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MC9S12NE64V1 Datasheet, PDF (347/554 Pages) Freescale Semiconductor, Inc – MC9S12NE64V1 Data Sheet | |||
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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:
â Capable of supporting both 10 Mbps and 100 Mbps data rates
â Data and delimiters are synchronous to clock references
â Provides independent four-bit wide transmit and receive data paths
â 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
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