adsp-21mod870-100 Analog Devices, Inc., adsp-21mod870-100 Datasheet - Page 23

• Manufacturer Part Number: adsp-21mod870-100
• Description: Internet Gateway Processor
• Manufacturer: Analog Devices, Inc.

Parameter
Memory Write
Switching Characteristics:
t
t
t
t
t
t
t
t
t
t
w = wait states
xMS = PMS, DMS, CMS, IOMS, BMS.
REV. 0
DW
DH
WP
WDE
ASW
DDR
CWR
AW
WRA
WWR
t
CK
.
Data Setup before WR High
Data Hold after WR High
WR Pulsewidth
WR Low to Data Enabled
A0–A13, xMS Setup before WR Low
Data Disable before WR or RD Low
CLKOUT High to WR Low
A0–A13, xMS, Setup before WR Deasserted
A0–A13, xMS Hold after WR Deasserted
WR High to RD or WR Low
BMS, CMS,
DMS, PMS,
CLKOUT
A0–A13
IOMS
WR
RD
D
Figure 25. Memory Write
t
CWR
t
ASW
–23–
t
WDE
t
AW
t
WP
Min
0.5 t
0.25 t
0.5 t
0
0.25 t
0.25 t
0.25 t
0.75 t
0.25 t
0.5 t
t
DW
CK
CK
CK
CK
CK
CK
CK
CK
CK
– 7 + w
– 5 + w
– 5
– 2
– 6
– 5
– 9 + w
– 3
– 7
t
WRA
t
DH
t
WWR
t
DDR
ADSP-21mod870
0.25 t
Max
CK
+ 7
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns