參數(shù)資料
型號(hào): 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(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): 33/148頁
文件大小: 1204K
代理商: DSP56364P
External Memory Expansion Port (Port A)
DSP56364 Technical Data, Rev. 4
Freescale Semiconductor
3-17
Figure 3-11 DRAM Page Mode Wait States Selection Guide
Table 3-9 DRAM Page Mode Timings, One Wait State (Low-Power Applications)
1, 2, 3
No.
Characteristics
Symbol
Expression
20 MHz
4
30 MHz
4
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
Chip Frequency
(MHz)
DRAM Type
(tRAC ns)
100
80
70
60
40
66
80
100
1 Wait States
2 Wait States
3 Wait States
4 Wait States
Note: This figure should be use for primary selection. For
exact and detailed timings see the following tables.
AA0472
50
120
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