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MPC8347ECVRADDB 数据表(PDF) 33 Page - Freescale Semiconductor, Inc |
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MPC8347ECVRADDB 数据表(HTML) 33 Page - Freescale Semiconductor, Inc |
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33 / 99 page  MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 12 Freescale Semiconductor 33 Ethernet: Three-Speed Ethernet, MII Management 8.3.2 MII Management AC Electrical Specifications Table 34 provides the MII management AC timing specifications. Input high current IIH VIN 1 = LV DD —10 μA Input low current IIL VIN = LVDD –15 — μA Note: 1. The symbol VIN, in this case, represents the LVIN symbol referenced in Table 1 and Table 2. Table 33. MII Management DC Electrical Characteristics Powered at 3.3 V Parameter Symbol Conditions Min Max Unit Supply voltage (3.3 V) LVDD — 2.97 3.63 V Output high voltage VOH IOH = –1.0 mA LVDD = Min 2.10 LVDD +0.3 V Output low voltage VOL IOL = 1.0 mA LVDD = Min GND 0.50 V Input high voltage VIH —2.00 — V Input low voltage VIL — — 0.80 V Input high current IIH LVDD = Max VIN 1 = 2.1 V — 40 μA Input low current IIL LVDD = Max VIN = 0.5 V –600 — μA Note: 1. The symbol VIN, in this case, represents the LVIN symbol referenced in Table 1 and Table 2. Table 34. MII Management AC Timing Specifications At recommended operating conditions with LVDD is 3.3 V ± 10% or 2.5 V ± 5%. Parameter/Condition Symbol1 Min Typ Max Unit Notes MDC frequency fMDC —2.5 — MHz 2 MDC period tMDC —400 — ns — MDC clock pulse width high tMDCH 32 — — ns — MDC to MDIO delay tMDKHDX 10 — 70 ns 3 MDIO to MDC setup time tMDDVKH 5— — ns — MDIO to MDC hold time tMDDXKH 0— — ns — MDC rise time tMDCR — — 10 ns — Table 32. MII Management DC Electrical Characteristics Powered at 2.5 V (continued) Parameter Symbol Conditions Min Max Unit |
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