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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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TNETV1647GSTZWT 데이터시트(HTML) 214 Page - Texas Instruments |
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214 / 236 page  TMS320DM6441 SPRS359E – SEPTEMBER 2006 – REVISED AUGUST 2010 www.ti.com 6.20 Management Data Input/Output (MDIO) The Management Data Input/Output (MDIO) module continuously polls all 32 MDIO addresses in order to enumerate all PHY devices in the system. The Management Data Input/Output (MDIO) module implements the 802.3 serial management interface to interrogate and control Ethernet PHY(s) using a shared 2-wire bus. Host 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. Only one PHY may be connected at any given time. For more detailed information on the MDIO peripheral, see the TMS320DM644x DMSoC Ethernet Media Access Controller (EMAC)/Management Data Input/Output (MDIO) Module User's Guide (literature number SPRUE24). For a list of supported registers and register fields, see Table 6-94 [MDIO Registers] in this data manual. 6.20.1 Peripheral Register Description(s) Table 6-94. MDIO Registers HEX ADDRESS RANGE ACRONYM REGISTER NAME 0x01C8 4000 – Reserved 0x01C8 4004 CONTROL MDIO Control Register 0x01C8 4008 ALIVE MDIO PHY Alive Status Register 0x01C8 400C LINK MDIO PHY Link Status Register 0x01C8 4010 LINKINTRAW MDIO Link Status Change Interrupt (Unmasked) Register 0x01C8 4014 LINKINTMASKED MDIO Link Status Change Interrupt (Masked) Register 0x01C8 4018 – Reserved 0x01C8 4020 USERINTRAW MDIO User Command Complete Interrupt (Unmasked) Register 0x01C8 4024 USERINTMASKED MDIO User Command Complete Interrupt (Masked) Register 0x01C8 4028 USERINTMASKSET MDIO User Command Complete Interrupt Mask Set Register 0x01C8 402C USERINTMASKCLEAR MDIO User Command Complete Interrupt Mask Clear Register 0x01C8 4030 - 0x01C8 407C – Reserved 0x01C8 4080 USERACCESS0 MDIO User Access Register 0 0x01C8 4084 USERPHYSEL0 MDIO User PHY Select Register 0 0x01C8 4088 USERACCESS1 MDIO User Access Register 1 0x01C8 408C USERPHYSEL1 MDIO User PHY Select Register 1 0x01C8 4090 - 0x01C8 47FF – Reserved 214 Peripheral and Electrical Specifications Copyright © 2006–2010, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TMS320DM6441 |
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