Users Guide | Texas Instruments TMS320DM36X instruction

TMS320DM36x Digital Media System-on-Chip (DMSoC)

Ethernet Media Access Controller (EMAC)

User's Guide

Literature Number: SPRUFI5B

March 2009 –Revised December 2010

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Texas Instruments TMS320DM36X manual Users Guide

Contents

Users Guide Submit Documentation Feedback Mdio Registers Mdio Version Register Version Mdio Control Register Control Appendix B Appendix a List of Figures Transmit Interrupt Mask Set Register Txintmaskset List of Tables MAC Control Register Maccontrol Field Descriptions Read This First Related Documentation From Texas Instruments Related Documentation From Texas Instruments Purpose of the Peripheral Features Emac and Mdio Block Diagram Functional Block Diagram Clock Control Industry Standards Compliance StatementMII Clocking Memory Map Signal DescriptionsMedia Independent Interface MII Connections Signal Type Description Emac and Mdio Signals for MII InterfacePin Multiplexing Ethernet Frame Format Ethernet Protocol OverviewEthernet Frame Description Field Bytes Description Programming Interface Ethernet’s Multiple Access ProtocolPacket Buffer Descriptors Word Field Field Description Basic Descriptor Description Transmit and Receive Descriptor Queues Transmit and Receive Emac Interrupts Example 1. Transmit Buffer Descriptor in C Structure Format Transmit Buffer Descriptor Format Buffer Pointer Next Descriptor PointerBuffer Offset Buffer Length Ownership Owner Flag End of Packet EOP FlagEnd of Queue EOQ Flag Teardown Complete Tdowncmplt Flag Receive Buffer Descriptor Format Receive Buffer Descriptor Format Example 2. Receive Buffer Descriptor in C Structure Format Buffer Length Alignment Error Alignerror Flag Code Error Codeerror FlagCRC Error Crcerror Flag Jabber Flag Internal Memory Emac Control ModuleBus Arbiter CPU Transmit Pulse Interrupt Interrupt ControlReceive Pulse Interrupt Miscellaneous Pulse Interrupt Receive Threshold Pulse InterruptInterrupt Pacing Mdio Module Components Mdio ModuleMdio Clock Generator Global PHY Detection and Link State Monitoring Active PHY Monitoring PHY Register User AccessMdio Module Operational Overview Writing Data To a PHY Register Initializing the Mdio ModuleReading Data From a PHY Register Example 3. Mdio Register Access Macros Example of Mdio Register Access Code Emac Module Components Emac ModuleReceive DMA Engine Receive Fifo MAC Receiver Clock and Reset LogicReceive Address Transmit DMA Engine Emac Module Operational Overview Data Reception Media Independent Interface MIIReceive Control Receive Inter-Frame Interval Ieee 802.3x-Based Receive Buffer Flow Control Collision-Based Receive Buffer Flow Control CRC Insertion Transmit ControlAdaptive Performance Optimization APO Interpacket-Gap IPG Enforcement Speed, Duplex, and Pause Frame Support Transmit Flow Control Packet Receive Operation Receive DMA Host ConfigurationReceive Channel Enabling Hardware Receive QOS Support Receive Address Matching Receive Channel Teardown Host Free Buffer TrackingReceive Frame Classification Receive Frame Treatment Summary Promiscuous Receive ModeReceive Frame Treatment Middle of Frame Overrun Treatment Receive OverrunMiddle of Frame Overrun Treatment Packet Transmit Operation Transmit DMA Host ConfigurationReceive and Transmit Latency Transmit Channel Teardown Software Reset Considerations Reset ConsiderationsTransfer Node Priority Initialization Hardware Reset ConsiderationsEnabling the EMAC/MDIO Peripheral Emac Control Module Initialization Example 4. Emac Control Module Initialization Code Example 5. Mdio