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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DP83261 датащи(PDF) 36 Page - National Semiconductor (TI) |
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DP83261 датащи(HTML) 36 Page - National Semiconductor (TI) |
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36 / 132 page  60 Control Information (Continued) Ring Event Latch Register (RELR0) The Ring Event Latch Register 0 (RELR0) captures conditions that occur on the Ring including the receipt of Beacon and Claim frames transitions in the Ring Operational flag and the receipt of duplicate addresses Each bit may be masked via the Ring Event Mask Register 0 (REMR0) ACCESS RULES Address Read Write 10h Always Condition REGISTER BITS D7 D6 D5 D4 D3 D2 D1 D0 RES DUPADD PINV OTRMAC CLMR BCNR RNOP ROP Bit Symbol Description D0 ROP Ring Operational Set Is set when the Local Ring Operational flag transitions from 0 to 1 D1 RNOP Ring Non-Operational Set Is set when the Local Ring Operational flag transitions from 1 to 0 D2 BCNR Beacon Frame Received Indicates that a valid Beacon frame was received When set restricted and synchronous requests are not serviced The type of Beacon frame received is given in Register RELR1 D3 CLMR Claim Frame Received Indicates that a valid Claim frame was received When set restricted requests are not serviced The type of Claim frame received is given in Register RELR1 D4 OTRMAC Other MAC Frame Received Indicates that a MAC frame other than a Beacon or Claim frame was received When set restricted requests are not serviced D5 PINV PHY Invalid Received Indicates that a PHY Invalid was received This could be the result of a PLAYER device Reset operation PHY Invalid causes the MAC Receiver to enter state R0 (Listen) D6 DUPADD Duplicate Address Received Indicates that a valid individual frame addressed to this station was received with the A indicator set This could be caused by either a MAC using the same address (duplicate address) or a strip error at the Source (the frame was received twice) D7 RES Reserved 36 |
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