Hello, and welcome to this presentation of the stm32. The configuration and management functions can take place either inband or outofband. Management data inputoutput, or mdio, is a standarddriven, dedicatedbus approach thats specified in ieee rfc802. Use the mdio bus to interrogate complex devices electronic. The mdio interface is described in phy interface signals in chapter2. Ps ethernet gem3 connected to a 1g physical interface in ps through an mio interface. Precision analog microcontroller, 14 bit analog io with. Mdio interface can support up to a maximum of 65,536 registers in each mmd. How do i access an external phy using mdio interface. Besides the data interface, a twowire management interface mdio is defined to connect mac devices with phy devices providing a standardized access method to internal registers of phy devices. Feature summary parameterized axi4 slave interface based on the axi4 or axi4lite specification for. Precision analog microcontroller, 14bit analog inputoutput with mdio interface, arm cortexm3 data sheet aducm320 rev. Provides related information or information of special importance.
Mdios configure each phy before operation and monitor link status during operation. The members of the msa have authored this document to provide an industry standard form factor. I want to access the registers of this device from the user space. The mii connects media access control mac devices with ethernet physical layer phy circuits. D document feedback information furnished by analog devices is believed to.
Sub20 is a versatile and efficient bridge device providing simple interconnect between pc usb host and different hw devices and systems via popular interfaces such as i2c, spi, mdio, rs232, rs485. Ethernet phy configuration using mdio for industrial. The mdio interface is a simple, twowire, serial interface, clock and data. To download the library, you must be a registered user. The mii management interface also referred to as mdio interface provides a 2wire serial interface between a host processor or mac also known as. Mdio management data inputoutput 21 mdio management data inputoutput provides a bidirectional management interface for the phys and macs to communicate with each other.
Ethernet phy configuration using mdio for industrial applications 1 phy selection and connection. For most pluggable optical transceivers the interface used for monitor and control is the i2c interface. This application note describes the external mdio interface and how to access an external mmd through the interface. Mdio history1 management data inputoutput, or mdio, is a twowire serial control bus used to manage physicallayer devices phys in media access controllers macs inside gigabit ethernet equipment which requires accessing and modifying their var ious registers. Precision analog microcontroller, 14bit analog input.
When tsbar is high, the device allows the pullup to be connected to the io port that has the power. This multisource agreement msa defines the form factor of an optical transceiver to support 40gbits and 100gbits interfaces for ethernet, telecommunication and other applications. This application note describes the external management data inputoutput mdio interface of mb8aa3020 and how to access mdio manageable device mmd that is connected to mb8aa3020 through the interface. The gigabit mediaindependent interface gmii is an interface between the medium access control mac device and the physical layer. Aducm320 precision analog microcontroller components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other electronic components such as resistors, capacitors, transistors and diodes.
Precision analog microcontroller, analog io with mdio. They configure each phy before operation and monitor link status during operation. Table 453pmapmd registers register address register name 1. Mac interface serial management interface clock interface gpio and led interface mediadependent interface power and ground pins other pins. Psoc creator component datasheet mdio interface features. Information sufficient to to design an mdio state machine can be found in the lxt972m datasheet, 5. At the time of writing, the mdiopthdx module can be used with either a prism sound atlas or prism sound titan interface unit. When enabled, the mdios monitors the mdio interface for an incoming preamble. Indicates potential damage to hardware or software, or loss of data. The mdio interface component supports the management data inputoutput, which is a serial bus defined for the ethernet family of ieee 802. Mb8aa3020 application note procedures for external mdio.
