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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8315CVRADDA датащи(PDF) 60 Page - Freescale Semiconductor, Inc |
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MPC8315CVRADDA датащи(HTML) 60 Page - Freescale Semiconductor, Inc |
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60 / 106 page  MPC8315E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2 60 Freescale Semiconductor High-Speed Serial Interfaces (HSSI) Figure 48. Single-Ended Measurement Points for Rise and Fall Time Matching The other detailed AC requirements of the SerDes Reference Clocks is defined by each interface protocol based on application usage. Refer to the following sections for detailed information: • Section 9.5.2, “AC Requirements for SGMII SD_REF_CLK and SD_REF_CLK” • Section 16.2, “AC Requirements for PCI Express SerDes Clocks” 15.2.4.1 Spread Spectrum Clock SD_REF_CLK/SD_REF_CLK are not intended to be used with, and should not be clocked by, a spread spectrum clock source. 15.3 SerDes Transmitter and Receiver Reference Circuits This figure shows the reference circuits for SerDes data lane’s transmitter and receiver. Figure 49. SerDes Transmitter and Receiver Reference Circuits The DC and AC specification of SerDes data lanes are defined in each interface protocol section below (PCI Express or SGMII) in this document based on the application usage: • Section 9.5, “SGMII Interface Electrical Characteristics” • Section 16, “PCI Express” Note that external AC Coupling capacitor is required for the above two serial transmission protocols with the capacitor value defined in specification of each protocol section. SDn_REF_CLK SDn_REF_CLK SDn_REF_CLK SDn_REF_CLK 50 50 Receiver Transmitter TXn TXn RXn RXn 50 50 |
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