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Introduction

1.4Industry Standard(s) Compliance Statement

The EMAC peripheral conforms to the IEEE 802.3 standard, describing the “CarrierSense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer” specifications. ISO / IEC has also adopted the IEEE 802.3 standard and re-designated it as ISO/IEC 8802-3:2000(E).

In difference from this standard, the EMAC peripheral integrated with the C645x devices does not use the transmit coding error signal MTXER. Instead of driving the error pin when an underflow condition occurs on a transmitted frame, the EMAC intentionally generates an incorrect check sum by inverting the frame CRC so that the network will detect the transmitted frame as an error.

SPRU975B –August 2006

Ethernet Media Access Controller (EMAC)/Management Data Input/Output (MDIO)

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Texas Instruments TMS320C645x DSP manual Industry Standards Compliance Statement