Datasheet

Rev. C | Page 30 of 48 | January 2008
ADSP-2184L/ADSP-2185L/ADSP-2186L/ADSP-2187L
IDMA Address Latch
Table 20. IDMA Address Latch
Parameter Min Max Unit
Timing Requirements:
t
IALP
Duration of Address Latch
1, 2
10 ns
t
IASU
IAD15–0 Address Setup Before Address Latch End
2
5ns
t
IAH
IAD15–0 Address Hold After Address Latch End
2, 3
3ns
t
IKA
IACK Low Before Start of Address Latch
2, 4
0ns
t
IALS
Start of Write or Read After Address Latch End
2, 4
3ns
t
IALD
Address Latch Start After Address Latch End
1, 2
2ns
1
Start of Address Latch = IS Low and IAL High.
2
End of Address Latch = IS High or IAL Low.
3
For the ADSP-2187L, this specification is 2 ns min.
4
Start of Write or Read = IS Low and IWR Low or IRD Low.
Figure 22. IDMA Address Latch
IACK
IAL
IS
IAD15–0
IRD OR IWR
t
IKA
t
IALP
t
IASU
t
IAH
t
IASU
t
IALS
t
IAH
t
IALP
t
IALD