
ADSP-21020
Flags
|
|
|
|
|
|
|
|
|
| K/B/T Grade | K/B/T Grade | B/T Grade | K Grade |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| 20 MHz | 25 MHz | 30 MHz | 33.3 MHz | Frequency Dependency* |
| |
Parameter | Min Max | Min Max | Min Max | Min Max | Min | Max | Unit | |||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Timing Requirement:1 |
|
|
|
|
|
|
| |||||||||
tSFI |
| 19 | 16 | 14 | 13 | 19 + 5DT/16 | ns | |||||||||
tHFI | 0 | 0 | 0 | 0 |
|
| ns | |||||||||
tDWRFI | xRD | , | xWR | Low | 12 | 8 | 5 | 3 |
| 12 + 7DT/16 | ns | |||||
tHFIWR | xRD | , | xWR |
| 0 | 0 | 0 | 0 |
|
| ns | |||||
| Deasserted |
|
|
|
|
|
|
| ||||||||
Switching Characteristic: |
|
|
|
|
|
|
| |||||||||
tDFO |
| 24 | 24 | 24 | 24 |
|
| ns | ||||||||
tHFO |
| 5 | 5 | 5 | 5 |
|
| ns | ||||||||
tDFOE | CLKIN High to | 1 | 1 | 1 | 1 |
|
| ns | ||||||||
tDFOD | CLKIN High to | 24 | 24 | 24 | 24 |
|
| ns |
NOTES
*DT = tCK – 50 ns
1Flag inputs meeting these setup and hold times will affect conditional operations in the next instruction cycle. See the Hardware Configuration chapter of the
x = PM or DM.
CLKIN
| tDFO |
tDFO | tDFOD |
tDFOE | tHFO |
CLKIN
tSFI
FLAG OUTPUT
tHFI
tDWRFI
xRD, xWR
tHFIWR
FLAG INPUT
Figure 7. Flags
REV. C |