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| PM5349 |
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DATASHEET |
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| ISSUE 6 | SATURN USER NETWORK INTERFACE |
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| majority of I bits inverted + previous NDF_enable, inc_ind |
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| or dec_ind more than 3 frames ago |
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| inv_point |
| not any of above | (i.e., not norm_point, and not |
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| NDF_enable, and not AIS_ind, and not inc_ind and not |
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| dec_ind) |
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| new_point |
| disabled_NDF + ss + offset value in range of 0 to 782 but |
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| not equal to active offset |
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| inc_req |
| majority of I bits inverted + no majority of D bits inverted |
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| dec_req |
| majority of D bits inverted + no majority of I bits inverted |
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| Note 1.- | active offset is defined as the accepted current phase of the SPE |
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| (VC) in the NORM_state and is undefined in the other states. |
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| Note 2 - | enabled NDF is defined as the following bit patterns: 1001, 0001, |
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| 1101, 1011, 1000. |
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| Note 3 - | disabled NDF is defined as the following bit patterns: 0110, 1110, |
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| 0010, 0100, 0111. |
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| Note 4 - | the remaining six NDF codes (0000, 0011, 0101, 1010, 1100, 1111) |
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| result in an inv_point indication. |
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| Note 5 - | ss bits are unspecified in SONET and has bit pattern 10 in SDH |
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| Note 6 - | the use of ss bits in definition of indications may be optionally |
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| disabled. |
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| Note 7 - | the requirement for previous NDF_enable, inc_ind or dec_ind be |
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| more than 3 frames ago may be optionally disabled. |
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| Note 8 - | new_point is also an inv_point. |
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| Note 9 - | LOP is not declared if all the following conditions exist: |
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| • the received pointer is out of range (>782), |
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| • the received pointer is static, |
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| • the received pointer can be interpreted, according |
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to majority voting on the I and D bits, as a positive or negative justification indication,
• after making the requested justification, the received pointer continues to be interpretable as a
pointer justification.
Proprietary and Confidential to | 40 |