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MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1 28 Freescale Semiconductor Ethernet Interface and MII Management 8.2 FIFO, GMII, MII, TBI, RGMII, RMII, and RTBI AC Timing Specifications The AC timing specifications for FIFO, GMII, MII, TBI, RGMII, RMII and RTBI are presented in this section. 8.2.1 FIFO AC Specifications The basis for the AC specifications for the eTSEC’s FIFO modes is the double data rate RGMII and RTBI specifications, since they have similar performance and are described in a source-synchronous fashion like FIFO modes. However, the FIFO interface provides deliberate skew between the transmitted data and source clock in GMII fashion. Input high current (VIN = LVDD, VIN = TVDD) IIH —40 μA 1, 2, 3 Input low current (VIN = GND) IIL –600 — μA3 Notes: 1. LVDD supports eTSECs 1 and 2. 2. TVDD supports QE UCC1 and UCC2 ethernet ports. 3. The symbol VIN, in this case, represents the LVIN and TVIN symbols referenced in Table 2 and Table 3. Table 24. GMII, MII, RMII, RGMII, RTBI, TBI and FIFO DC Electrical Characteristics Parameters Symbol Min Max Unit Notes Supply voltage 2.5 V LVDD/TVDD 2.37 2.63 V 1, 2 Output high voltage (LVDD/TVDD = Min, IOH = –1.0 mA) VOH 2.00 LVDD/TVDD + 0.3 V — Output low voltage (LVDD/TVDD = Min, IOL = 1.0 mA) VOL GND – 0.3 0.40 V — Input high voltage VIH 1.70 LVDD/TVDD + 0.3 V — Input low voltage VIL –0.3 0.70 V — Input high current (VIN = LVDD, VIN = TVDD) IIH —10 μA1, 2, 3 Input low current (VIN = GND) IIL –15 — μA3 Note: 1. LVDD supports eTSECs 1 and 2. 2. TVDD supports QE UCC1 and UCC2 ethernet ports. 3. Note that the symbol VIN, in this case, represents the LVIN and TVIN symbols referenced in Table 2 and Table 3. Table 23. GMII, MII, RMII, and TBI DC Electrical Characteristics (continued) Parameter Symbol Min Max Unit Notes |
