PM7347 datasheet(130/341 Pages) PMC

130 / 341 page

S/UNI®-JET Data Sheet

Released

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

130

Document ID: PMC-1990267, Issue 3

(ACE=1 in Register 333H)

Bit

Type

Function

Default

Bit 7

Unused

Bit 6

Unused

Bit 5

R/W

AISONES

Bit 4

R/W

BPVO

Bit 3

R/W

EXZSO

Bit 2

R/W

EXZDET

Bit 1

R/W

SALGO

Bit 0

R/W

DALGO

The DALGO bit determines the criteria used to decode a valid B3ZS signature. When

DALGO is set to logic one, a valid B3ZS signature is declared and three zeros substituted

whenever a zero followed by a bipolar violation of the opposite polarity to the last observed

BPV is seen. When the DALGO bit is set to logic zero, a valid B3ZS signature is declared

and the three zeros are substituted whenever a zero followed by a bipolar violation is

observed.

SALGO

The SALGO bit determines the criteria used to establish a valid B3ZS signature used to map

BPVs to LCV indications. Any BPV that is not part of a valid B3ZS signature is indicated as

an LCV. When the SALGO bit is set to logic one, a valid B3ZS signature is declared

whenever a zero followed by a bipolar violation is observed. When SALGO is set to logic

zero, a valid B3ZS signature is declared whenever a zero followed by a bipolar violation of

the opposite polarity to the last observed BPV is seen.

EXZDET

The EXZDET bit determines the type of zero occurrences to be included in the LCV

indication. When EXZDET is set to logic one, the occurrence of an excessive zero generates

a single pulse indication that is used to indicate an LCV. When EXZDET is set to logic zero,

every occurrence of three consecutive zeros generates a pulse indication that is used to

indicate an LCV. For example, if a sequence of 15 consecutive zeros were received, with

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 three

consecutive zeros). Refer to Table 14.

PM7347 Datasheet(PDF) 130 Page - PMC-Sierra, Inc

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