ADSP-BF531 Analog Devices, ADSP-BF531 Datasheet - Page 23

• Manufacturer Part Number: ADSP-BF531
• Description: Blackfin Embedded Processor
• Manufacturer: Analog Devices

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, ABE1–0, ADDR19–1, AOE, ARE.
SDAT
HDAT
SARDY
HARDY
DO
HO
CLKOUT
ADDR19–1
AMSx
ABE1–0
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 11. Asynchronous Memory Read Cycle Timing
PROGRAMMED READ ACCESS
t
DO
Rev. 0 | Page 23 of 56 | March 2004
4 CYCLES
t
SARDY
BE, ADDRESS
ADSP-BF531/ADSP-BF532/ADSP-BF533
t
HARDY
ACCESS EXTENDED
3 CYCLES
t
SARDY
t
Min
2.1
0.8
4.0
0.0
0.8
t
HO
SDAT
READ
t
HARDY
1 CYCLE
HOLD
t
Max
6.0
HDAT
t
HO
Unit
ns
ns
ns
ns
ns
ns