參數(shù)資料
型號: XCB56364PV100
廠商: MOTOROLA INC
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: 8-BIT, 100 MHz, OTHER DSP, PQFP112
封裝: QFP-112
文件頁數(shù): 60/162頁
文件大?。?/td> 2405K
代理商: XCB56364PV100
Specifications
External Memory Expansion Port (Port A)
2-40
DSP56364 Advance Information
MOTOROLA
180
CAS assertion to WR deassertion
t
WCH
5
×
T
C
4.2
45.8
ns
181
RAS assertion to WR deassertion
t
WCR
7.5
×
T
C
4.2
70.8
ns
182
WR assertion pulse width
t
WP
11.5
×
T
C
4.5
110.5
ns
183
WR assertion to RAS deassertion
t
RWL
11.75
×
T
C
4.3
113.2
ns
184
WR assertion to CAS deassertion
t
CWL
10.25
×
T
C
4.3
103.2
ns
185
Data valid to CAS assertion (write)
t
DS
5.75
×
T
C
4.0
53.5
ns
186
CAS assertion to data not valid (write)
t
DH
5.25
×
T
C
4.0
48.5
ns
187
RAS assertion to data not valid (write)
t
DHR
7.75
×
T
C
4.0
73.5
ns
188
WR assertion to CAS assertion
t
WCS
6.5
×
T
C
4.3
60.7
ns
189
CAS assertion to RAS assertion (refresh)
t
CSR
1.5
×
T
C
4.0
11.0
ns
190
RAS deassertion to CAS assertion (refresh)
t
RPC
2.75
×
T
C
4.0
23.5
ns
191
RD assertion to RAS deassertion
t
ROH
11.5
×
T
C
4.0
111.0
ns
192
RD assertion to data valid
t
GA
10
×
T
C
7.0
93.0
ns
193
RD deassertion to data not valid
4
t
GZ
0.0
ns
194
WR assertion to data active
0.75
×
T
C
0.3
7.2
ns
195
WR deassertion to data high impedance
0.25
×
T
C
2.5
ns
Notes:
1.
2.
3.
4.
5.
The number of wait states for out-of-page access is specified in the DCR.
The refresh period is specified in the DCR.
The asynchronous delays specified in the expressions are valid for DSP56364.
RD deassertion will always occur after CAS deassertion; therefore, the restricted timing is t
OFF
and not t
GZ
.
Either t
RCH
or t
RRH
must be satisfied for read cycles.
Table 2-15 DRAM Out-of-Page and Refresh Timings, Eleven Wait States
1, 2
(continued)
No.
Characteristics
4
Symbol
Expression
3
Min
Max
Unit
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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