ep7312 Cirrus Logic, Inc., ep7312 Datasheet - Page 21

• Manufacturer Part Number: ep7312
• Description: High-performance, Low-power, System-on-chip With Sdram & Enhanced Digital Audio Interface
• Manufacturer: Cirrus Logic, Inc.

Static Memory
Figure 7
values for the timings of each of the Static Memory modes.
DS508F1
EXPCLK rising edge to nCS assert delay time
EXPCLK falling edge to nCS deassert hold time
EXPCLK rising edge to A assert delay time
EXPCLK falling edge to A deassert hold time
EXPCLK rising edge to nMWE assert delay time
EXPCLK rising edge to nMWE deassert hold time
EXPCLK falling edge to nMOE assert delay time
EXPCLK falling edge to nMOE deassert hold time
EXPCLK falling edge to HALFWORD deassert delay time
EXPCLK falling edge to WORD assert delay time
EXPCLK rising edge to data valid delay time
EXPCLK falling edge to data invalid delay time
Data setup to EXPCLK falling edge time
EXPCLK falling edge to data hold time
EXPCLK rising edge to WRITE assert delay time
EXPREADY setup to EXPCLK falling edge time
EXPCLK falling edge to EXPREADY hold time
through
Figure 10
define the timings associated with all phases of the Static Memory. The following table contains the
Parameter
©
Copyright Cirrus Logic, Inc. 2005
(All Rights Reserved)
Symbol
t
t
t
t
t
t
t
MOEd
MOEh
t
t
t
t
MWd
MWh
t
HWd
WDd
WRd
CSd
CSh
t
t
t
t
Dnv
t
EXs
EXh
Ad
Ah
Dv
Ds
Dh
High-Performance, Low-Power System on Chip
Min
2
2
4
3
3
3
3
2
2
2
8
6
5
-
-
-
-
Typ
10
13
15
11
8
7
9
6
6
7
7
8
8
-
-
-
-
Max
20
20
16
19
10
10
10
10
20
16
21
30
23
1
3
0
0
EP7312
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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