PM5347 datasheet(112/302 Pages) PMC

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PM5347 S/UNI-PLUS

DATA SHEET

PMC-941033

ISSUE 6

SATURN USER NETWORK INTERFACE PLUS

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

Bit

Type

Function

Default

Bit 7

R/W

PSBFE

Bit 6

R/W

COAPSE

Bit 5

R/W

S1E

Bit 4

S1I

Bit 3

PSBFI

Bit 2

COAPSI

Bit 1

Unused

Bit 0

PSBFV

PSBFV:

The PSBFV bit indicates the protection switching byte failure alarm state. The

alarm is declared (PSBFV is a logic one) when twelve successive frames

have been received where no three consecutive frames contain identical K1

bytes. The alarm is removed (PSBFV is a logic zero) when three consecutive

frames containing identical K1 bytes have been received.

COAPSI:

The COAPSI bit is a logic one when a new APS code value has been

extracted into the S/UNI-PLUS Receive K1/K2 Registers. The registers are

updated when the same new K1/K2 byte values are observed for three

consecutive frames. This bit is cleared when the S/UNI-PLUS APS

Control/Status Register is read.

PSBFI:

The PSBFI bit is a logic one when the protection switching byte failure alarm

is declared or removed. This bit is cleared when the S/UNI-PLUS APS

Control/Status Register is read.

S1I:

The S1I bit is a logic one when a new S1 byte value has been extracted into

the S/UNI-PLUS Receive S1 Register. The register is updated when a S1

byte value is extracted that is different than the S1 byte value extracted in the

PM5347 Datasheet(PDF) 112 Page - PMC-Sierra, Inc

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