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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TBD датащи(PDF) 59 Page - Freescale Semiconductor, Inc |
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TBD датащи(HTML) 59 Page - Freescale Semiconductor, Inc |
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59 / 80 page  MSC8144E Quad Core Digital Signal Processor Data Sheet, Rev. 6 Freescale Semiconductor 59 2.7.11 ATM/UTOPIA/POS Timing Table 52 provides the ATM/UTOPIA/POS input and output AC timing specifications. Figure 33 provides the AC test load for the ATM/UTOPIA/POS. Figure 34 shows the ATM/UTOPIA/UTOPIA timing with external clock. Table 52. ATM/UTOPIA/POS AC Timing (External Clock) Specifications Characteristic Symbol Min Max Unit Outputs—External clock delay tUEKHOV 19 ns Outputs—External clock High Impedance tUEKHOX 19 ns Inputs—External clock input setup time tUEIVKH 4ns Inputs—External clock input hold time tUEIXKH 1ns Note: Output specifications are measured from the 50% level of the rising edge of CLKIN to the 50% level of the signal. Timings are measured at the pin. Although the specifications generally reference the rising edge of the clock, these AC timing diagrams also apply when the falling edge is the active edge. Figure 33. ATM/UTOPIA/POS AC Test Load Figure 34. ATM/UTOPIAPOS AC Timing (External Clock) Output Z0 = 50 Ω VDD/2 RL = 50 Ω CLK (input) tUEIXKH tUEIVKH tUEKHOV Input Signals: Output Signals: tUEKHOX |
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