PM7346 datasheet(173/419 Pages) PMC

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PM7346 S/UNI-QJET

DATASHEET

PMC-960835

ISSUE 6

SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3

PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND ITS CUSTOMERS’ INTERNAL USE 152

EXZDET=1 only a single LCV would be indicated for this string of excessive

zeros; with EXZDET=0, five LCVs would be indicated for this string (i.e. one

LCV for every 3 consecutive zeros).

EXZSO:

The EXZSO bit enables only summed zero occurrences to be accumulated in

the PMON EXZS Count Registers. When EXZSO is set to logic 1, any

excessive zeros occurrences over an 85 bit period increments the PMON

EXZS counter by one. When EXZSO is set to logic 0, summed LCVs are

accumulated in the PMON EXZS Count Registers. A summed LCV is defined

as the occurrence of either BPVs not part of a valid B3ZS signature or 3

consecutive zeros (or excessive zeros if EXZDET=1) occurring over an 85 bit

period; each summed LCV occurrence increment the PMON EXZS counter

by one.

BPVO:

The BPVO bit enables only bipolar violations to indicate line code violations

and be accumulated in the PMON LCV Count Registers. When BPVO is set

to logic 1, only BPVs not part of a valid B3ZS signature generate an LCV

indication and increment the PMON LCV counter. When BPVO is set to logic

0, both BPVs not part of a valid B3ZS signature, and either 3 consecutive

zeros or excessive zeros generate an LCV indication and increment the

PMON LCV counter.

Table 10

- DS3 FRMR EXZS/LCV count configurations

Counter Function

EXZSO

BPVO

EXZDET

PMON EXZ Count

PMON LCV Count

Summed LCVs

BPVs & every 3

consecutive zeros

Summed LCVs

BPVs & every string of

3+ consecutive zeros

Reserved

Summed excessive

zeros

BPVs & every 3

consecutive zeros

Summed excessive

zeros

BPVs & every string of

3+ consecutive zeros

Summed excessive

zeros

Only BPVs

Summed excessive

zeros

Only BPVs

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