參數(shù)資料
型號: ADSP-21MOD870-000
廠商: ANALOG DEVICES INC
元件分類: 調制器/解調器
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): 22/32頁
文件大?。?/td> 231K
代理商: ADSP-21MOD870-000
ADSP-21mod870
TIMING PARAMETERS
–22–
REV. 0
Parameter
Min
Max
Unit
Memory Read
Timing Requirements
:
t
RDD
t
AA
t
RDH
Switching Characteristics
:
t
RP
t
CRD
t
ASR
t
RDA
t
RWR
RD
Low to Data Valid
A0–A13,
xMS
to Data Valid
Data Hold from
RD
High
0.5 t
CK
– 9 + w
0.75 t
CK
– 12.5 + w
ns
ns
ns
0
RD
Pulsewidth
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
0.5 t
CK
– 5 + w
0.25 t
CK
– 5
0.25 t
CK
– 6
0.25 t
CK
– 3
0.5 t
CK
– 5
ns
ns
ns
ns
ns
0.25 t
CK
+ 7
w = wait states
×
t
CK
.
xMS
=
PMS
,
DMS
,
CMS
,
IOMS
,
BMS
.
CLKOUT
A0 – A13
D
t
RDA
t
RWR
t
RP
t
ASR
t
CRD
t
RDD
t
AA
t
RDH
DMS
,
PMS
,
BMS
,
IOMS
,
CMS
RD
WR
Figure 24. Memory Read
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