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CS8952 数据表(PDF) 34 Page - Cirrus Logic |
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CS8952 数据表(HTML) 34 Page - Cirrus Logic |
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34 / 82 page  CS8952 34 CrystalLAN™ 100BASE-X and 10BASE-T Transceiver 6.2 Basic Mode Status Register - Address 01h 15 14 13 12 11 10 9 8 100BASE-T4 100BASE-TX/ Full Duplex 100BASE-TX/ Half Duplex 10BASE-T/ Full Duplex 10BASE-T/ Half Duplex Reserved 765 4321 0 Reserved MF Preamble Suppression Auto-Neg Complete Remote Fault Auto-Neg Ability Link Status Jabber Detect Extended Capability BIT NAME TYPE RESET DESCRIPTION 15 100BASE-T4 Read Only 0 The CS8952 does not support 100BASE-T4 opera- tion, so this bit will always read 0. 14 100BASE-TX/Full Duplex Read Only 1 When this bit is set, it indicates that the CS8952 is capable of 100BASE-TX Full-Duplex operation. This bit reflects the status of the 100BASE-TX/Full-Duplex bit in the Auto-Negotiation Advertisement Register (address 04h). 13 100BASE-TX/Half Duplex Read Only 1 When this bit is set, it indicates that the CS8952 is capable of 100BASE-TX Half-Duplex operation. This bit reflects the status of the 100BASE-TX/Half Duplex bit in the Auto-Negotiation Advertisement Register (address 04h). 12 10BASE-T/Full Duplex Read Only 1 When this bit is set, it indicates that the CS8952 is capable of 10BASE-T Full-Duplex operation. This bit reflects the status of the 10BASE-T/Full Duplex bit in the Auto-Negotiation Advertisement Register (address 04h). 11 10BASE-T/Half Duplex Read Only 1 When this bit is set, it indicates that the CS8952 is capable of 10BASE-T Half-Duplex operation. This bit reflects the status of the 10BASE-T/Half Duplex bit in the Auto-Negotiation Advertisement Register (address 04h). 10:7 Reserved Read Only 0000 6 MF Preamble Sup- pression Read Only 1 When set, this bit indicates that the CS8952 is capa- ble of accepting management frames regardless of whether they are preceded by the preamble pattern. When clear, it indicates that the management frame must be preceded by the preamble pattern to be con- sidered valid. This bit reflects the status of the MR Preamble Enable bit in the PCS Sub-Layer Configu- ration Register (address 17h). 5 Auto-Neg Complete Read Only 0 This bit is set to a 1 when the auto-negotiation pro- cess has completed. This is an indication that data is valid in the Auto-Negotiation Advertisement Register (address 04h), the Auto-Negotiation Link Partner Ability Register (address 05h), and the Auto-Negotia- tion Expansion Register (address 06h). 4 Remote Fault Read Only 0 When auto-negotiation is enabled, this bit is set if the Remote Fault bit is set in the Auto-Negotiation Link Partner Ability Register (address 05h). When auto- negotiation is disabled, this bit will be set when a Far- End Fault Indication for 100BASE-TX is detected. |
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