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DS2155 Datasheet(PDF) 203 Page - Dallas Semiconductor |
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DS2155 Datasheet(HTML) 203 Page - Dallas Semiconductor |
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203 / 262 page ![]() DS2156 203 of 262 Register Name: BC2 Register Description: BERT Control Register 2 Register Address: E1h Bit # 7 6 5 4 3 2 1 0 Name EIB2 EIB1 EIB0 SBE RPL3 RPL2 RPL1 RPL0 Default 0 0 0 0 0 0 0 0 Bits 0 to 3/Repetitive Pattern Length Bit 3 (RPL0 to RPL3). RPL0 is the LSB and RPL3 is the MSB of a nibble that describes how long the repetitive pattern is. The valid range is 17 (0000) to 32 (1111). These bits are ignored if the receive BERT is programmed for a pseudorandom pattern. To create repetitive patterns fewer than 17 bits in length, the user must set the length to an integer number of the desired length that is less than or equal to 32. For example, to create a 6-bit pattern, the user can set the length to 18 (0001) or to 24 (0111) or to 30 (1101). Length (bits) RPL3 RPL2 RPL1 RPL0 17 0 0 0 0 18 0 0 0 1 19 0 0 1 0 20 0 0 1 1 21 0 1 0 0 22 0 1 0 1 23 0 1 1 0 24 0 1 1 1 25 1 0 0 0 26 1 0 0 1 27 1 0 1 0 28 1 0 1 1 29 1 1 0 0 30 1 1 0 1 31 1 1 1 0 32 1 1 1 1 Bit 4/Single Bit-Error Insert (SBE). A low-to-high transition creates a single-bit error. Must be cleared and set again for a subsequent bit error to be inserted. Bits 5 to 7/Error Insert Bits 0 to 2 (EIB0 to EIB2). Automatically inserts bit errors at the prescribed rate into the generated data pattern. Can be used for verifying error-detection features. EIB2 EIB1 EIB0 Error Rate Inserted 0 0 0 No errors automatically inserted 0 0 1 10E-1 0 1 0 10E-2 0 1 1 10E-3 1 0 0 10E-4 1 0 1 10E-5 1 1 0 10E-6 1 1 1 10E-7 |
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