV
t
IKDD
t
IRDE
t
IKDH
IAD15–0
IACK
IS
IRD
Figure 30. IDMA Read, Short Read Cycle
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