dsp56004 Freescale Semiconductor, Inc, dsp56004 Datasheet - Page 35

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

Note:
No.
MOTOROLA
65 WR Deassertation to
66 CAS Assertion to WR
67 Data Valid to CAS
68 CAS Assertion to Data
69 RAS Assertion to Data
70 WR Assertion to CAS
71 WR Assertion Pulse
72 RAS Assertion to WR
73 WR Assertion to Data
74 RD or WR Assertion to
CAS Assertion
Deassertation
Assertion
(Data Setup Time)
Not Valid (Data Hold
Time)
Not Valid
Assertion
Width (Single Cycle
Only)
Deassertation
(Single Cycle Only)
Active
RAS Deassertation
(Single Cycle Only)
1.
Characteristics
n is the number of successive accesses. n = 2, 3, 4, or 6.
Table 2-8 External Memory Interface (EMI) DRAM Timing (Continued)
Freescale Semiconductor, Inc.
For More Information On This Product,
Symbol
t
t
t
t
t
t
t
ROH
WCH
t
DHR
t
WCR
RWL
t
WCS
RCS
DH
WP
DS
Go to: www.freescale.com
,
Timing
DSP56004/D, Rev. 3
Mode
slow
slow
slow
slow
slow
slow
slow
slow
slow
fast
fast
fast
fast
fast
fast
fast
fast
fast
2
7
3
3
5
2
Expression
9
6
3
2
4
7
5
7
5
3
7
5
T
T
T
T
T
T
T
T
T
T
T
T
T
L
T
T
T
T
C
C
C
C
C
C
14
14
14
14
T
T
13
13
C
C
C
C
C
C
C
C
C
C
External Memory Interface (EMI) DRAM Timing
– 6
+ T
+ T
+ T
+ T
C
C
+ T
+ T
– 14
– 11
– 11
– 13
– 13
– 14
– 15
– 15
– 13
– 13
– 9
– 9
H
H
H
H
H
H
–
–
–
–
–
–
Min Max Min Max Min Max
169
109
136
131
125
127
50 MHz
47
27
56
36
96
66
46
91
85
57
37
87
4
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
125
100
66 MHz
80
32
17
39
24
69
47
31
97
67
91
61
40
25
93
63
2
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
63.1
11.7
29.2
16.8
78.6
53.9
35.4
77.4
52.7
71.5
46.7
30.2
17.9
73.4
48.7
100
0.2
24
23
81 MHz
Specifications
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2-11
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns