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MPC8572ECVTATLD 数据表(PDF) 44 Page - Freescale Semiconductor, Inc |
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MPC8572ECVTATLD 数据表(HTML) 44 Page - Freescale Semiconductor, Inc |
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44 / 140 page ![]() MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4 44 Freescale Semiconductor Ethernet: Enhanced Three-Speed Ethernet (eTSEC) 8.3.3 SGMII Transmitter and Receiver DC Electrical Characteristics Table 37 and Table 38 describe the SGMII SerDes transmitter and receiver AC-Coupled DC electrical characteristics. Transmitter DC characteristics are measured at the transmitter outputs (SD2_TX[n] and SD2_TX[n]) as depicted in Figure 23. Table 37. SGMII DC Transmitter Electrical Characteristics Parameter Symbol Min Typ Max Unit Notes Supply Voltage XVDD_SRDS2 1.045 1.1 1.155 V — Output high voltage VOH — — XVDD_SRDS2-Typ/2 + |VOD|-max/2 mV 1 Output low voltage VOL XVDD_SRDS2-Typ/2 - |VOD|-max/2 —— mV 1 Output ringing VRING —— 10 % — Output differential voltage2, 3, 5 |VOD| 359 550 791 mV Equalization setting: 1.0x 329 505 725 Equalization setting: 1.09x 299 458 659 Equalization setting: 1.2x 270 414 594 Equalization setting: 1.33x 239 367 527 Equalization setting: 1.5x 210 322 462 Equalization setting: 1.71x 180 275 395 Equalization setting: 2.0x Output offset voltage VOS 473 550 628 mV 1, 4 Output impedance (single-ended) RO 40 — 60 Ω — Mismatch in a pair RO —— 10 % — Change in VOD between “0” and “1” |VOD|— — 25 mV — Δ Δ |
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