- 您现在的位置：买卖IC网 > PDF目录224791 > PPC440GR-3BB533CZ (APPLIEDMICRO INC) 32-BIT, 533 MHz, RISC PROCESSOR, PBGA456 PDF资料下载
参数资料
| 型号： | PPC440GR-3BB533CZ |
| 厂商： | APPLIEDMICRO INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 533 MHz, RISC PROCESSOR, PBGA456 |
| 封装： | 35 X 35 MM, PLASTIC, BGA-456 |
| 文件页数： | 66/88页 |
| 文件大小： | 1177K |
| 代理商： | PPC440GR-3BB533CZ |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页当前第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页
AMCC Proprietary
69
440GR – PPC440GR Embedded Processor
Preliminary Data Sheet
Revision 1.19 – May 07, 2008
Spread Spectrum Clocking
Care must be taken when using a spread spectrum clock generator (SSCG) with the PPC440GR. 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
PPC440GR the following conditions must be met:
The frequency deviation must not violate the minimum clock cycle time. Therefore, when operating the
PPC440GR 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 PPC440GR peripherals impose more stringent requirements.
Use the Peripheral Bus Clock for logic that is synchronous to the peripheral bus since this clock tracks the
modulation.
Use the DDR 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
approximately 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.
2. Ethernet operation is unaffected.
3. IIC operation is unaffected.
Important:
It is up to the system designer to ensure that any SSCG used with the PPC440GR meets the above
requirements and does not adversely affect other aspects of the system.
相关PDF资料 |
PDF描述 |
|---|---|
| PPC440GRX-STA400TZ | 32-BIT, 400 MHz, RISC PROCESSOR, PBGA680 |
| PPCM08DNNNN920 | 8 CONTACT(S), PLASTIC, MALE, CIRCULAR CONNECTOR, CRIMP, PLUG |
| PRAF06ANNNN91502 | 6 CONTACT(S), ALUMINUM ALLOY/COPPER ALLOY/COPPER-ZINC ALLOY, CIRCULAR CONNECTOR, CRIMP |
| PRAF06ANNNN915 | 6 CONTACT(S), ALUMINUM ALLOY/COPPER ALLOY/COPPER-ZINC ALLOY, CIRCULAR CONNECTOR, CRIMP |
| PRAF08ANNNN91502 | 8 CONTACT(S), ALUMINUM ALLOY/COPPER ALLOY/COPPER-ZINC ALLOY, CIRCULAR CONNECTOR, CRIMP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PPC440GR-3JA333C | 制造商:AppliedMicro 功能描述: |
| PPC440GR-3JA400C | 制造商:AppliedMicro 功能描述: |
| PPC440GR-3JA533C | 制造商:AppliedMicro 功能描述: |
| PPC440GR-3JA667C | 制造商:AppliedMicro 功能描述: |
| PPC440GR-3JB333C | 制造商:AppliedMicro 功能描述: |
发布紧急采购，3分钟左右您将得到回复。