MC9S12NE64_06 Datasheet, PDF (347/554 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 12
Ethernet Physical Transceiver (EPHYV2)
12.1 Introduction
The Ethernet physical transceiver (EPHY) is an IEEE 802.3 compliant 10BASE-T/100BASE-TX Ethernet
PHY transceiver. The EPHY module supports both the medium-independent interface (MII) and the MII
management interface. The EPHY requires a 25-MHz crystal for its basic operation.
12.1.1 Features
• IEEE 802.3 compliant
• Full-/half-duplex support in all modes
• Medium-independent interface (MII), which has these characteristics:
— Capable of supporting both 10 Mbps and 100 Mbps data rates
— Data and delimiters are synchronous to clock references
— Provides independent four-bit wide transmit and receive data paths
— Provides a simple management interface
• Supports auto-negotiation
• Auto-negotiation next page ability
• Single RJ45 connection
• 1:1 common transformer
• Baseline wander correction
• Digital adaptive equalization
• Integrated wave-shaping circuitry
• Far-end fault detect
• MDC rates up to 25 MHz
• Supports MDIO preamble suppression
• Jumbo packet
• 2.5 V CMOS
• 2.5 V MII interface
• 125 MHz clock generator and timing recovery
• Loopback modes
MC9S12NE64 Data Sheet, Rev. 1.1
Freescale Semiconductor
347