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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 | 
