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DS26324 Datasheet(PDF) 30 Page - Dallas Semiconductor |
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DS26324 Datasheet(HTML) 30 Page - Dallas Semiconductor |
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30 / 120 page  DS26324 3.3V, 16-Channel, E1/T1/J1 Short-Haul Line Interface Unit 30 of 120 RPOS and RNEG without any modification. The Single-Rail Mode Select Register (SRMS) is used for selection of dual-rail or single-rail mode. The bipolar violation (and B8ZS/HDB3) detectors detect violations in dual-rail and single-rail modes, but in dual-rail mode the violations will only be reported to the Line Violation Detect Status (LVDS) registers. 5.5.9 Receive Single-Rail Mode Receive single-rail mode consists of the RPOS, RCLK, and CV pins on the system side. B8ZS or HDB3 decoding is available. The Single-Rail Mode Select Register (SRMS) is used for selection of dual-rail or single-rail mode. 5.5.10 Bipolar Violation and Excessive Zero Detector The DS26324 detects HDB3 code violations, BPVs, and excessive zero errors. The reporting of the errors is done through the RNEGn/CVn pin in single-rail mode and the LVDS registers in both single- and dual-rail modes. Code violations are only detected in E1 mode with HDB3 encoding. The code violation detection declares an error when a bipolar violation of the same polarity as the last bipolar violation is received. Excessive zeros are detected if eight consecutive zeros are detected with B8ZS enabled and four consecutive zeros are detected with HDB3 enabled. Excessive zero detection is enabled via the Excessive Zero Detect Enable Register (EZDE) and when HDB3/B8ZS encoding/decoding is selected via the Line Code Selection Register (LCS). The bits in the LCS, EZDE, and CVDEB registers determine the combinations that are reported. Table 5-11 outlines the functionality. Table 5-11. BPV, Code Violation, and Excessive Zero Error Reporting CONDITIONS LCS EZDE CVDEB ERRORS DETECTED 0 0 0 BPV (T1)/Code Violation (E1) 0 0 1 BPV 0 1 0 Excessive Zeros and BPV (T1)/Code Violation (E1) 0 1 1 Excessive Zeros and BPV 1 X X BPV |
Similar Part No. - DS26324_07 |
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Similar Description - DS26324_07 |
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