Module Initialization Code Mdio Module Initialization Emac Module Initialization Emac Module Interrupt Events and Requests Interrupt SupportReceive Threshold Interrupts Transmit Packet Completion Interrupts Receive Packet Completion Interrupts Statistics Interrupt Host Error Interrupt Mdio Module Interrupt Events and Requests User Access Completion InterruptLink Change Interrupt Proper Interrupt Processing Emulation Considerations Power ManagementEmulation Control Soft Free Description Slave Vbus Emac Control Module RegistersAcronym Register Description Bit Field Value Description Softreset Emac Control Module Software Reset Register CmsoftresetEmac Control Module Emulation Control Register Cmemcontrol Soft Free Intpaceen Emac Control Module Interrupt Control Register CmintctrlIntprescale Rxpulseen Rxthreshen Txpulseen Bit Field Statpendinten Hostpendinten Linkinten UserintenStatpendinten Rxpulseinttstat Rxthreshinttstat 31-8 Reserved TXPULSEINTTSTATn Txpulseinttstat Statpendintstat Statpendintstat Hostpendintstat Linkintstat Userintstat Tximax Rximax Management Data Input/Output Mdio Registers Mdio Version Register VersionMdio Version Register Version Field Descriptions Mdio Control Register Control Field Descriptions Mdio Control Register Control PHY Link Status Register Link PHY Acknowledge Status Register AlivePHY Acknowledge Status Register Alive Field Descriptions PHY Link Status Register Link Field Descriptions 31-2 Reserved Will clear the event and writing a 0 has no effect No Mdio user command complete event USERINTMASKED0 and USERINTMASKED1 correspond to USERACCESS0 W1S-0 Mdio User Command Complete Interrupt Mask Clear Register Mdio User Command Complete Interrupt Mask Clear Register Mdio User Access Register 0 USERACCESS0 Field Descriptions Mdio User Access Register 0 USERACCESS0 Linksel Linkintenb Mdio User PHY Select Register 0 USERPHYSEL0Phyadrmon Linksel Mdio User Access Register 1 USERACCESS1 Field Descriptions Mdio User Access Register 1 USERACCESS1 Mdio User PHY Select Register 1 USERPHYSEL1 Mdio User PHY Select Register 1 USERPHYSEL1 Ethernet Media Access Controller Emac Registers Offset Acronym Register Description Network Statistics Registers Transmit Control Register Txcontrol Transmit Identification and Version Register TxidverTransmit Control Register Txcontrol Field Descriptions Transmit Teardown Register Txteardown Field Descriptions Transmit Teardown Register TxteardownTxtdnch Rxident Receive Identification and Version Register RxidverRxmajorver Rxminorver Rxmajorver Receive Teardown Register Rxteardown Receive Control Register RxcontrolReceive Control Register Rxcontrol Field Descriptions Receive Teardown Register Rxteardown Field Descriptions TX7PEND Transmit Interrupt Status Unmasked Register Txintstatraw Transmit Interrupt Status Masked Register Txintstatmasked Transmit Interrupt Status Masked Register Txintstatmasked TX7MASK Transmit Interrupt Mask Set Register Txintmaskset Transmit Interrupt Mask Clear Register Txintmaskclear Transmit Interrupt Mask Clear Register Txintmaskclear MAC End Of Interrupt Vector Register Maceoivector MAC Input Vector Register MacinvectorMAC Input Vector Register Macinvector Field Descriptions Statpend RX7PEND Receive Interrupt Status Unmasked Register Rxintstatraw Receive Interrupt Status Masked Register Rxintstatmasked Receive Interrupt Status Masked Register Rxintstatmasked RX7MASK Receive Interrupt Mask Set Register Rxintmaskset Receive Interrupt Mask Clear Register Rxintmaskclear Receive Interrupt Mask Clear Register Rxintmaskclear MAC Interrupt Status Masked Register Macintstatmasked MAC Interrupt Status