參數(shù)資料
型號(hào): DSP56004FJ81
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
元件分類(lèi): 數(shù)字信號(hào)處理
英文描述: SYMPHONY AUDIO DSP FAMILY 24-BIT DIGITAL SIGNAL PROCESSORS
中文描述: Symphony音頻DSP系列的24位數(shù)字信號(hào)處理器
文件頁(yè)數(shù): 35/82頁(yè)
文件大?。?/td> 636K
代理商: DSP56004FJ81
Specifications
External Memory Interface (EMI) DRAM Timing
MOTOROLA
DSP56004/D, Rev. 3
2-11
65 WR Deassertation to
CAS Assertion
t
RCS
slow
fast
9
×
T
C
– 11
6
×
T
C
– 11
3
×
T
C
– 13
2
×
T
C
– 13
T
L
– 6
169
109
125
80
100
63.1
ns
ns
66 CAS Assertion to WR
Deassertation
t
WCH
slow
fast
47
27
32
17
24
11.7
ns
ns
67 Data Valid to CAS
Assertion
(Data Setup Time)
t
DS
4
2
0.2
ns
68 CAS Assertion to Data
Not Valid (Data Hold
Time)
t
DH
slow
fast
3
×
T
C
+ T
H
14
2
×
T
C
+ T
H
14
7
×
T
C
+ T
H
14
5
×
T
C
+ T
H
14
4
×
T
C
– 14
3
×
T
C
– 14
7
×
T
C
– 9
5
×
T
C
– 9
56
36
39
24
29.2
16.8
ns
ns
69 RAS Assertion to Data
Not Valid
t
DHR
slow
fast
136
96
100
69
78.6
53.9
ns
ns
70 WR Assertion to CAS
Assertion
t
WCS
slow
fast
66
46
47
31
35.4
23
ns
ns
71 WR Assertion Pulse
Width (Single Cycle
Only)
t
WP
slow
fast
131
91
97
67
77.4
52.7
ns
ns
72RAS Assertion to WR
Deassertation
(Single Cycle Only)
t
WCR
slow
fast
7
×
T
C
– 15
5
×
T
C
– 15
125
85
91
61
71.5
46.7
ns
ns
73 WR Assertion to Data
Active
slow
fast
3
×
T
C
+ T
H
13
2
×
T
C
+ T
H
13
7
×
T
C
– 13
5
×
T
C
– 13
57
37
40
25
30.2
17.9
ns
ns
74 RD or WR Assertion to
RAS Deassertation
(Single Cycle Only)
t
ROH
,
t
RWL
slow
fast
127
87
93
63
73.4
48.7
ns
ns
Note:
1.
n is the number of successive accesses. n = 2, 3, 4, or 6.
Table 2-8
External Memory Interface (EMI) DRAM Timing (Continued)
No.
Characteristics
Symbol
Timing
Mode
Expression
50 MHz
66 MHz
81 MHz
Unit
Min Max Min Max Min
Max
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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