- 您現在的位置：買賣IC網 > PDF目錄368094 > PPC405CR-3BC266CZ (APPLIEDMICRO INC) PowerPC 405CR Embedded Processor PDF資料下載
參數資料
| 型號： | PPC405CR-3BC266CZ |
| 廠商： | APPLIEDMICRO INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | PowerPC 405CR Embedded Processor |
| 中文描述： | 32-BIT, 266.66 MHz, RISC PROCESSOR, PBGA316 |
| 封裝： | 27 X 27 MM, PLASTIC, EBGA-316 |
| 文件頁數： | 33/42頁 |
| 文件大?。?/td> | 446K |
| 代理商： | PPC405CR-3BC266CZ |
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頁當前第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
PPC405CR – PowerPC 405CR Embedded Processor
Revision 1.02 – January 11, 2005
Data Sheet
AMCC
33
Spread Spectrum Clocking
Care must be taken when using a spread spectrum clock generator (SSCG) with the PPC405CR. This controller
uses a PLL for clock generation inside the chip. The accuracy with which the PLL follows the SSCG is referred to
as tracking skew. The PLL bandwidth and phase angle determine how much tracking skew there is between the
SSCG and the PLL for a given frequency deviation and modulation frequency. When using an SSCG with the
PPC405CR the following conditions must be met:
The frequency deviation must not violate the minimum clock cycle time. Therefore, when operating the
PPC405CR with one or more internal clocks at their maximum supported frequency, the SSCG can only
lower the frequency.
The maximum frequency deviation cannot exceed
3%, and the modulation frequency cannot exceed
40kHz. In some cases, on-board PPC405CR peripherals impose more stringent requirements (see Note 1).
Use the peripheral bus clock (PerClk) for logic that is synchronous to the peripheral bus since this clock
tracks the modulation.
Use the SDRAM MemClkOut since it also tracks the modulation.
Notes:
1. The serial port baud rates are synchronous to the modulated clock. The serial port has a tolerance of approx-
imately 1.5% on baud rate before framing errors begin to occur. The 1.5% tolerance assumes that the
connected device is running at precise baud rates. If an external serial clock is used the baud rate is unaf-
fected by the modulation.
2. IIC operation is unaffected.
Caution:
It is up to the system designer to ensure that any SSCG used with the PPC405CR meets the above
requirements and does not adversely affect other aspects of the system.
相關PDF資料 |
PDF描述 |
|---|---|
| PPC405CR-3KC133C | PowerPC 405CR Embedded Processor |
| PPC405CR-3KC133CZ | PowerPC 405CR Embedded Processor |
| PPC405CR-3KC200C | PowerPC 405CR Embedded Processor |
| PPC405CR-3KC200CZ | PowerPC 405CR Embedded Processor |
| PPC405CR-3KC266C | PowerPC 405CR Embedded Processor |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PPC405CR-3KC133C | 制造商:AppliedMicro 功能描述:MPU 405CR RISC 32-Bit 0.25um 133MHz 3.3V 316-Pin EBGA Tray |
| PPC405CR-3KC133CZ | 制造商:AppliedMicro 功能描述:MPU 405CR RISC 32-Bit 0.25um 133MHz 3.3V 316-Pin EBGA T/R 制造商:AppliedMicro 功能描述:MPU 405CR RISC 32BIT 0.25UM 133MHZ 3.3V 316PIN EBGA - Tape and Reel |
| PPC405CR-3KC200C | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:PowerPC 405CR Embedded Processor |
| PPC405CR-3KC200CZ | 制造商:AppliedMicro 功能描述:MPU 405CR RISC 32BIT 0.25UM 200MHZ 3.3V 316PIN EBGA - Tape and Reel |
| PPC405CR-3KC266C | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:PowerPC 405CR Embedded Processor |
發(fā)布緊急采購，3分鐘左右您將得到回復。