ADSP-BF531 Analog Devices, ADSP-BF531 Datasheet - Page 24

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

ADSP-BF531/ADSP-BF532/ADSP-BF533
Asynchronous Memory Write Cycle Timing
Table 17. 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
END AT
SETUP
t
DO
t
DO
BE, ADDRESS
WRITE DATA
t
SARDY
PROGRAMMED WRITE
ACCESS 2 CYCLES
1
Figure 12. Asynchronous Memory Write Cycle Timing
1
Rev. 0 | Page 24 of 56 | March 2004
t
SARDY
EXTENDED
1 CYCLE
ACCESS
t
HO
t
HARDY
1 CYCLE
HOLD
t
HO
t
DD AT
Min
4.0
0.0
1.0
0.8
Max
6.0
6.0
Unit
ns
ns
ns
ns
ns
ns