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DS31256 数据表(PDF) 65 Page - Maxim Integrated Products |
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DS31256 数据表(HTML) 65 Page - Maxim Integrated Products |
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65 / 183 page ![]() DS31256 256-Channel, High-Throughput HDLC Controller 65 of 183 Register Name: BERTBC0 Register Description: BERT 32-Bit Bit Counter (lower word) Register Address: 0510h Register Name: BERTBC1 Register Description: BERT 32-Bit Bit Counter (upper word) Register Address: 0514h BERTBC0: BERT Bit Counter 0 (lower word) Bit # 7 6 5 4 3 2 1 0 Name BERT 32-Bit Bit Counter (lower byte) Default 0 0 0 0 0 0 0 0 Bit # 15 14 13 12 11 10 9 8 Name BERT 32-Bit Bit Counter Default 0 0 0 0 0 0 0 0 BERTBC1: BERT Bit Counter 0 (upper word) Bit # 23 22 21 20 19 18 17 16 Name BERT 32-Bit Bit Counter Default 0 0 0 0 0 0 0 0 Bit # 31 30 29 28 27 26 25 24 Name BERT 32-Bit Bit Counter (upper byte) Default 0 0 0 0 0 0 0 0 Note: Bits that are underlined are read-only; all other bits are read-write . Bits 0 to 31/BERT 32-Bit Bit Counter (BERTBC0 and BERTBC1). This 32-bit counter increments for each data bit (i.e., clock) received. This counter is not disabled when the receive BERT loses synchronization. This counter is loaded with the current bit count value when the LC control bit in the BERTC0 register is toggled from low (0) to high (1). When full, this counter saturates and sets the BBCO status bit. Register Name: BERTEC0 Register Description: BERT 24-Bit Error Counter (lower) and Status Information Register Address: 0518h Bit # 7 6 5 4 3 2 1 0 Name n/a RA1 RA0 RLOS BED BBCO BECO SYNC Default 0 0 0 0 0 0 0 0 Bit # 15 14 13 12 11 10 9 8 Name BERT 24-Bit Error Counter (lower byte) Default 0 0 0 0 0 0 0 0 Note: Bits that are underlined are read-only; all other bits are read-write. Bit 0/Real-Time Synchronization Status (SYNC). Real-time status of the synchronizer (this bit is not latched). Is set when the incoming pattern matches for 32 consecutive bit positions. Is cleared when six or more bits out of 64 are received in error. |
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