ADSP-BF535
Asynchronous Memory Write Cycle Timing
Table 14 and Figure 11 describe Asynchronous Memory Write
Cycle timing.
Table 14. Asynchronous Memory Write Cycle Timing
Parameter |
|
Min |
Max |
Unit |
|
|
|
|
|
Timing Requirements |
|
|
|
|
tSARDY |
ARDY Setup Before CLKOUT |
4.0 |
|
ns |
tHARDY |
ARDY Hold After CLKOUT |
–1.0 |
|
ns |
Switching Characteristics |
|
|
|
|
tDDAT |
DATA31–0 Disable After CLKOUT |
|
6.0 |
ns |
tENDAT |
DATA31–0 Enable After CLKOUT |
1.0 |
|
ns |
tDO |
Output Delay After CLKOUT1 |
|
7.0 |
ns |
tHO |
Output Hold After CLKOUT1 |
0.8 |
|
ns |
1 Output pins include AMS3–0, ABE3–0, ADDR25–2, DATA31–0, AOE, AWE.
|
|
|
SETUP |
PROGRAMMED WRITE |
ACCESS |
HOLD |
|||||||||||
|
|
|
EXTENDED |
||||||||||||||
|
|
|
2 CYCLES |
|
ACCESS 2 CYCLES |
|
1 CYCLE |
1 CYCLE |
|||||||||
CLKOUT |
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
tDO |
|
|
|
|
|
|
|
|
|
|
|
tHO |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
AMSx |
|
|
|
|
|
|
|
|
|
|
|
|
|||||
ABE3–0 |
|
|
|
|
|
BE, ADDRESS |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
ADDR25–2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
tDO |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
AWE |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
tHO |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ARDY |
|
|
|
|
|
|
tSARDY |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
tHARDY |
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
|
|
|
|
|
tENDAT |
|
|
|
|
tSARDY |
|
|
|
|
|
|
|
|
|
tDDAT |
|||||||||||||||||||
|
|
|
|
|
|
||||||||||||||||||||||||||||||||||
DATA31–0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||||
|
|
|
|
|
WRITE DATA |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Figure 11. Asynchronous Memory Write Cycle Timing
REV. A |
–27– |