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參數(shù)資料
| 型號： | MSC8152TVT1000B |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | RISC PROCESSOR, PBGA783 |
| 封裝： | 29 X 29 MM, LEAD FREE, PLASTIC, FCBGA-783 |
| 文件頁數(shù)： | 53/68頁 |
| 文件大?。?/td> | 907K |
| 代理商： | MSC8152TVT1000B |
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Hardware Design Considerations
MSC8152 Dual-Core Digital Signal Processor Data Sheet, Rev. 1
Freescale Semiconductor
57
.
Each SerDes PLL power supply must be filtered using a circuit similar to the one shown in Figure 38, to ensure stability of the
internal clock. For maximum effectiveness, the filter circuit should be placed as closely as possible to the SRn_PLL_AVDD ball
to ensure it filters out as much noise as possible. The ground connection should be near the SRn_PLL_AVDD ball. The 0.003
μF
capacitor is closest to the ball, followed by the two 2.2
μF capacitors, and finally the 1 Ω resistor to the board supply plane. The
capacitors are connected from SRn_PLL_AVDD to the ground plane. Use ceramic chip capacitors with the highest possible
self-resonant frequency. All trances should be kept short, wide, and direct.
3.3
Clock and Timing Signal Board Layout Considerations
When laying out the system board, use the following guidelines:
Keep clock and timing signal paths as short as possible and route with 50
Ω impedance.
Use a serial termination resistor placed close to the clock buffer to minimize signal reflection. Use the following
equation to compute the resistor value:
Rterm = Rim – Rbuf
where Rim = trace characteristic impedance
Rbuf = clock buffer internal impedance.
Figure 37. PLL Supplies
Figure 38. SerDes PLL Supplies
MSC8156E
PLL0_AVDD
R
C1
C2
PLL1_AVDD
R
C1
C2
PLL2_AVDD
R
C1
C2
VDD Power Rail
(Voltage Regulator)
VSS
1
Ω
2.2
μF
2.2
μF
0.003
μF
SRn_PLL_AVDD
SRn_PLL_AGND
as short as possible
GNDSXC
VDDSXC
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MSC8154 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Quad-Core Digital Signal Processor |
| MSC8154_11 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Quad-Core Digital Signal processor |
| MSC8154E | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Quad-Core Digital Signal Processor with Security |
| MSC8154E_11 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Quad-Core Digital Signal Processor with Security |
| MSC8154ESVT1000B | 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC DSP StarCore 6-cores RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT |
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