The transceiver is rohs6 compliant and leadfree per directive. Precision analog microcontroller, 14bit analog inputoutput. Download the bitstream to the board with device configuration. Management interfaces for micrel switches windows is a registered tr. Rgmii interface timing budgets robertrodrigues abstract rgmii interface timing budgets is intended to serve as a guideline for developing a timing budget when using the rgmii v1. When multiple mdiomanaged ports appear on the same bus, this address can be used to address, machines optional for virtex5 fpgas ucf ieee 802. Mdio management data inputoutput interface over mdcmdio lines. Management data inputoutput mdio, also known as serial management interface smi or media independent interface management miim, is a serial bus defined for the ethernet family of ieee 802. Copenhagen, denmark sept 1719, 2001 may 4, 2000ieee p802. For the sake of simplicity, this document will refer to prism sound atlas as meaning any unit that can be fitted with an mdiopthdx module, unless there are. The reference design provides the following interfaces. The station management entity 110 can be configured to control overall operation andor configuration of the mdio bus interface 100. Ethernet phy register access with gpio, application note xilinx.
The miim is also known as the mdiomdc interface and is typically supported by ethernet phy products industry wide. The interface operates at speeds up to mbits, implemented using a data interface clocked at 125 mhz with separate eightbit data paths for receive and transmit, and is. Sub20 multi interface usb adapter usb to i2c spi gpio. Click the download reference design button to complete the registration steps. Sub20 is a low cost usb adapter with comprehensive and mutually convertible set of interfaces.
Precision analog microcontroller, 14 bit analog io with mdio interface, arm cortex m3 data sheet aducm320i rev. The usb2mdio tool includes a launchpad development kit for. Ps and plbased 1g10g ethernet solution application note. The parallel interface can be configured for gmii, rgmii, tbi, rtbi, or 10100 mii, while the serial interface can be configured for 1. Chapter 1 overview the gmii to rgmii ip core provides the reduced gigabit media independent interface rgmii between ethernet physical media. Some users may wish to use the mdio interface, and others may not.
The ps gem block can be accessed through the pl using emio pins that allow gmii and management data inputoutput mdio interfaces to be connected to the physical layer. Data sheet ar8035 integrated 10100 gigabit ethernet. While communicating on the mdio bus 112, the mdio module 120 may support an mdio clause 45 e. This multisource agreement msa defines the form factor of an optical transceiver to support 40gbits and 100gbits interfaces for. How to access non ethernet phy device register over mdio. Once synchronized, the 32bit preamble is required after any received frame. Precision analog microcontroller, 14bit analog io with mdio interface, arm cortexm3 data sheet aducm320i rev. Digital diagnostics functions are available via the mdio interface, as specified by the cfp msa and finisar application note an20805. Management data inputoutput, or mdio, is a 2wire serial bus that is used to manage phys or physical layer devices in media access controllers macs in gigabit ethernet equipment. Use the mdio interface component in a phy management interface to read and write the phy control and status registers. Rtl8201fvbcg datasheet pdf 8 page realtek semiconductor corp. Besides the data interface, a twowire management interface. The two lines include the mdc line management data clock, and the mdio line management data inputoutput.
Many of the functions of the phy are performed autonomously. Mb8aa3020 supports two external mdio interfaces to access phy registers outside the chip. The component can be configured to generate an interrupt for any frame received from the mdio bus. Every ethernet frame contains both a source and destination address, both of which are mac addresses. Mdio master core for actel fpgas product brief version 1. Ethernet phy configuration using mdio for industrial applications. Description singlechipport 10100m ethernet phyceiver.
Tampa, fl november 69, 2000 may 4, 2000mdio issues v1. A document feedback information furnished by analog devices is believed to be. For example, the station management entity 110 can initiate communications in the mdio bus interface 100, and is responsible for driving a management data clock on the management data clock signal line 150. D document feedback information furnished by analog devices is believed to be accurate and reliable. The management of these phys is based on the access and modification of their various registers. The usb2mdio tool includes a launchpad development kit for tis msp430 mcus that is interfaced with a lightweight gui. Mdio history1 management data inputoutput, or mdio, is a twowire serial control bus used to manage physicallayer devices. Management data inputoutput mdio, also known as serial management interface smi or. Pdf ds835 verilog code for mdio protocol virtex6 ml605 user guide zynq axi ethernet software example vhdl code for ethernet mac spartan 3 verilog code for 10 gb ethernet axi wrapper fpga frame buffer vhdl examples sgmii mode sfp example ml605 ethernet. Web to pdf convert any web pages to highquality pdf files while retaining page layout, images, text.
