- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377000 > DSP56321 (飛思卡爾半導(dǎo)體(中國)有限公司) 24-Bit Digital Signal Processor PDF資料下載
參數(shù)資料
| 型號： | DSP56321 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | 24-Bit Digital Signal Processor |
| 中文描述： | 24位數(shù)字信號處理器 |
| 文件頁數(shù)： | 64/84頁 |
| 文件大?。?/td> | 898K |
| 代理商： | DSP56321 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁當(dāng)前第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁
DSP56321 Technical Data, Rev. 11
4-4
Freescale Semiconductor
Design Considerations
Equation 4:
The maximum internal current (I
CCI
max) value reflects the typical possible switching of the internal buses on best-
case operation conditions—not necessarily a real application case. The typical internal current (I
CCItyp
) value
reflects the average switching of the internal buses on typical operating conditions.
Perform the following steps for applications that require very low current consumption:
1.
Set the EBD bit when you are not accessing external memory.
2.
Minimize external memory accesses, and use internal memory accesses.
3.
Minimize the number of pins that are switching.
4.
Minimize the capacitive load on the pins.
5.
Connect the unused inputs to pull-up or pull-down resistors.
6.
Disable unused peripherals.
7.
Disable unused pin activity (for example,
CLKOUT
,
XTAL
).
One way to evaluate power consumption is to use a current-per-MIPS measurement methodology to minimize
specific board effects (that is, to compensate for measured board current not caused by the DSP). A benchmark
power consumption test algorithm is listed in
Appendix A
. Use the test algorithm, specific test current
measurements, and the following equation to derive the current-per-MIPS value.
Equation 5:
Where:
I
typF2
I
typF1
F2
F1
=
=
=
=
current at F2
current at F1
high frequency (any specified operating frequency)
low frequency (any specified operating frequency lower than F2)
Note:
F1 should be significantly less than F2. For example, F2 could be 66 MHz and F1 could be 33 MHz. The
degree of difference between F1 and F2 determines the amount of precision with which the current rating
can be determined for an application.
4.4 Input (EXTAL) Jitter Requirements
The allowed jitter on the frequency of
EXTAL
is 0.5 percent. If the rate of change of the frequency of
EXTAL
is slow
(that is, it does not jump between the minimum and maximum values in one cycle) or the frequency of the jitter is
fast (that is, it does not stay at an extreme value for a long time), then the allowed jitter can be 2 percent. The phase
and frequency jitter performance results are valid only if the input jitter is less than the prescribed values.
I
50
10
12
–
×
3.3
×
33
×
10
6
×
5.48
mA
=
=
MIPS
I
MHz
I
typF2
I
typF1
–
(
)
F2
F1
–
(
)
=
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DSP56321VF200 | 24-Bit Digital Signal Processor |
| DSP56321VF220 | 24-Bit Digital Signal Processor |
| DSP56321VF240 | 24-Bit Digital Signal Processor |
| DSP56321VF275 | 24-Bit Digital Signal Processor |
| DSP56321VL200 | 24-Bit Digital Signal Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DSP56321EVM | 功能描述:開發(fā)板和工具包 - 其他處理器 DSP56321EVM RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
| DSP56321EVMUM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DSP56321 EVM User＇s Manual |
| DSP56321FC200 | 制造商:Freescale Semiconductor 功能描述:HIP7 56321 200MHZ DSP - Trays |
| DSP56321FC220 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| DSP56321RMAD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DSP56321 Reference Manual Addendum |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。