参数资料
型号: DSPB56364AF100
厂商: Freescale Semiconductor
文件页数: 95/148页
文件大小: 0K
描述: IC DSP 24BIT AUD 100MHZ 100-LQFP
标准包装: 90
系列: DSP56K/Symphony
类型: 音频处理器
接口: 主机接口,I²C,SAI,SPI
时钟速率: 100MHz
非易失内存: ROM(24 kB)
芯片上RAM: 11.25kB
电压 - 输入/输出: 3.30V
电压 - 核心: 3.30V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-LQFP(14x14)
包装: 托盘
External Memory Expansion Port (Port A)
DSP56364 Technical Data, Rev. 4.1
3-34
Freescale Semiconductor
173
Column address valid to CAS assertion
tASC
0.75
× T
C 4.0
3.5
ns
174
CAS assertion to column address not valid
tCAH
6.25
× T
C 4.0
58.5
ns
175
RAS assertion to column address not valid
tAR
9.75
× T
C 4.0
93.5
ns
176
Column address valid to RAS deassertion
tRAL
7
× T
C 4.0
66.0
ns
177
WR deassertion to CAS assertion
tRCS
5
× T
C 3.8
46.2
ns
178
CAS deassertion to WR4 assertion
tRCH
1.75
× T
C 3.7
13.8
ns
179
RAS deassertion to WR4 assertion
tRRH
0.25
× T
C 2.0
0.5
ns
180
CAS assertion to WR deassertion
tWCH
6
× T
C 4.2
55.8
ns
181
RAS assertion to WR deassertion
tWCR
9.5
× T
C 4.2
90.8
ns
182
WR assertion pulse width
tWP
15.5
× T
C 4.5
150.5
ns
183
WR assertion to RAS deassertion
tRWL
15.75
× T
C 4.3
153.2
ns
184
WR assertion to CAS deassertion
tCWL
14.25
× T
C 4.3
138.2
ns
185
Data valid to CAS assertion (write)
tDS
8.75
× T
C 4.0
83.5
ns
186
CAS assertion to data not valid (write)
tDH
6.25
× T
C 4.0
58.5
ns
187
RAS assertion to data not valid (write)
tDHR
9.75
× T
C 4.0
93.5
ns
188
WR assertion to CAS assertion
tWCS
9.5
× T
C 4.3
90.7
ns
189
CAS assertion to RAS assertion (refresh)
tCSR
1.5
× T
C 4.0
11.0
ns
190
RAS deassertion to CAS assertion (refresh)
tRPC
4.75
× T
C 4.0
43.5
ns
191
RD assertion to RAS deassertion
tROH
15.5
× T
C 4.0
151.0
ns
192
RD assertion to data valid
tGA
14
× T
C 5.7
134.3
ns
193
RD deassertion to data not valid3
tGZ
0.0
ns
194
WR assertion to data active
0.75
× T
C 0.3
7.2
ns
195
WR deassertion to data high impedance
0.25
× T
C
—2.5
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 Either t
RCH or tRRH must be satisfied for read cycles.
Table 3-16 DRAM Out-of-Page and Refresh Timings, Fifteen Wait States1, 2 (continued)
No.
Characteristics3
Symbol
Expression
Min
Max
Unit
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