Psoc creator component datasheet mdio interface document number. The design features preamble pattern selection through the input port, and can be used to offload the. For the sake of simplicity, this document will refer to prism sound atlas. On the download 10gbps ethernet reference design page, click download to save the compressed file to your working directory. Max24287 1gbps paralleltoserial mii converter general description the max24287 is a flexible, lowcost ethernet interface conversion ic. So mdio is needed to exchange information in parallel to the phymac data interface. Sub20 multi interface usb adapter usb to i2c spi gpio rs232. The parallel interface can be configured for gmii, rgmii, tbi, rtbi, or 10100 mii, while the serial interface. Standard 4bit interface between the mac and the phy for communicating tx and rx frame data.
The mdio interface is implemented by two pins, an mdio pin and a management data clock mdc pin. I have a non ethernet phy device connected to the mdio bus. The designs described in this application note are listed below. Tms320c6000 dsp ethernet media access controller emac management data inputoutput mdio, controller emac and physical layer phy device management data inputoutput. Max24287 1gbps paralleltoserial mii converter general description the max24287 is a flexible, low cost ethernet interface conversion ic. Overview this module provides access to the phy register for phy management. Besides the data interface, a twowire management interface mdio is defined to connect mac. Masterslave controllers lattice reference design rd1194 is proven to support mdio ieee 802. This application note demonstrates various ps and plbased ethernet implementations. To download the reference design, click the proceed to download page button. Now im trying to use the mdio interface to configurate the ethernet chip marvell alaska 88e1111.
Management interfaces for micrel switches windows is a registered tr introduction ethernet products typically need to be configured or managed either before or during operation. This is a legacy product and it has become difficult to update or maintain pc software driver compatibility with new versions of windows. Mdio interface the mc92603 chip mdio interface consists of one enable input, five address inputs, one clock input, and one bidirectional data signal. Mdio tms320c64x teardown c6000 spru189 spru190 tms320c6000 spru628a text. Precision analog microcontroller, analog io with mdio interface, arm cortexm3 data sheet aducm322i rev. Mdio is used to connect a management entity and a managed phy for the purposes of controlling the phy and gathering status from the phy. A document feedback information furnished by analog devices is believed to be accurate and reliable. A ll data is transferred synchronously to the mdc which is usually provided by the sta or a master controller and sourced to all slave devices. The host or application configures the core registers through the apb slave interface. This allows the slave device to synchronize with the mdio bus. How to access non ethernet phy device register over mdio bus. For example, would an mdio interface be compliant with the spec. The purpose of this extension is to provide the ability to access more device registers while still retaining. The usb2mdio software tool lets texas instruments ethernet phys access the mdio status and device control registers.
The methods in this document describe how to set up an rgmii specific timing budget and determine. Mdi medium dependent interface or management data input. Use pdf download to do whatever you like with pdf files on the web and regain control. Write access to an external phy can be done by using the mdio interface as follows. Inputoutput, which is a serial bus defined for the. The micrel phy software drivers are available for download from the micrel website.
Optional mdio interface is a twowire lowspeed serial interface. The mvd mdio sta management interface is a dropin module for an easy control of the ethernet phy writing or reading phy registers. At least 32 bits on mdio shall be received with value 1 to detect a valid preamble. As a response to this read command over mdio, the external phy provides the value of the designated register back to the mdio core. The mdio interface consists of two pins, a bidirectional mdio pin and a management data clock mdc pin. The mdio module 120 may also communicate with the ahb master module 122.741 1138 694 1065 1284 1330 1343 1155 352 579 1009 842 636 228 1249 388 1306 64 707 236 972 177 1321 349 717 143 377 690 281 1198 1275 124 471 582 650 948 884 63 135 377 1120 280 837 83 1094