参数资料
型号: DSPB56362AG120
厂商: Freescale Semiconductor
文件页数: 106/152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
3-31
172
RAS assertion to row address not valid
tRAH
1.75
× T
C 4.0
17.9
ns
173
Column address valid to CAS assertion
tASC
0.75
× T
C 4.0
5.4
ns
174
CAS assertion to column address not valid
tCAH
3.25
× T
C 4.0
36.6
ns
175
RAS assertion to column address not valid
tAR
5.75
× T
C 4.0
67.9
ns
176
Column address valid to RAS deassertion
tRAL
4
× T
C 4.0
46.0
ns
177
WR deassertion to CAS assertion
tRCS
2
× T
C 3.8
21.2
ns
178
CAS deassertion to WR5 assertion
tRCH
1.25
× T
C 3.7
11.9
ns
179
RAS deassertion to WR5 assertion
tRRH
0.25
× T
C 3.0
0.1
ns
180
CAS assertion to WR deassertion
tWCH
3
× T
C 4.2
33.3
ns
181
RAS assertion to WR deassertion
tWCR
5.5
× T
C 4.2
64.6
ns
182
WR assertion pulse width
tWP
8.5
× T
C 4.5
101.8
ns
183
WR assertion to RAS deassertion
tRWL
8.75
× T
C 4.3
105.1
ns
184
WR assertion to CAS deassertion
tCWL
7.75
× T
C 4.3
92.6
ns
185
Data valid to CAS assertion (write)
tDS
4.75
× T
C 4.0
55.4
ns
186
CAS assertion to data not valid (write)
tDH
3.25
× T
C 4.0
36.6
ns
187
RAS assertion to data not valid (write)
tDHR
5.75
× T
C 4.0
67.9
ns
188
WR assertion to CAS assertion
tWCS
5.5
× T
C 4.3
64.5
ns
189
CAS assertion to RAS assertion (refresh)
tCSR
1.5
× T
C 4.0
14.8
ns
190
RAS deassertion to CAS assertion (refresh)
tRPC
1.75
× T
C 4.0
17.9
ns
191
RD assertion to RAS deassertion
tROH
8.5
× T
C 4.0
102.3
ns
192
RD assertion to data valid
tGA
7.5
× T
C 6.5
87.3
ns
193
RD deassertion to data not valid3
tGZ
0.0
ns
194
WR assertion to data active
0.75
× T
C 0.3
9.1
ns
195
WR deassertion to data high impedance
0.25
× T
C
—3.1
ns
1 The number of wait states for out-of-page access is specified in the DCR.
2 The refresh period is specified in the DCR.
3 RD deassertion will always occur after CAS deassertion; therefore, the restricted timing is t
OFF and not tGZ.
4 The asynchronous delays specified in the expressions are valid for DSP56362.
5 Either t
RCH or tRRH must be satisfied for read cycles.
Table 3-14 DRAM Out-of-Page and Refresh Timings, Eight Wait States1, 2 (continued)
No.
Characteristics3
Symbol
Expression4
80 MHz
Unit
Min
Max
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