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EP9312-CBZ
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P39
P40-P42
P43-P45
P46-P48
P49-P51
P52-P54
P55-P57
P58-P60
P61-P62
16
Copyright 20
10 Cirrus Logi
c (All Rights Rese
rved)
DS515F2
EP9312
Universal Platform SOC Processor
SDRAM Burst Read Cycle
Figure 3. SDRAM Burst Read Cyc
le Timing Measurement
n
n + 1
n + 2
n + 3
S
DCLK
S
DC
S
n
RA
S
n
CA
S
n
S
DW
En
DQMn
CL = 2
AD
DA
CL = 2
t
DAs
t
clk_low
t
clk_high
t
clkrf
t
d
t
d
t
h
t
DAh
t
DQh
t
DQd
n
n + 1
n + 2
n + 3
t
DAs
t
DAh
DA
CL =
3
DQMn
CL =
3
t
DQh
DS515F2
Copyright 201
0 Cirrus Logic (A
ll Rights Reser
ved)
17
EP9312
Universal Platform
SOC Processor
SDRAM Burst Write Cycle
Figure 4. SDRAM Burst Write Cycle Timin
g Measurement
S
DCLK
S
DC
S
n
RA
S
n
CA
S
n
S
DWEn
DQMn
AD
DA
t
clk_l
ow
t
clk_hi
gh
t
clkrf
t
d
t
h
t
h
n
n +1
n + 2
n + 3
18
Copyright 20
10 Cirrus Logi
c (All Rights Rese
rved)
DS515F2
EP9312
Universal Platform SOC Processor
SDRAM Auto Refresh Cycle
Note:
Chip select shown as bus to illustrate multiple devices being put into auto refresh in one
access
Figure 5. SDRAM Auto Ref
resh Cycle Timing Measurement
S
DCLK
S
DC
S
n
RA
S
n
CA
S
n
S
DWEn
t
cl
k_lo
w
t
clk_
high
7b
de
t
d
t
h
t
clkrf
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P39
P40-P42
P43-P45
P46-P48
P49-P51
P52-P54
P55-P57
P58-P60
P61-P62
EP9312-CBZ
Mfr. #:
Buy EP9312-CBZ
Manufacturer:
Cirrus Logic
Description:
Microprocessors - MPU IC Universl Pltform ARM9 SOC Prcessor
Lifecycle:
New from this manufacturer.
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EP9312-CBZ
EP9312-IBZ