MCF5275LCVM133 View Datasheet(PDF) - Freescale Semiconductor
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Description
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MCF5275LCVM133 Datasheet PDF : 44 Pages
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Table 4. MII Mode (continued)
Signal Description
MCF5275 Pin
Collision
Carrier sense
Receive clock
Receive enable
Receive data
Receive error
Management channel clock
Management channel serial data
FECn_COL
FECn_CRS
FECn_RXCLK
FECn_RXDV
FECn_RXD[3:0]
FECn_RXER
FECn_MDC
FECn_MDIO
Design Recommendations
The serial mode interface operates in what is generally referred to as AMD mode. The MCF5275
configuration for seven-wire serial mode connections to the external transceiver are shown in Table 5.
Table 5. Seven-Wire Mode Configuration
Signal Description
Transmit clock
Transmit enable
Transmit data
Collision
Receive clock
Receive enable
Receive data
Unused, configure as PB14
Unused input, tie to ground
Unused, configure as PB[13:11]
Unused output, ignore
Unused, configure as PB[10:8]
Unused, configure as PB15
Input after reset, connect to ground
MCF5275 Pin
FECn_TXCLK
FECn_TXEN
FECn_TXD[0]
FECn_COL
FECn_RXCLK
FECn_RXDV
FECn_RXD[0]
FECn_RXER
FECn_CRS
FECn_RXD[3:1]
FECn_TXER
FECn_TXD[3:1]
FECn_MDC
FECn_MDIO
Refer to the M5275EVBevaluation board user’s manual for an example of how to connect an external
PHY. Schematics for this board are accessible at the MCF5275 site by navigating to:
http://www.freescale.com/coldfire.
5.7.3 BDM
Use the BDM interface as shown in the M5275EVB evaluation board user’s manual. The schematics for
this board are accessible at the MCF5275 site by navigating to: http://www.freescale.com/coldfire.
MCF5275 Integrated Microprocessor Family Hardware Specification, Rev. 2
Freescale Semiconductor
Preliminary—Subject to Change Without Notice
13
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