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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC5200B датащи(PDF) 38 Page - Freescale Semiconductor, Inc |
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MPC5200B датащи(HTML) 38 Page - Freescale Semiconductor, Inc |
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38 / 72 page  MPC5200B Data Sheet, Rev. 4 38 Freescale Semiconductor Figure 26. Timing Diagram—ATA-ISOLATION 1.3.10 Ethernet AC Test Timing Conditions: • Output Loading All Outputs: 25 pF Figure 27. Ethernet Timing Diagram—MII Rx Signal Table 30. Timing Specification ata_isolation Sym Description Min Max Units SpecID 1 ata_isolation setup time 7 — IP Bus cycles A8.48 2 ata_isolation hold time — 19 IP Bus cycles A8.49 Table 31. MII Rx Signal Timing Sym Description Min Max Unit SpecID t1 RXD[3:0], RX_DV, RX_ER to RX_CLK setup 10 — ns A9.1 t2 RX_CLK to RXD[3:0], RX_DV, RX_ER hold 10 — ns A9.2 t3 RX_CLK pulse width high 35% 65% RX_CLK Period(1) 1 RX_CLK shall have a frequency of 25% of data rate of the received signal. See the IEEE 802.3 Specification. A9.3 t4 RX_CLK pulse width low 35% 65% RX_CLK Period(1) A9.4 DIOR 2 1 ATA_ISOLATION t4 t3 t1 t2 RX_CLK (Input) RXD[3:0] (inputs) RX_DV RX_ER |
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