PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
4. The remaining six NDF codes (0000, 0011, 0101, 1010, 1100, 1111) result in
an inv_point indication.
5. The legal range of pointer values for the five supported tributary types are:
VT1.5 : 0 .. 103
VT2 :
VT3 :
VT6 :
TU3 :
0 .. 139
0 .. 211
0 .. 427
0 .. 764
6. The requirement for previous NDF_enable, inc_ind or dec_ind be more than 3
frames ago may be optionally disabled.
7. New_point is also an inv_point.
8. The requirement for 3 consecutive AIS indications may be optionally disabled.
The transitions indicated in the state diagram are defined as follows:
inc_ind/dec_ind: offset adjustment (increment or decrement indication)
3 x eq_new_point:
NDF_enable:
3 x AIS_ind:
three consecutive equal new_point indications
single NDF_enable indication
three consecutive AIS indications
8 x inv_point:
eight consecutive inv_point indications
8 x NDF_enable eight consecutive NDF_enable indications
Notes:
1.
2.
The transitions from NORM_state to NORM_state do not represent state
changes but imply offset changes.
3 x eq_new_point takes precedence over other events.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
95
PMC [ PMC-SIERRA, INC ]
