dsp56004 Freescale Semiconductor, Inc, dsp56004 Datasheet - Page 42

• Manufacturer Part Number: dsp56004
• Description: Symphonytm Audio Dsp Family 24-bit Digital Signal Processors
• Manufacturer: Freescale Semiconductor, Inc

No.
Note:
Specifications
External Memory Interface (EMI) SRAM Timing
100 Data Setup Time to WR
101 Data Hold Time from WR
102 WR Assertion to Data Valid
103 WR Deassertation to Data
104 WR Assertion to Data
2-18
98 RD Deassertation to Data
99 Address Valid to WR
MA16/
MA17/
Not Valid (Data Hold Time)
Deassertation
Deassertation
Deassertation
high impedance
Active
1.
MA0–MA14
MA15/
MCS2
MCS1
MD0–MD7
Characteristics
This value is periodically sampled and not 100% tested.
/
/
MCS0
MCAS
MRAS
MCS3
WR
RD
Table 2-10 External Memory Interface (EMI) SRAM Timing
1
Freescale Semiconductor, Inc.
t
t
For More Information On This Product,
Symbol
CW
DS
Figure 2-13 SRAM Read Cycle
t
t
OHZ
DH
—
—
—
(t
, t
DW
AW
DSP56004/D, Rev. 3
94
)
92
Go to: www.freescale.com
3
T
Expression
C
T
Ws
Ws
T
C
+ T
T
T
T
H
H
H
H
+ T
96
0
+ 10
L
+ 4
– 6
– 6
T
L
– 5 +
T
C
C
–14 +
91
97
93
Min Max Min Max Min Max
50 MHz
56
25
—
—
0
4
4
—
—
—
—
—
14
20
Data In
66 MHz
39
18
—
—
0
2
2
—
—
—
—
—
12
18
95
94
29.2
11.0
0.2
0.2
—
—
81 MHz
0
98
MOTOROLA
10.2
16.2
—
—
—
—
—
AA0267
Unit
ns
ns
ns
ns
ns
ns
ns