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MPC8560CPX667JC датащи(PDF) 69 Page - NXP Semiconductors |
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MPC8560CPX667JC датащи(HTML) 69 Page - NXP Semiconductors |
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69 / 108 page ![]() MPC8560 Integrated Processor Hardware Specifications, Rev. 4.2 Freescale Semiconductor 69 RapidIO Figure 48 shows the definitions of the data to clock static skew parameter tSKEW,PAIR and the data valid window parameter DV. The data and frame bits are those that are associated with the clock. The figure applies for all zero-crossings of the clock. All of the signals are differential signals. VD represents VOD for the transmitter and VID for the receiver. The center of the eye is defined as the midpoint of the region in which the magnitude of the signal voltage is greater than or equal to the minimum DV voltage. Figure 48. Data to Clock Skew Figure 49 shows the definition of the data to data static skew parameter tDPAIR and how the skew parameters are applied. Figure 49. Static Skew Diagram VD Clock x tSKEW,PAIR 1.0 UI Nominal 0.5 UI 0.5 DV 0.5 DV Eye Opening DV VHDmim VHDmim VD = 0 V VD = 0 V VD Clock x D[0:7]/D[8:15], FRAME CLK0 (CLK1) 1.0 UI Nominal 0.5 UI tDPAIR tSKEW,PAIR Center Point for Clock D[0:7]/D[8:15], FRAME Center point of the data valid window of the latest allowed data bit for data grouped late with respect to clock Center point of the data valid window of the earliest allowed data bit for data grouped late with respect to clock |
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