EP7312-CB-90 CIRRUS [Cirrus Logic], EP7312-CB-90 Datasheet - Page 16

• Manufacturer Part Number: EP7312-CB-90
• Description: HIGH-PERFORMANCE, LOW-POWER SYSTEM ON CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE
• Manufacturer: CIRRUS [Cirrus Logic]

EP7312
High-Performance, Low-Power System on Chip
SDRAM Interface
Figure 3
values for the timings of each of the SDRAM modes.
16
SDCLK rising edge to SDCS assert delay time
SDCLK rising edge to SDCS deassert delay time
SDCLK rising edge to SDRAS assert delay time
SDCLK rising edge to SDRAS deassert delay time
SDCLK rising edge to SDRAS invalid delay time
SDCLK rising edge to SDCAS assert delay time
SDCLK rising edge to SDCAS deassert delay time
SDCLK rising edge to ADDR transition time
SDCLK rising edge to ADDR invalid delay time
SDCLK rising edge to SDMWE assert delay time
SDCLK rising edge to SDMWE deassert delay time
DATA transition to SDCLK rising edge time
SDCLK rising edge to DATA transition hold time
SDCLK rising edge to DATA transition delay time
through
Figure 6
define the timings associated with all phases of the SDRAM. The following table contains the
Parameter
©
C opyright Cirrus Logic, Inc. 2003
(All Rights Reserved)
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RAnv
MWa
MWd
CSa
CSd
RAa
RAd
CAa
CAd
ADv
ADx
DAs
DAh
DAd
Min
− 3
− 3
− 2
− 5
− 3
− 2
− 2
− 4
0
1
2
0
-
-
Typ
2
2
3
1
4
2
0
1
2
1
0
-
-
-
Max
10
10
15
4
7
7
5
3
5
5
5
4
2
1
DS508PP5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns