参数资料
型号: DSPB56362AG120
厂商: Freescale Semiconductor
文件页数: 95/152页
文件大小: 0K
描述: IC DSP 24BIT AUD 120MHZ 144-LQFP
标准包装: 60
系列: DSP56K/Symphony
类型: 音频处理器
接口: 主机接口,I²C,SAI,SPI
时钟速率: 120MHz
非易失内存: ROM(126 kB)
芯片上RAM: 42kB
电压 - 输入/输出: 3.30V
电压 - 核心: 3.30V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 144-LQFP
供应商设备封装: 144-LQFP(20x20)
包装: 托盘
External Memory Expansion Port (Port A)
DSP56362 Technical Data, Rev. 4
Freescale Semiconductor
3-21
Table 3-10
DRAM Page Mode Timings, Two Wait States1, 2, 3, 4
No.
Characteristics
Symbol
Expression
80 MHz
Unit
Min
Max
131
Page mode cycle time for two consecutive accesses of the
same direction5
Page mode cycle time for mixed (read and write) accesses.5
tPC
3
× T
C
2.75 x Tc
37.5
34.4
ns
132
CAS assertion to data valid (read)
tCAC
1.5
× T
C 6.5
12.3
ns
133
Column address valid to data valid (read)
tAA
2.5
× T
C 6.5
24.8
ns
134
CAS deassertion to data not valid (read hold time)
tOFF
0.0
ns
135
Last CAS assertion to RAS deassertion
tRSH
1.75
× T
C 4.0
17.9
ns
136
Previous CAS deassertion to RAS deassertion
tRHCP
3.25
× T
C 4.0
36.6
ns
137
CAS assertion pulse width
tCAS
1.5
× T
C 4.0
14.8
ns
138
Last CAS deassertion to RAS deassertion6
BRW[1:0] = 00
BRW[1:0] = 01
BRW[1:0] = 10
BRW[1:0] = 11
tCRP
2.0
× T
C 6.0
3.5
× T
C 6.0
4.5
× T
C 6.0
6.5
× T
C 6.0
19.0
37.8
50.3
75.3
ns
139
CAS deassertion pulse width
tCP
1.25
× T
C 4.0
11.6
ns
140
Column address valid to CAS assertion
tASC
TC 4.0
8.5
ns
141
CAS assertion to column address not valid
tCAH
1.75
× T
C 4.0
17.9
ns
142
Last column address valid to RAS deassertion
tRAL
3
× T
C 4.0
33.5
ns
143
WR deassertion to CAS assertion
tRCS
1.25
× T
C 3.8
11.8
ns
144
CAS deassertion to WR assertion
tRCH
0.5
× T
C 3.7
2.6
ns
145
CAS assertion to WR deassertion
tWCH
1.5
× T
C 4.2
14.6
ns
146
WR assertion pulse width
tWP
2.5
× T
C 4.5
26.8
ns
147
Last WR assertion to RAS deassertion
tRWL
2.75
× T
C 4.3
30.1
ns
148
WR assertion to CAS deassertion
tCWL
2.5
× T
C 4.3
27.0
ns
149
Data valid to CAS assertion (write)
tDS
0.25
× T
C 3.0
0.1
ns
150
CAS assertion to data not valid (write)
tDH
1.75
× T
C 4.0
17.9
ns
151
WR assertion to CAS assertion
tWCS
TC 4.3
8.2
ns
152
Last RD assertion to RAS deassertion
tROH
2.5
× T
C 4.0
27.3
ns
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