PM5381-BI PMC-Sierra, Inc., PM5381-BI Datasheet - Page 82

• Manufacturer Part Number: PM5381-BI
• Description: ATM UNI, Single Channel ATM PHY Interface for 2488.32Mbps
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000489, Issue 4
NEW_POINT:
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10:
The transitions indicated in the state diagram are defined as follows:
INC_IND/DEC_IND:
3 x EQ_NEW_POINT:
NDF_ENABLE:
3 x AIS_IND:
8 x INV_POINT:
disabled NDF + ss + offset value in range of 0 to 782 but not
equal to active offset.
active offset is defined as the accepted current phase of the
PE (VC) in the NORM_state and is undefined in the other states.
enabled NDF is defined as the following bit patterns:
1001, 0001, 1101, 1011 and 1000.
disabled NDF is defined as the following bit patterns:
0110, 1110, 0010, 0100 and 0111.
the remaining six NDF bit patterns (0000, 0011, 0101, 1010,
1100, 1111) result in an INV_POINT indication.
ss bits are unspecified in SONET and have bit pattern 10 in SDH.
the use of ss bits in definition of indications may be
optionally disabled.
the requirement for previous NDF_ENABLE, INC_IND or
DEC_IND be more than 3 frames ago may be optionally disabled.
NEW_POINT is also an INV_POINT.
the requirement for the pointer to be within the range of 0 to
782 in 8 X NDF_ENABLE may be optionally disabled.
LOP is not declared if all the following conditions exist:
-
-
-
-
the received pointer is out of range (>782),
the received pointer is static,
the received pointer can be interpreted, according 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.
When the received pointer returns to an in-range value, the
S/UNI-2488 will interpret it correctly.
offset adjustment (increment or decrement indication)
single NDF_ENABLE indication
three consecutive AIS indications
eight consecutive INV_POINT indications
three consecutive equal NEW_POINT indications
S/UNI-2488 Telecom Standard Product Datasheet
Released
82