adsp-bf561wbbz-5a Analog Devices, Inc., adsp-bf561wbbz-5a Datasheet - Page 24

• Manufacturer Part Number: adsp-bf561wbbz-5a
• Description: Blackfin Embedded Symmetric Multi-processor
• Manufacturer: Analog Devices, Inc.

ADSP-BF561
Asynchronous Memory Read Cycle Timing
Table 16. Asynchronous Memory Read Cycle Timing
1
Parameter
Timing Requirements
t
t
t
t
Switching Characteristics
t
t
Output pins include AMS3–0, ABE3–0, ADDR25–2, AOE, ARE.
SDAT
HDAT
SARDY
HARDY
DO
HO
CLKOUT
ADDR19–1
AMSx
ABE1–0
AOE
ARE
ARDY
DATA15–0
DATA31–0 Setup Before CLKOUT
DATA31–0 Hold After CLKOUT
ARDY Setup Before CLKOUT
ARDY Hold After CLKOUT
Output Delay After CLKOUT
Output Hold After CLKOUT
2 CYCLES
SETUP
t
DO
Figure 9. Asynchronous Memory Read Cycle Timing
1
PROGRAMMED READ ACCESS
1
t
DO
Rev. C | Page 24 of 64 | December 2007
4 CYCLES
t
SARDY
ABE, ADDRESS
t
HARDY
ACCESS EXTENDED
3 CYCLES
t
SARDY
Min
2.1
0.8
4.0
0.0
0.8
t
t
HO
SDAT
READ
t
HARDY
1 CYCLE
HOLD
Max
6.0
t
HDAT
t
HO
Unit
ns
ns
ns
ns
ns
ns