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參數(shù)資料
| 型號： | IBM25PPC970FX6UB267ET |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 64-BIT, 1800 MHz, RISC PROCESSOR, CBGA576 |
| 封裝： | 25 X 25 MM, 1 MM PITCH, CERAMIC, BGA-576 |
| 文件頁數(shù)： | 63/78頁 |
| 文件大?。?/td> | 3524K |
| 代理商： | IBM25PPC970FX6UB267ET |
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Datasheet
PowerPC 970FX RISC Microprocessor
System Design Information
Page 66 of 78
Version 2.5
March 26, 2007
5.3 PLL Power Supply Filtering
The PowerPC 970FX microprocessor has a separate AVDD pin that provides power to the clock generation
PLL.
To ensure stability of the internal clock, filter the power supplied to the AVDD PLL using a circuit similar to
Figure 5-1. To ensure that the capacitor filters out as much noise as possible, the capacitor should be placed
as close as possible to the AVDD and ANALOG_GND pins. The capacitor used should have minimal induc-
tance. The ferrite bead shown in Figure 5-1 should supply an impedance of less than 70
Ω in the 100 - 500
MHz region.
Note: AVDD measured at the pins of the part should never be more than 50 mV lower than the AVDD voltage
range specified in Table 3-2 Recommended Operating Conditions on page 21.
Figure 5-1. PLL Power Supply Filter Circuit
2
Ω
Ferrite Bead
AVDD post filter (see previous note about AVDD.)
AVDD Power Supply Filter Circuit
C2
C1
ANALOG_GND Pin1
AVDD Pin
Item
Description/Value
Resistor
2
Ω
C1
0.1
μF X7R
C2
10.0
μF Y5V
Ferrite Bead
Murata BLM21P300SN1 or similar
Notes:
1. Connected to analog ground without a filter.
AVDD
Regulator
AVDD
Discrete Resistor
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IBM25PPC970FX6UB429RT | 制造商:IBM Microelectronics 功能描述:MPU 970FX RISC 64BIT 90NM 1.5V 576CBGA - Trays 制造商:IBM 功能描述:IBM IBM25PPC970FX6UB429RT Co-Processors |
| IBM25PPC970GX7TR01-ET | 制造商:IBM 功能描述:ANTARES GX DD1.0X 1.2GHZ POWER OPTIMIZED - Trays |
| IBM25PPC970GX7TR05-ET | 制造商:IBM 功能描述:ANTARES GX DD1.0X 1.4GHZ POWER OPTIMIZED - Trays |
| IBM25PPC970GX7TR20-ET | 制造商:IBM Microelectronics 功能描述:ANTARES GX DD1.0X 1.6GHZ POWER OPTIMIZED - Trays |
| IBM25PPC970GX7TR23-ET | 制造商:IBM 功能描述:ANTARES GX DD1.0X 1.6GHZ PERFORMANCE OPTIMIZED - Trays |
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