adsp2185 Analog Devices, Inc., adsp2185 Datasheet - Page 20

• Manufacturer Part Number: adsp2185
• Description: Dsp Microcomputer
• Manufacturer: Analog Devices, Inc.

ADSP-2185
Parameter
Memory Read
Timing Requirements:
t
t
t
Switching Characteristics:
t
t
t
t
t
w = wait states
xMS = PMS, DMS, CMS, IOMS, BMS
RDD
AA
RDH
RP
CRD
ASR
RDA
RWR
t
CK
RD Low to Data Valid
A0-A13, xMS to Data Valid
Data Hold from RD High
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
BMS, IOMS,
DMS, PMS,
CLKOUT
A0–A13
CMS
WR
RD
D
Figure 17. Memory Read
t
CRD
t
ASR
t
AA
–20–
t
RDD
t
RP
Min
0
0.5 t
0.25 t
0.25 t
0.25 t
0.5 t
CK
CK
CK
CK
CK
– 5 + w
– 5
– 5
– 6
– 3
t
RDA
t
RDH
t
RWR
Max
0.5 t
0.75 t
0.25 t
CK
CK
CK
– 9 + w
– 10.5 + w
+ 7
Unit
ns
ns
ns
ns
ns
ns
ns
ns
REV. 0