參數(shù)資料
型號: DSP56364P
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
元件分類: 數(shù)字信號處理
英文描述: 24-Bit Audio Digital Signal Processor
中文描述: 24位音頻數(shù)字信號處理器
文件頁數(shù): 46/148頁
文件大?。?/td> 1204K
代理商: DSP56364P
External Memory Expansion Port (Port A)
DSP56364 Technical Data, Rev. 4
3-30
Freescale Semiconductor
164
CAS assertion to RAS deassertion
t
RSH
3.25
×
T
C
4.0
45.2
36.6
ns
165
RAS assertion to CAS deassertion
t
CSH
4.75
×
T
C
4.0
68.0
55.5
ns
166
CAS assertion pulse width
t
CAS
2.25
×
T
C
4.0
30.1
24.1
ns
167
RAS assertion to CAS assertion
t
RCD
2.5
×
T
C
±
2
35.9
39.9
29.3
33.3
ns
168
RAS assertion to column address valid
t
RAD
1.75
×
T
C
±
2
24.5
28.5
19.9
23.9
ns
169
CAS deassertion to RAS assertion
t
CRP
4.25
×
T
C
4.0
59.8
49.1
ns
170
CAS deassertion pulse width
t
CP
2.75
×
T
C
4.0
37.7
30.4
ns
171
Row address valid to RAS assertion
t
ASR
3.25
×
T
C
4.0
45.2
36.6
ns
172
RAS assertion to row address not valid
t
RAH
1.75
×
T
C
4.0
22.5
17.9
ns
173
Column address valid to CAS
assertion
t
ASC
0.75
×
T
C
4.0
7.4
5.4
ns
174
CAS assertion to column address not
valid
t
CAH
3.25
×
T
C
4.0
45.2
36.6
ns
175
RAS assertion to column address not
valid
t
AR
5.75
×
T
C
4.0
83.1
67.9
ns
176
Column address valid to RAS
deassertion
t
RAL
4
×
T
C
4.0
56.6
46.0
ns
177
WR deassertion to CAS assertion
t
RCS
2
×
T
C
3.8
26.5
21.2
ns
178
CAS deassertion to WR
5
assertion
t
RCH
1.25
×
T
C
3.7
15.2
11.9
ns
179
RAS deassertion to WR
5
assertion
t
RRH
0.25
×
T
C
3.7
0.1
ns
0.25
×
T
C
3.0
0.1
ns
180
CAS assertion to WR deassertion
t
WCH
3
×
T
C
4.2
41.3
33.3
ns
181
RAS assertion to WR deassertion
t
WCR
5.5
×
T
C
4.2
79.1
64.6
ns
182
WR assertion pulse width
t
WP
8.5
×
T
C
4.5
124.3
101.8
ns
183
WR assertion to RAS deassertion
t
RWL
8.75
×
T
C
4.3
128.3
105.1
ns
184
WR assertion to CAS deassertion
t
CWL
7.75
×
T
C
4.3
113.1
92.6
ns
185
Data valid to CAS assertion (write)
t
DS
4.75
×
T
C
4.0
68.0
55.4
ns
Table 3-14 DRAM Out-of-Page and Refresh Timings, Eight Wait States
1, 2
(continued)
No.
Characteristics
3
Symbol
Expression
4
66 MHz
80 MHz
Unit
Min
Max
Min
Max
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