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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8544EBVTARG датащи(PDF) 32 Page - Freescale Semiconductor, Inc |
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MPC8544EBVTARG датащи(HTML) 32 Page - Freescale Semiconductor, Inc |
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32 / 120 page  MPC8544E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 3 32 Freescale Semiconductor Enhanced Three-Speed Ethernet (eTSEC), MII Management Timing diagrams for FIFO appear in Figure 11 and Figure 12. Figure 11. FIFO Transmit AC Timing Diagram Figure 12. FIFO Receive AC Timing Diagram 8.5.2 GMII AC Timing Specifications This section describes the GMII transmit and receive AC timing specifications. 8.5.2.1 GMII Transmit AC Timing Specifications Table 30 provides the GMII transmit AC timing specifications. Table 30. GMII Transmit AC Timing Specifications At recommended operating conditions with L/TVDD of 3.3 V ± 5% or 2.5 V ± 5% Parameter/Condition Symbol1 Min Typ Max Unit Notes GTX_CLK clock period tGTX —8.0 — ns — GTX_CLK to GMII data TXD[7:0], TX_ER, TX_EN delay tGTKHDX 0.2 — 5.0 ns 2 GTX_CLK data clock rise time (20%-80%) tGTXR —— 1.0 ns — tFITF TXD[7:0] TX_EN GTX_CLK TX_ER tFITDV tFITR tFITH tFIT tFITDX tFIRF tFIRR RX_CLK RXD[7:0] RX_DV RX_ER Valid Data tFIRDX tFIRDV tFIRH tFIR |
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