ADSP-2183 Datasheet, PDF (16/31 Pages) Analog Devices – DSP Microcomputer

ADSP-2183
Parameter
Memory Read
Timing Requirements:
t_RDD
RD Low to Data Valid
t_AA
A0–A13, xMS to Data Valid
t_RDH
Data Hold from RD High
Switching Characteristics:
t_RP
RD Pulsewidth
t_CRD
CLKOUT High to RD Low
t_ASR
A0–A13, xMS Setup before RD Low
t_RDA
A0–A13, xMS Hold after RD Deasserted
t_RWR
RD High to RD or WR Low
w = wait states × t_CK.
xMS = PMS, DMS, CMS, IOMS, BMS.
Min
0
0.5t_CK – 5 + w
0.25t_CK – 2
0.25t_CK – 4
0.25t_CK – 3
0.5t_CK – 5
Max
Unit
0.5t_CK – 8 + w
ns
0.75t_CK – 10.5 + w ns
ns
ns
0.25t_CK + 7
ns
ns
ns
ns
CLKOUT
A0 – A13
DMS, PMS,
BMS, IOMS,
CMS
RD
D
WR
t_ASR
t_CRD
t_RP
t_RDD
t_AA
t_RDA
t_RWR
t_RDH
Figure 11. Memory Read
–16–
REV. C