Unmasked Register MacintstatrawHostpend Statpend MAC Interrupt Mask Clear Register Macintmaskclear MAC Interrupt Mask Set Register MacintmasksetHostmask Statmask Hostmask Rxcmfen Rxpasscrc Rxqosen RxnochainRxcsfen Rxcefen Rxcafen Rxpromch Frames containing errors are filtered Receive multicast channel select RXCH7EN Receive Unicast Enable Set Register Rxunicastset Receive Unicast Clear Register Rxunicastclear Receive Unicast Clear Register Rxunicastclear Receive Buffer Offset Register Rxbufferoffset Receive Maximum Length Register RxmaxlenReceive Maximum Length Register Rxmaxlen Field Descriptions Rxfilterthresh Receive Channel 0-7 Free Buffer Count Register RXnFREEBUFFER MAC Control Register Maccontrol Field Descriptions MAC Control Register Maccontrol Rxbufferflowen TxflowenLoopback Fullduplex MAC Status Register Macstatus Field Descriptions MAC Status Register Macstatus Rxqosact Fifo Control Register Fifocontrol Emulation Control Register EmcontrolEmulation Control Register Emcontrol Field Descriptions Fifo Control Register Fifocontrol Field Descriptions Soft Reset Register Softreset MAC Configuration Register MacconfigMAC Configuration Register Macconfig Field Descriptions Soft Reset Register Softreset Field Descriptions MAC Source Address High Bytes Register Macsrcaddrhi MAC Source Address Low Bytes Register Macsrcaddrlo MAC Hash Address Register 2 MACHASH2 MAC Hash Address Register 1 MACHASH1MAC Hash Address Register 1 MACHASH1 Field Descriptions MAC Hash Address Register 2 MACHASH2 Field Descriptions Transmit Pacing Algorithm Test Register Tpacetest Back Off Test Register BofftestBack Off Test Register Bofftest Field Descriptions Transmit Pause Timer Register Txpause Receive Pause Timer Register RxpauseReceive Pause Timer Register Rxpause Field Descriptions Transmit Pause Timer Register Txpause Field Descriptions MAC Address Low Bytes Register Macaddrlo Field Descriptions MAC Address Low Bytes Register MacaddrloValid Matchfilt Channel MACADDR0 MACADDR1 Valid MAC Index Register Macindex MAC Address High Bytes Register MacaddrhiMAC Index Register Macindex Field Descriptions MACADDR2 MACADDR3 MACADDR4 MACADDR5 TXnHDP Receive Channel 0-7 Completion Pointer Register RXnCP Transmit Channel 0-7 Completion Pointer Register TXnCP Good Receive Frames Register Rxgoodframes Network Statistics RegistersBroadcast Receive Frames Register Rxbcastframes Multicast Receive Frames Register Rxmcastframes Receive Alignment/Code Errors Register Rxaligncodeerrors Receive CRC Errors Register RxcrcerrorsPause Receive Frames Register Rxpauseframes Receive Oversized Frames Register Rxoversized Receive Undersized Frames Register Rxundersized Receive Jabber Frames Register RxjabberReceive Frame Fragments Register Rxfragments Filtered Receive Frames Register Rxfiltered Receive Octet Frames Register Rxoctets Receive QOS Filtered Frames Register RxqosfilteredGood Transmit Frames Register Txgoodframes Broadcast Transmit Frames Register Txbcastframes Deferred Transmit Frames Register Txdeferred Pause Transmit Frames Register TxpauseframesTransmit Collision Frames Register Txcollision Transmit Single Collision Frames Register Txsinglecoll Transmit Carrier Sense Errors Register Txcarriersense Transmit Underrun Error Register TxunderrunTransmit Late Collision Frames Register Txlatecoll Transmit Octet Frames Register Txoctets Submit Documentation Feedback Receive DMA Overruns Register Rxdmaoverruns Network Octet Frames Register Netoctets Appendix a Glossary Term Definition Physical Layer Definitions Reference Additions/Modifications/Deletions Document Revision History DSP Products ApplicationsRfid