ADSP-BF537 AD [Analog Devices], ADSP-BF537 Datasheet - Page 29

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

Asynchronous Memory Write Cycle Timing
Table 19. Asynchronous Memory Write Cycle Timing
1
Parameter
Timing Requirements
t
t
Switching Characteristics
t
t
t
t
Output pins include AMS3–0, ABE1–0, ADDR19–1, DATA15–0, AOE, AWE.
SARDY
HARDY
DDAT
ENDAT
DO
HO
ADDR19–1
DATA15–0
CLKOUT
ABE1–0
AMSx
ARDY
AWE
ARDY Setup Before CLKOUT
ARDY Hold After CLKOUT
DATA15–0 Disable After CLKOUT
DATA15–0 Enable After CLKOUT
Output Delay After CLKOUT
Output Hold After CLKOUT
2 CYCLES
t
ENDAT
SETUP
t
DO
t
t
DO
SARDY
BE, ADDRESS
WRITE DATA
PROGRAMMED WRITE
ACCESS 2 CYCLES
1
Figure 11. Asynchronous Memory Write Cycle Timing
1
Rev. B | Page 29 of 68 | July 2006
t
SARDY
EXTENDED
ACCESS
1 CYCLE
t
t
HO
HARDY
1 CYCLE
HOLD
ADSP-BF534/ADSP-BF536/ADSP-BF537
t
HO
t
DDAT
Min
4.0
0.0
1.0
0.8
Max
6.0
6.0
Unit
ns
ns
ns
ns
ns
ns