PM7340 datasheet(89/334 Pages) PMC

89 / 334 page

PRELIMINARY

INVERSE MULTIPLEXING OVER ATM

PM7340 S/UNI-IMA-8

DATA SHEET

PMC-2001723

ISSUE 3

INVERSE MULTIPLEXING OVER ATM

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

Delete_link

Remove one or more links from the group. If

the group configuration is symmetric, links

should be deleted in both the Tx and RX

directions.

When a Tx link is deleted, user traffic is no

longer sent on the link and it’s state is reported

as “Not in Group”, but IMA frames are still

generated. When either a timeout expires or

the FE Rx is detected to be no longer active,

the deleted links stop generating IMA frames

and start generating idle cells until the link is

reused.

When an Rx link is deleted, it’s state is reported

as “Not in Group”, but traffic is still received and

passed to the ATM layer, until the either a

timeout expires or FE Tx state is detected to be

no longer active. Data received after this point

will no longer be forwarded to the ATM layer.

The RX link is available for reuse after all the

data accumulated in the DCB has been

forwarded to the ATM layer.

No data will be lost in the link deletion

procedure unless the timeout occurs prior to the

FE state change detection.

Set_rx_phy_defect

Indicate to S/UNI-IMA-8 that the given link(s)

have/have not physical defects (such as

LOS/LOF/OOF/AIS) which are not detectable

internally. This causes the S/UNI-IMA-8 to start

reporting physical layer defects in the RX

Defect Indication field in the ICP field for the

affected links.

PM7340 Datasheet(PDF) 89 Page - PMC-Sierra, Inc