PM7375-SC datasheet(139/430 Pages) PMC

139 / 430 page

PM7375 LASAR-155

DATA SHEET

PMC-931127

ISSUE 6

LOCAL ATM SAR & PHYSICAL LAYER

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

123

10.1.13

Bit

Type

Function

Default

Bit 15

Unused

Bit 14

Unused

Bit 13

Unused

Bit 12

Unused

Bit 11

Unused

Bit 10

Unused

Bit 9

Unused

Bit 8

Unused

Bit 7

Unused

Bit 6

R/W

Bit 5

R/W

Reserved

Bit 4

R/W

Reserved

Bit 3

R/W

Reserved

Bit 2

R/W

Reserved

Bit 1

R/W

Reserved

Bit 0

R/W

LAIS

LAIS:

The LAIS bit controls the insertion of line alarm indication signal (AIS). When

LAIS is set to logic one, the TSOP inserts AIS into the transmit SONET stream.

Activation or deactivation of line AIS insertion is synchronized to frame

boundaries. Line AIS insertion results in all bits of the SONET frame being set to

1 prior to scrambling except for the section overhead.

Reserved:

The reserved bits must be programmed to logic zero for proper operation.

DS:

The DS bit is set to logic one to disable the scrambling of the STS-3c (STM-1) or

STS-1 stream. When DS is a logic zero, scrambling is enabled.

PM7375-SC Datasheet(PDF) 139 Page - PMC-Sierra, Inc

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