ADSP-218xN
IDMA Address Latch
Table 21. IDMA Address Latch
Parameter
Min
Timing Requirements:
tIALP
Duration of Address Latch1, 2
10
tIASU
IAD15–0 Address Setup Before Address Latch End2
5
tIAH
IAD15–0 Address Hold After Address Latch End2
3
tIKA
IACK Low before Start of Address Latch2, 3
0
tIALS
Start of Write or Read After Address Latch End2, 3
3
tIALD
Address Latch Start After Address Latch End1, 2
2
1 Start of Address Latch = IS Low and IAL High.
2 End of Address Latch = IS High or IAL Low.
3 Start of Write or Read = IS Low and IWR Low or IRD Low.
IACK
IAL
IS
IAD15–0
IRD OR IWR
tIKA
tIALP
tIALD
tIALP
tIASU
tIAH
tIASU
tIAH
tIALS
Figure 32. IDMA Address Latch
Max
Unit
ns
ns
ns
ns
ns
ns
Rev. A | Page 34 of 48 | August 2006