ADSP-BF531/ADSP-BF532
Asynchronous Memory Write Cycle Timing
Table 17. Asynchronous Memory Write Cycle Timing
VDDEXT = 1.8 V VDDEXT = 2.5 V/3.3 V
Parameter
Min Max Min
Max
Unit
Timing Requirements
tSARDY
tHARDY
ARDY Setup Before CLKOUT
ARDY Hold After CLKOUT
4.0
1.0
4.0
0.0
ns
ns
Switching Characteristics
tDDAT
tENDAT
tDO
DATA15–0 Disable After CLKOUT
6.0
6.0
6.0
6.0
ns
ns
ns
ns
DATA15–0 Enable After CLKOUT
Output Delay After CLKOUT1
Output Hold After CLKOUT 1
1.0
1.0
1.0
0.8
tHO
1 Output pins include AMS3–0, ABE1–0, ADDR19–1, DATA15–0, AOE, AWE.
ACCESS
EXTENDED
1 CYCLE
SETUP
2 CYCLES
HOLD
1 CYCLE
PROGRAMMED WRITE
ACCESS 2 CYCLES
CLKOUT
AMSx
tDO
tHO
ABE1–0
ABE, ADDRESS
ADDR19–1
tDO
tHO
AWE
tHARDY
tSARDY
ARDY
tSARDY
tENDAT
tDDAT
DATA15–0
WRITE DATA
Figure 12. Asynchronous Memory Write Cycle Timing
Rev. D
|
Page 26 of 60
|
August 2006
ADI [ ADI ]
