PM5356 datasheet(60/307 Pages) PMC

60 / 307 page

RELEASED

S/UNI-622-MAX

PMC-Sierra, Inc.

PM5356

S/UNI-622-MAX

DATASHEET

PMC-1980589

ISSUE 6

SATURN USER NETWORK INTERFACE (622-MAX)

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

• 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-

622-MAX will interpret it correctly.

Note 10 -

LOP will exit at the third frame of a three frame sequence consisting

of one frame with NDF enabled followed by two frames with NDF

disabled, if all three pointers have the same legal value.

The transitions indicated in the state diagram are defined in the following table.

Table 2: Pointer Interpreter Transition Description

Transition

Description

inc_ind/dec_ind

offset adjustment (increment or decrement indication)

3 x eq_new_point

three consecutive equal new_point indications

NDF_enable

single NDF_enable indication

3 x AIS_ind

three consecutive AIS indications

8 x inv_point

eight consecutive inv_point indications

8 x NDF_enable

eight consecutive NDF_enable indications

Note 1 -

the transitions from NORM_state to NORM_state do not represent

state changes but imply offset changes.

Note 2 -

3 x new_point takes precedence over other events and if the

IINVCNT bit is set resets the inv_point count.

Note 3 -

all three offset values received in 3 x eq_new_point must be

identical.

Note 4 -

"consecutive event counters" are reset to zero on a change of state

except for consecutive NDF count.

The Pointer Interpreter detects loss of pointer (LOP) in the incoming STS-

12c/STM-4-4c stream. LOP is declared on entry to the LOP_state as a result of

eight consecutive invalid pointers or eight consecutive NDF enabled indications.

The alarm condition is reported in the receive alarm port and is optionally

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