ADSP-BF537 AD [Analog Devices], ADSP-BF537 Datasheet - Page 28

• Manufacturer Part Number: ADSP-BF537
• Description: Blackfin Embedded Processor
• Manufacturer: AD [Analog Devices]

ADSP-BF534/ADSP-BF536/ADSP-BF537
Asynchronous Memory Read Cycle Timing
Table 18. Asynchronous Memory Read Cycle Timing
1
Parameter
Timing Requirements
t
t
t
t
Switching Characteristics
t
t
Output pins include AMS3–0, ABE1–0, ADDR19–1, AOE, ARE.
SDAT
HDAT
SARDY
HARDY
DO
HO
CLKOUT
AMSx
ABE1–0
ADDR19–1
ARE
ARDY
AOE
DATA15–0
DATA15–0 Setup Before CLKOUT
DATA15–0 Hold After CLKOUT
ARDY Setup Before CLKOUT
ARDY Hold After CLKOUT
Output Delay After CLKOUT
Output Hold After CLKOUT
2 CYCLES
SETUP
t
DO
1
1
Figure 10. Asynchronous Memory Read Cycle Timing
PROGRAMMED READ ACCESS
t
DO
Rev. B | Page 28 of 68 | July 2006
t
SARDY
4 CYCLES
BE, ADDRESS
t
HARDY
ACCESS EXTENDED
t
SARDY
3 CYCLES
t
Min
2.1
0.8
4.0
0.0
0.8
t
HO
SDAT
t
READ
HARDY
1 CYCLE
HOLD
t
Max
6.0
HDAT
t
HO
Unit
ns
ns
ns
ns
ns
ns