PM7346 datasheet(183/419 Pages) PMC

183 / 419 page

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 162

Bit

Type

Function

Default

Bit 7

Unused

Bit 6

Unused

Bit 5

R/W

Reserved

Bit 4

R/W

UNI

Bit 3

R/W

FORMAT[1]

Bit 2

R/W

FORMAT[0]

Bit 1

R/W

REFRDIS

Bit 0

R/W

REFR

REFR:

A transition from logic 0 to logic 1 in the REFR bit position forces the E3

Framer to initiate a search for frame alignment. The bit must be cleared to

logic 0, then set to logic 1 again to initiate subsequent searches for frame

alignment.

REFRDIS:

The REFRDIS bit disables reframing under the consecutive framing bit error

condition once frame alignment has been found, leaving reframing to be

initiated only by software via the REFR bit. A logic 1 in the REFRDIS bit

position causes the FRMR to remain "locked in frame" once initial frame

alignment has been found. A logic 0 allows reframing to occur when four

consecutive framing patterns are received in error.

FORMAT[1:0]:

The FORMAT[1:0] bits determine the framing mode used for pattern matching

when finding frame alignment and for generating the output status signals.

The FORMAT[1:0] bits select one of two framing formats:

PM7346 Datasheet(PDF) 183 Page - PMC-Sierra, Inc

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