AN2692 Freescale Semiconductor / Motorola, AN2692 Datasheet - Page 16

• Manufacturer Part Number: AN2692
• Description: MC9S12NE64 Integrated Ethernet Controller
• Manufacturer: Freescale Semiconductor / Motorola

MC9S12NE64 Ethernet Media Access Controller (EMAC)
The following EMAC options are described in this section:
Network Control Register (NETCTL)
The network control (NETCTL) register is used mainly to enable the EMAC module and set duplex mode.
Figure 10
16
RAM
INTERFACE
SIGNALS
RAM
INTERFACE
SIGNALS
IP BUS
SIGNALS
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•
•
•
•
•
•
Network control
MAC hardware address
Address filtering mode
Ethertype filtering
Ethernet buffer configuration
Multicast hash table
Flow control
shows the NETCTL register.
EMAC
MAC FLOW CONTROL
RX BUFFER A
RX BUFFER B
MC9S12NE64 Integrated Ethernet Controller, Rev. 0.2
INTERFACE
INTERFACE
INTERFACE
TX BUFFER
REGISTER
IP BUS
Figure 9. EMAC Block Diagram
MANAGEMENT
TRANSMITTER
RECEIVER
MII
Freescale Semiconductor
MII
MII_RXCLK
MII_RXDV
MII_RXD[3:0]
MII_RXER
MII_TXCLK
MII_TXEN
MII_TXD[3:0]
MII_TXER
MII_CRS
MII_COL
MII_MDC
MII_MDIO