參數資料
型號: XCB56364PV100
廠商: MOTOROLA INC
元件分類: 數字信號處理
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: 42/162頁
文件大小: 2405K
代理商: XCB56364PV100
Specifications
External Memory Expansion Port (Port A)
2-22
DSP56364 Advance Information
MOTOROLA
Table 2-9 DRAM Page Mode Timings, One Wait State (Low-Power Applications)
1, 2, 3
No.
Characteristics
Symbol
Expression
20 MHz
6
30 MHz
6
Unit
Min
Max
Min
Max
131
Page mode cycle time for two
consecutive accesses of the
same direction
t
PC
2
×
T
C
100.0
66.7
ns
Page mode cycle time for
mixed (read and write)
accesses
1.25
×
T
C
62.5
41.7
132
CAS assertion to data valid
(read)
t
CAC
T
C
7.5
42.5
25.8
ns
133
Column address valid to data
valid (read)
t
AA
1.5
×
T
C
7.5
67.5
42.5
ns
134
CAS deassertion to data not
valid (read hold time)
t
OFF
0.0
0.0
ns
135
Last CAS assertion to RAS
deassertion
t
RSH
0.75
×
T
C
4.0
33.5
21.0
ns
136
Previous CAS deassertion to
RAS deassertion
t
RHCP
2
×
T
C
4.0
96.0
62.7
ns
137
CAS assertion pulse width
t
CAS
0.75
×
T
C
4.0
33.5
21.0
ns
138
Last CAS deassertion to RAS
deassertion
4
BRW[1:0] = 00
t
CRP
1.75
×
T
C
6.0
81.5
52.3
ns
BRW[1:0] = 01
3.25
×
T
C
6.0
156.5
102.2
ns
BRW[1:0] = 10
4.25
×
T
C
6.0
206.5
135.5
ns
BRW[1:0] = 11
6.25
×
T
C
– 6.0
306.5
202.1
ns
139
CAS deassertion pulse width
t
CP
0.5
×
T
C
4.0
21.0
12.7
ns
140
Column address valid to CAS
assertion
t
ASC
0.5
×
T
C
4.0
21.0
12.7
ns
141
CAS assertion to column
address not valid
t
CAH
0.75
×
T
C
4.0
33.5
21.0
ns
142
Last column address valid to
RAS deassertion
t
RAL
2
×
T
C
4.0
96.0
62.7
ns
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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