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DP83867CS 数据表(PDF) 47 Page - Texas Instruments |
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DP83867CS 数据表(HTML) 47 Page - Texas Instruments |
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47 / 129 page  7.6.2 Basic Mode Status Register (BMSR) Table 7-11. Basic Mode Status Register (BMSR), Address 0x0001 BIT BIT NAME DEFAULT DESCRIPTION 15 100BASE-T4 0, RO/P 100BASE-T4 Capable: 0 = Device not able to perform 100BASE-T4 mode. 14 100BASE-TX FULL DUPLEX 1, RO/P 100BASE-TX Full Duplex Capable: 1 = Device able to perform 100BASE-TX in full duplex mode. 13 100BASE-TX HALF DUPLEX 1, RO/P 100BASE-TX Half Duplex Capable: 1 = Device able to perform 100BASE-TX in half duplex mode. 12 10BASE-Te FULL DUPLEX 1, RO/P 10BASE-Te Full Duplex Capable: 1 = Device able to perform 10BASE-Te in full duplex mode. 11 10BASE-Te HALF DUPLEX 1, RO/P 10BASE-Te Half Duplex Capable: 1 = Device able to perform 10BASE-Te in half duplex mode. 10 100BASE-T2 FULL DUPLEX 0, RO/P 100BASE-T2 Full Duplex Capable: 0 = Device not able to perform 100BASE-T2 in full duplex mode. 9 100BASE-T2 HALF DUPLEX 0, RO/P 100BASE-T2 Half Duplex Capable: 0 = Device not able to perform 100BASE-T2 in half duplex mode. 8 EXTENDED STATUS 1, RO/P 1000BASE-T Extended Status Register: 1 = Device supports Extended Status Register 0x0F. 7 RESERVED 0, RO RESERVED: Write as 0, read as 0. 6 MF PREAMBLE SUPPRESSION 1, RO/P Preamble Suppression Capable: 1 = Device able to perform management transaction with preamble suppressed, 32-bits of preamble needed only once after reset, invalid opcode or invalid turnaround. 0 = Normal management operation. The device requires minimum of 500ns gap between two transactions, followed by one positive edge of MDC and MDIO=1, before starting the next transaction. 5 AUTO-NEGOTIATION COMPLETE 0, RO Auto-Negotiation Complete: 1 = Auto-Negotiation process complete. 0 = Auto-Negotiation process not complete. 4 REMOTE FAULT 0, RO/LH Remote Fault: 1 = Remote Fault condition detected (cleared on read or by reset). Fault criteria: Far-End Fault Indication or notification from Link Partner of Remote Fault. 0 = No remote fault condition detected. 3 AUTO-NEGOTIATION ABILITY 1, RO/P Auto Negotiation Ability: 1 = Device is able to perform Auto-Negotiation. 0 = Device is not able to perform Auto-Negotiation. 2 LINK STATUS 0, RO/LL Link Status: 1 = Valid link established. 0 = Link not established. The criteria for link validity is implementation specific. The occurrence of a link failure condition causes the Link Status bit to clear. Once cleared, this bit can only be set by establishing a good link condition and a read through the management interface. www.ti.com DP83867CS, DP83867IS, DP83867E SNLS504F – OCTOBER 2015 – REVISED JANUARY 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 47 Product Folder Links: DP83867CS DP83867IS DP83867E |
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