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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DP83848C датащи(PDF) 53 Page - National Semiconductor (TI) |
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DP83848C датащи(HTML) 53 Page - National Semiconductor (TI) |
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53 / 82 page  53 www.national.com 7.2.4 False Carrier Sense Counter Register (FCSCR) This counter provides information required to implement the “False Carriers” attribute within the MAU managed object class of Clause 30 of the IEEE 802.3u specification. 7.2.5 Receiver Error Counter Register (RECR) This counter provides information required to implement the “Symbol Error During Carrier” attribute within the PHY man- aged object class of Clause 30 of the IEEE 802.3u specification. Table 24. False Carrier Sense Counter Register (FCSCR), address 0x14 Bit Bit Name Default Description 15:8 RESERVED 0, RO RESERVED: Writes ignored, Read as 0 7:0 FCSCNT[7:0] 0, RO / COR False Carrier Event Counter: This 8-bit counter increments on every false carrier event. This counter sticks when it reaches its max count (FFh). Table 25. Receiver Error Counter Register (RECR), address 0x15 Bit Bit Name Default Description 15:8 RESERVED 0, RO RESERVED: Writes ignored, Read as 0 7:0 RXERCNT[7:0] 0, RO / COR RX_ER Counter: When a valid carrier is present and there is at least one occurrence of an invalid data symbol, this 8-bit counter increments for each re- ceive error detected. This event can increment only once per valid carrier event. If a collision is present, the attribute will not incre- ment. The counter sticks when it reaches its max count. |
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