參數(shù)資料
型號: DSPB56362AG120
廠商: Freescale Semiconductor
文件頁數(shù): 100/152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
Freescale Semiconductor
3-25
149
Data valid to CAS assertion (write)
tDS
0.5
× T
C 4.0
1.0
0.2
ns
150
CAS assertion to data not valid (write)
tDH
3.5
× T
C 4.0
31.0
25.2
ns
151
WR assertion to CAS assertion
tWCS
1.25
× T
C 4.3
8.2
6.1
ns
152
Last RD assertion to RAS deassertion
tROH
4.5
× T
C 4.0
41.0
33.5
ns
153
RD assertion to data valid
tGA
100 MHz:
3.25
× T
C 7.0
25.5
20.1
ns
154
RD deassertion to data not valid6
tGZ
0.0
0.0
ns
155
WR assertion to data active
0.75
× T
C 0.3
7.2
5.9
ns
156
WR deassertion to data high impedance
0.25
× T
C
2.5
2.1
ns
1 The number of wait states for Page mode access is specified in the DCR.
2 The refresh period is specified in the DCR.
3 The asynchronous delays specified in the expressions are valid for DSP56362.
4 All the timings are calculated for the worst case. Some of the timings are better for specific cases (e.g., t
PC equals 3 × TC for
read-after-read or write-after-write sequences).
5 BRW[1:0] (DRAM control register bits) defines the number of wait states that should be inserted in each DRAM out-of-page
access.
6 RD deassertion will always occur after CAS deassertion; therefore, the restricted timing is t
OFF and not tGZ.
Table 3-12
DRAM Page Mode Timings, Four Wait States 100 and 120MHz1, 2, 3, 4 (continued)
No.
Characteristics
Symbol
Expression
100 MHz
120 MHz
Unit
Min
Max
Min
Max
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