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PPC440SPE-RNB533C 数据表(PDF) 64 Page - Applied Micro Circuits Corporation |
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PPC440SPE-RNB533C 数据表(HTML) 64 Page - Applied Micro Circuits Corporation |
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64 / 80 page  PowerPC 440SPe Embedded Processor 64 AMCC Proprietary Revision 1.23 - Sept 21, 2006 Preliminary Data Sheet • For PCI-X and PCI 66 the maximum spread spectrum is -1% modulated between 30kHz and 33kHz. • For PCI Express, the maximum spread spectrum is -0.5%, modulated between 30kHz and 33kHz. The ports on the two ends of a link must transmit data at a rate that is within 600 parts per million (ppm) of each other at all times. This is specified to allow bit rate clock sources with a +/- 300 ppm tolerance. 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 PPC440SPe meets the above requirements and does not adversely affect other aspects of the system. |
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