ADSP-2111KG-66 Analog Devices, ADSP-2111KG-66 Datasheet - Page 34

• Manufacturer Part Number: ADSP-2111KG-66
• Description: ADSP-2100 Family DSP Microcomputers
• Manufacturer: Analog Devices

ADSP-21xx
TIMING PARAMETERS (ADSP-2101/2105/2111/2115/2161/2163)
MEMORY WRITE
Parameter
Switching Characteristic:
t
t
t
t
t
t
t
t
t
t
Parameter
Switching Characteristic:
t
t
t
t
t
t
t
t
t
t
NOTES
1
w = wait states
DW
DH
WP
WDE
ASW
DDR
CWR
AW
WRA
WWR
For 25 MHz only the minimum frequency dependency formula for t
DW
DH
WP
WDE
ASW
DDR
CWR
AW
WRA
WWR
Data Setup before WR High
Data Hold after WR High
WR Pulse Width
WR Low to Data Enabled
A0–A13, DMS, PMS Setup before WR Low
Data Disable before WR or RD Low
CLKOUT High to WR Low
A0–A13, DMS, PMS, Setup before WR
Deasserted
A0–A13, DMS, PMS Hold after WR
Deasserted
WR High to RD or WR Low
Data Setup before WR High
Data Hold after WR High
WR Pulse Width
WR Low to Data Enabled
A0–A13, DMS, PMS Setup before
WR Low
Data Disable before WR or RD Low
CLKOUT High to WR Low
A0–A13, DMS, PMS, Setup before WR
Deasserted
A0–A13, DMS, PMS Hold after WR
Deasserted
WR High to RD or WR Low
t
CK
.
DMS, PMS
CLKOUT
A0 – A13
WR
RD
D
Figure 33. Memory Write
13 MHz
Min Max Min Max
25.5
9.2
30.5
0
9.2
9.2
14.2 29.2 13.1 28.1
35.7
10.2
33.5
t
ASW
CWR
and t
t
AS W
DDR
–34–
= (0.25t
13.824 MHz 16.67 MHz
23.2
8.1
28.2
0
8.1
8.1
32.2
9.1
31.2
t
WDE
t
AW
Frequency Dependency
(CLKIN 25 MHz)
Min
0.5t
0.25t
0.5t
0
0.25t
0.25t
0.25t
0.75t
0.25t
0.5t
CK
t
WP
– 8.5).
CK
CK
CK
CK
CK
CK
CK
CK
CK
t
DW
– 13 + w
– 8 + w
– 5
– 10
– 10
– 5
– 22 + w
– 9
– 10
Min
17
5
22
0
5
5
10
23
6
25
1
1
t
WR A
t
DH
Max
25
t
WWR
Max
0.25t
20 MHz
Min Max
12
2.5
17
0
2.5
2.5
7.5
15.5
3.5
20
t
DD R
CK
+ 10
22.5
25 MHz
Min Max Unit
7
0
12
0
1.5
1.5
5
8
1
15
1
1
20
REV. B
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns