參數(shù)資料
型號(hào): DSP56366P
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(hào)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(hào)處理器
文件頁數(shù): 48/110頁
文件大?。?/td> 1273K
代理商: DSP56366P
DSP56366 Technical Data, Rev. 3.1
3-22
Freescale Semiconductor
140
Column address valid to CAS assertion
t
ASC
T
C
4.0
4.3
ns
141
CAS assertion to column address not valid
t
CAH
3.5
×
T
C
4.0
25.2
ns
142
Last column address valid to RAS deassertion
t
RAL
5
×
T
C
4.0
37.7
ns
143
WR deassertion to CAS assertion
t
RCS
1.25
×
T
C
4.0
6.4
ns
144
CAS deassertion to WR assertion
t
RCH
1.25
×
T
C
4.0
6.4
ns
145
CAS assertion to WR deassertion
t
WCH
3.25
×
T
C
4.2
22.9
ns
146
WR assertion pulse width
t
WP
4.5
×
T
C
4.5
33.0
ns
147
Last WR assertion to RAS deassertion
t
RWL
4.75
×
T
C
4.3
35.3
ns
148
WR assertion to CAS deassertion
t
CWL
3.75
×
T
C
4.3
26.9
ns
149
Data valid to CAS assertion (write)
t
DS
0.5
×
T
C
4.0
0.2
ns
150
CAS assertion to data not valid (write)
t
DH
3.5
×
T
C
4.0
25.2
ns
151
WR assertion to CAS assertion
t
WCS
1.25
×
T
C
4.3
6.1
ns
152
Last RD assertion to RAS deassertion
t
ROH
4.5
×
T
C
4.0
33.5
ns
153
RD assertion to data valid
t
GA
3.25
×
T
C
7.0
20.1
ns
154
RD deassertion to data not valid
6
t
GZ
0.0
ns
155
WR assertion to data active
0.75
×
T
C
0.3
5.9
ns
156
WR deassertion to data high impedance
0.25
×
T
C
2.1
ns
1
The number of wait states for Page mode access is specified in the DCR.
2
The refresh period is specified in the DCR.
3
The asynchronous delays specified in the expressions are valid for
DSP56366
.
4
All the timings are calculated for the worst case. Some of the timings are better for specific cases (e.g., t
PC
equals 3
×
T
C
for
read-after-read or write-after-write sequences).
5
BRW[1:0] (DRAM control register bits) defines the number of wait states that should be inserted in each DRAM out-of-page
access.
6
RD deassertion will always occur after CAS deassertion; therefore, the restricted timing is t
OFF
and not t
GZ
.
Table 3-12 DRAM Page Mode Timings, Four Wait States
1, 2, 3
(continued)
No.
Characteristics
Symbol
Expression
4
Min
Max
Unit
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DSP56366UM 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:24-Bit Audio Digital Signal Processor
DSP56367 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic
DSP56367P 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:24-Bit Audio Digital Signal Processor
DSP56367UM 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:24-Bit Audio Digital Signal Processor
DSP56371 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:high density CMOS device