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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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SPRUG18 Datenblatt(PDF) 157 Page - Texas Instruments |
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SPRUG18 Datenblatt(HTML) 157 Page - Texas Instruments |
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157 / 214 page  TMS320C6474 www.ti.com SPRS552H – OCTOBER 2008 – REVISED APRIL 2011 7.14 Management Data Input/Output (MDIO) The Management Data Input/Output (MDIO) module implements the 802.3 serial management interface to interrogate and controls up to 32 Ethernet PHY(s) connected to the device, using a shared two-wire bus. Application software uses the MDIO module to configure the auto-negotiation parameters of each PHY attached to the EMAC, retrieve the negotiation results, and configure required parameters in the EMAC module for correct operation. The module is designed to allow almost transparent operation of the MDIO interface, with very little maintenance from the core processor. The EMAC control module is the main interface between the device core processor, the MDIO module, and the EMAC module. The relationship between these three components is shown in Figure 7-34. For more detailed information on the EMAC/MDIO, see the TMS320C6474 DSP EMAC/MDIO Module Reference Guide (literature number SPRUG08). 7.14.1 MDIO Peripheral Register Description(s) The memory map of the MDIO is shown in Table 7-61. Table 7-61. MDIO Registers HEX ADDRESS ACRONYM REGISTER NAME 02C8 1800 VERSION MDIO Version Register 02C8 1804 CONTROL MDIO Control Register 02C8 1808 ALIVE MDIO PHY Alive Status Register 02C8 180C LINK MDIO PHY Link Status Register 02C8 1810 LINKINTRAW MDIO link Status Change Interrupt (unmasked) Register 02C8 1814 LINKINTMASKED MDIO link Status Change Interrupt (masked) Register 02C8 1818 - 02C8 181C - Reserved 02C8 1820 USERINTRAW MDIO User Command Complete Interrupt (Unmasked) Register 02C8 1824 USERINTMASKED MDIO User Command Complete Interrupt (Masked) Register 02C8 1828 USERINTMASKSET MDIO User Command Complete Interrupt Mask Set Register 02C8 182C USERINTMASKCLEAR MDIO User Command Complete Interrupt Mask Clear Register 02C8 1830 - 02C8 187C - Reserved 02C8 1880 USERACCESS0 MDIO User Access Register 0 02C8 1884 USERPHYSEL0 MDIO User PHY Select Register 0 02C8 1888 USERACCESS1 MDIO User Access Register 1 02C8 188C USERPHYSEL1 MDIO User PHY Select Register 1 02C8 1890 - 02C8 1FFF - Reserved Copyright © 2008–2011, Texas Instruments Incorporated Peripheral Information and Electrical Specifications 157 Submit Documentation Feedback Product Folder Link(s) :TMS320C6474 |
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