ADSP-2171 Analog Devices, ADSP-2171 Datasheet - Page 22

• Manufacturer Part Number: ADSP-2171
• Description: ADSP-2100 Family DSP Microcomputers
• Manufacturer: Analog Devices

ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2171/ADSP-2172
Parameter
Memory Read
Timing Requirement:
t
t
t
Switching Characteristic:
t
t
t
t
t
w = wait states x t
RDD
AA
RDH
RP
CRD
ASR
RDA
RWR
CK
.
RD Low to Data Valid
A0–A13, PMS, DMS, BMS to Data Valid
Data Hold from RD High
RD Pulse Width
CLKOUT High to RD Low
A0–A13, PMS, DMS, BMS Setup before RD Low
A0–A13, PMS, DMS, BMS Hold after RD Deasserted
RD High to RD or WR Low
DMS, PMS
CLKOUT
A0–A13
BMS
RD
WR
D
Figure 11. Memory Read
t
t
CRD
ASR
t
AA
–22–
t
RDD
t
RP
Min
0
0.5t
0.25t
0.25t
0.25t
0.5t
CK
CK
CK
CK
CK
– 5
– 5 + w
– 5
– 6
– 3
t
RDA
t
RDH
t
RWR
Max
0.5t
0.75t
0.25t
CK
CK
CK
– 9 + w
– 10.5 + w
+ 7
REV. A
Unit
ns
ns
ns
ns
ns
ns
ns
ns