Analog Devices ADSP-2186 Specification Sheet page 20

ADSP-2186
TIMING PARAMETERS
Parameter
Memory Read
Timing Requirements:
t RD Low to Data Valid
RDD
t A0–A13, xMS to Data Valid
AA
t Data Hold from RD High
RDH
Switching Characteristics:
t RD Pulse Width
RP
t CLKOUT High to RD Low
CRD
t A0–A13, xMS Setup before RD Low
ASR
t A0–A13, xMS Hold after RD Deasserted
RDA
t RD High to RD or WR Low
RWR
w = wait states t .
CK
xMS = PMS, DMS, CMS, IOMS, BMS.
CLKOUT
A0 – A13
DMS, PMS,
BMS, IOMS,
CMS
RD
D
WR
Figure 17. Memory Read
Min
0
0.5 t – 5 + w
CK
0.25 t – 5
CK
0.25 t – 6
CK
0.25 t – 3
CK
0.5 t – 5
CK
t
RDA
t
ASR
t
RP
t
CRD
t
RDD
t
AA
–20–
Max
0.5 t – 9 + w
CK
0.75 t – 10.5 + w
CK
0.25 t + 7
CK
t
RWR
t
RDH
Unit
ns
ns
ns
ns
ns
ns
ns
ns
REV. 0