PM7347 datasheet(146/341 Pages) PMC

146 / 341 page

S/UNI®-JET Data Sheet

Released

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

146

Document ID: PMC-1990267, Issue 3

Bit

Type

Function

Default

Bit 7

Unused

Bit 6

CZDI

Bit 5

LOSI

Bit 4

LCVI

Bit 3

COFAI

Bit 2

OOFI

Bit 1

LOS

Bit 0

OOF

The OOF bit indicates the current state of the E3-FRMR. When OOF is logic one, the

E3-FRMR is OOF alignment and actively searching for the new alignment. While OOF is

high all status indications and overhead extraction continue with the previous known

alignment. When OOF is logic zero, the E3-FRMR has found a valid frame alignment and is

operating in a maintenance mode, indicating framing bit errors, and extracting and processing

overhead bits. During reset, OOF is set to logic one, but the setting may change prior to the

LOS

The LOS bit indicates the current state of the Loss-Of-Signal detector. When LOS is logic

one, the E3-FRMR has received 32 consecutive RCLK cycles with no occurrences of bipolar

data on RPOS and RNEG. When LOS is logic zero, the FRMR is receiving valid bipolar data.

When the E3-FRMR has declared LOS, the LOS indication is set to logic zero (de-asserted)

when the E3-FRMR has received 32 consecutive RCLK cycles containing no occurrences of

4 consecutive zeros. The LOS bit is forced to logic zero if the UNI bit is logic one. During

reset, LOS is set to logic zero, but the setting may change prior to the register being read.

OOFI

A logic one OOFI bit indicates a change in the OOF status. The OOFI bit is cleared to logic

zero upon the completion of the register read. When OOFI is logic zero, it indicates that no

OOF state change has occurred since the last time this register was read.

PM7347 Datasheet(PDF) 146 Page - PMC-Sierra, Inc

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