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DM9013 数据表(PDF) 44 Page - Davicom Semiconductor, Inc. |
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DM9013 数据表(HTML) 44 Page - Davicom Semiconductor, Inc. |
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44 / 75 page  DM9013 3-port switch with Processor Interface 44 Preliminary datasheet DM9013-15-DS-P03 April 9, 2009 selected by auto-negotiation 7 Collision test 0,RW Collision Test 0 = Normal operation 1 = Collision test enabled. When set, this bit will cause the COL signal to be asserted in response to the assertion of TX_EN in internal MII interface. 6-0 Reserved 0,RO Reserved Read as 0, ignore on write 8.2 Basic Mode Status Register (BMSR) – 01H Bit Bit Name Default Description 15 100BASE-T4 0,RO/P 100BASE-T4 Capable 0 = not able to perform in 100BASE-T4 mode 1 = able to perform in 100BASE-T4 mode 14 100BASE-TX full-duplex 1,RO/P 100BASE-TX Full Duplex Capable 0 = not able to perform 100BASE-TX in full duplex mode 1 = able to perform 100BASE-TX in full duplex mode 13 100BASE-TX half-duplex 1,RO/P 100BASE-TX Half Duplex Capable 0 = not able to perform 100BASE-TX in half duplex mode 1 = able to perform 100BASE-TX in half duplex mode 12 10BASE-T full-duplex 1,RO/P 10BASE-T Full Duplex Capable 0 = not able to perform 10BASE-TX in full duplex mode 1 = able to perform 10BASE-T in full duplex mode 11 10BASE-T half-duplex 1,RO/P 10BASE-T Half Duplex Capable 0 = not able to perform 10BASE-T in half duplex mode 1 = able to perform 10BASE-T in half duplex mode 10-7 Reserved 0,RO Reserved Read as 0, ignore on write 6 MF preamble suppression 1,RO MII Frame Preamble Suppression 0 = not accept management frames with preamble suppressed 1 = accept management frames with preamble suppressed 5 Auto-negotiation Complete 0,RO Auto-negotiation Complete 0 = Auto-negotiation process not completed 1 = Auto-negotiation process completed 4 Remote fault 0, RO Remote Fault 0 = No remote fault condition detected 1 = Remote fault condition detected (cleared on read or by a chip reset). Fault criteria and detection method is DM9013 implementation specific. This bit will set after the RF bit in the ANLPAR (bit 13, register address 05) is set 3 Auto-negotiation ability 1,RO/P Auto Configuration Ability 0 = not able to perform auto-negotiation 1 = able to perform auto-negotiation 2 Link status 0,RO Link Status 0 = Link is not established |
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