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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DP83821 датащи(PDF) 70 Page - National Semiconductor (TI) |
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DP83821 датащи(HTML) 70 Page - National Semiconductor (TI) |
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70 / 86 page  70 www.national.com 4.0 Register Set (Continued) 4.2.38 TBI Control Register This register is used to enable and/or restart TBI auto-negotiation. It is also used to enable PCS loopback of TBI data. 4.2.39 TBI Status Register This register indicates the link status and the auto-negotiation status for the TBI interface. 4.2.40 TBI Auto-Negotiation Advertisement Register This register is configured before auto-negotiation begins and contains the advertised ability of the local device. Tag: TBICR Size: 32 bits Hard Reset: 00000000h Offset: 00E0h Access: Read Write Soft Reset: 00000000h bit tag description usage 15 unused - Returns 0 14 MR_LOOPBACK TBI PCS Loopback Enable When set to a 1, indicates to TBI that the interfacing PHY device is in loopback mode (i.e. signal detect not necessarily required). 13 unused - returns 0 12 MR_AN_ENABLE TBI Auto-Negotiation Enable When set to a 1, enables the Auto-negotiation function for the TBI interface. R/W 11-10 unused - returns 0 9 MR_RESTART_AN Restarts the TBI Auto- negotiation Process When set to a 1, TBI Auto-Negotiation is restarted. This bit allows management control of renegotiation. 8-0 unused - returns 0 Tag: TBISR Size: 32 bits Hard Reset: 00000000h Offset: 00E4h Access: Read Only Soft Reset: 00000000h bit tag description usage 15-6 unused - returns 0 5 MR_LINK_STATUS Link Status of the TBI Interface Read-only bit, when set to a 1, indicates that the TBI interface is ready to transmit and receive data. 4-3 unused - returns 0 2 MR_AN_COMPLETE TBI Auto-negotiation Completed Successfully Read-only bit, when set to a 1, indicates that the TBI interface has successfully completed auto-negotiation. 1-0 unused - returns 0 Tag: TANAR Size: 32 bits Hard Reset: 00000000h Offset: 00E8h Access: Read Write Soft Reset: 00000000h bit tag description usage 15 NP Next Page Exchange Required When set to a 1, this bit indicates that next page transmission is requested. Subsequent next pages may set the NP bit to a 0 to indicate next page transmission is completed. A device may implement next page ability and choose not to engage in a next page exchange by clearing this bit. 14 mr_adv_ability |
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