參數(shù)資料
型號(hào): DSPB56362AG120
廠商: Freescale Semiconductor
文件頁數(shù): 105/152頁
文件大小: 0K
描述: IC DSP 24BIT AUD 120MHZ 144-LQFP
標(biāo)準(zhǔn)包裝: 60
系列: DSP56K/Symphony
類型: 音頻處理器
接口: 主機(jī)接口,I²C,SAI,SPI
時(shí)鐘速率: 120MHz
非易失內(nèi)存: ROM(126 kB)
芯片上RAM: 42kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 3.30V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 144-LQFP
供應(yīng)商設(shè)備封裝: 144-LQFP(20x20)
包裝: 托盤
External Memory Expansion Port (Port A)
DSP56362 Technical Data, Rev. 4
3-30
Freescale Semiconductor
191
RD assertion to RAS deassertion
tROH
4.5
× T
C 4.0
221.0
146.0
ns
192
RD assertion to data valid
tGA
4
× T
C 7.5
192.5
125.8
ns
193
RD deassertion to data not valid3
tGZ
0.0
0.0
ns
194
WR assertion to data active
0.75
× T
C 0.3
37.2
24.7
ns
195
WR deassertion to data high impedance
0.25
× T
C
12.5
8.3
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 Reduced DSP clock speed allows use of DRAM out-of-page access with four Wait states. See
Table 3-14 DRAM Out-of-Page and Refresh Timings, Eight Wait States1, 2
No.
Characteristics3
Symbol
Expression4
80 MHz
Unit
Min
Max
157
Random read or write cycle time
tRC
9
× T
C
112.5
ns
158
RAS assertion to data valid (read)
tRAC
4.75
× T
C 6.5
52.9
ns
159
CAS assertion to data valid (read)
tCAC
2.25
× T
C 6.5
21.6
ns
160
Column address valid to data valid (read)
tAA
3
× T
C 6.5
31.0
ns
161
CAS deassertion to data not valid (read hold time)
tOFF
0.0
ns
162
RAS deassertion to RAS assertion
tRP
3.25
× T
C 4.0
36.6
ns
163
RAS assertion pulse width
tRAS
5.75
× T
C 4.0
67.9
ns
164
CAS assertion to RAS deassertion
tRSH
3.25
× T
C 4.0
36.6
ns
165
RAS assertion to CAS deassertion
tCSH
4.75
× T
C 4.0
55.4
ns
166
CAS assertion pulse width
tCAS
2.25
× T
C 4.0
24.1
ns
167
RAS assertion to CAS assertion
tRCD
2.5
× T
C ± 2
29.3
33.3
ns
168
RAS assertion to column address valid
tRAD
1.75
× T
C ± 2
19.9
23.9
ns
169
CAS deassertion to RAS assertion
tCRP
4.25
× T
C 4.0
49.1
ns
170
CAS deassertion pulse width
tCP
2.75
× T
C 4.0
30.4
ns
171
Row address valid to RAS assertion
tASR
3.25
× T
C 4.0
36.6
ns
Table 3-13 DRAM Out-of-Page and Refresh Timings, Four Wait States1, 2 (continued)
No.
Characteristics3
Symbol
Expression
20 MHz4
30 MHz4
Unit
Min
Max
Min
Max
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