PM7344 datasheet(115/293 Pages) PMC

115 / 293 page

PM7344 S/UNI-MPH

DATA SHEET

PMC-950449

ISSUE 6

MULTI-PHY USER NETWORK INTERFACE

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

Registers 013H, 113H, 213H and 313H: Alternate Loss of Signal Status

Bit

Type

Function

Default

Bit 7

R/W

ALTLOSE

Bit 6

ALTLOSI

Bit 5

Unused

Bit 4

Unused

Bit 3

Unused

Bit 2

Unused

Bit 1

Unused

Bit 0

ALTLOS

The alternate loss of signal status provides a more stringent criteria for the

deassertion of the alarm than the LOS indication in the CDRC Interrupt Status

ALTLOSE:

If the ALTLOSE bit is a logic 1, an interrupt is generated when the ALTLOS

status bit changes state.

ALTLOSI:

The ALTLOSI bit is set high when the ALTLOS status bit changes state. It is

cleared when this register is read.

ALTLOS:

The ALTLOS bit is asserted based on the LOS[1:0] threshold selected in the

CDRC Configuration register. The ALTLOS bit is deasserted only after pulse

density requirements have been met. The pulse density requirements for the

T1 format specify that there must be N ones in each and every time window

of 8(N+1) data bits (where N can equal 1 through 23). The pulse density

requirements for the E1 format specify that 255 bit periods are observed

during which no sequence of four zeros is detected.

PM7344 Datasheet(PDF) 115 Page - PMC-Sierra, Inc

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