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PM7347 Folha de dados(PDF) 121 Page - PMC-Sierra, Inc |
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PM7347 Folha de dados(HTML) 121 Page - PMC-Sierra, Inc |
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121 / 341 page ![]() S/UNI®-JET Data Sheet Released Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 121 Document ID: PMC-1990267, Issue 3 Register 31EH: PMON FEBE/J2-EXZS Event Count LSB Bit Type Function Default Bit 7 R FEBE/J2-EXZS[7] X Bit 6 R FEBE/J2-EXZS[6] X Bit 5 R FEBE/J2-EXZS[5] X Bit 4 R FEBE/J2-EXZS[4] X Bit 3 R FEBE/J2-EXZS[3] X Bit 2 R FEBE/J2-EXZS[2] X Bit 1 R FEBE/J2-EXZS[1] X Bit 0 R FEBE/J2-EXZS[0] X Register 31FH: PMON FEBE/J2-EXZS Event Count MSB Bit Type Function Default Bit 7 Unused X Bit 6 Unused X Bit 5 R FEBE/J2-EXZS[13] X Bit 4 R FEBE/J2-EXZS[12] X Bit 3 R FEBE/J2-EXZS[11] X Bit 2 R FEBE/J2-EXZS[10] X Bit 1 R FEBE/J2-EXZS[9] X Bit 0 R FEBE/J2-EXZS[8] X FEBE/J2-EXZS[13:0] FEBE/J2-EXZS[13:0] represents the number of DS3 or E3 G.832 FEBEs that have been detected since the last time the FEBE error counter was polled. In J2 mode, FEBE/J2-EXZS[13:0] represents the number of Excessive Zeros (EXZS is a string of eight or more consecutive zeros) that have occurred during the previous accumulation interval. The counter (and all other counters in the PMON) is polled by writing to any of the PMON register addresses (314H to 31FH) or to the S/UNI-JET Identification, Master Reset, and Global Monitor Update Register (006H). Such a write transfers the internally accumulated count to the FEBE Event Count Registers and simultaneously resets the internal counter to begin a new cycle of error accumulation. This transfer and reset is carried out in a manner that coincident events are not lost. The transfer takes 255 RCLK cycles to complete in DS3 mode and three RCLK cycles to complete in E3 and J2 mode. |
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