PM4388 datasheet(60/284 Pages) PMC

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PM4388 TOCTL

DATA SHEET

PMC-960840

ISSUE 5

OCTAL T1 FRAMER

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

DS1 stream. The IBCD must still be programmed to detect the desired

pattern, and otherwise operates unchanged.

Reserved

Reserved for future use.

AUTOYELLOW:

When the AUTOYELLOW bit is set to logic 1, then whenever ALMI declares a

Red alarm in the ingress direction, XBAS will transmit a Yellow alarm in the

egress direction. When AUTOYELLOW is set to logic 0, XBAS will only

transmit a Yellow alarm when the XYEL bit is set in the XBAS Alarm Transmit

that the Red alarm from ALMI is not deasserted on detection of AIS.

AUTORED:

The AUTORED bit allows global trunk conditioning to be applied to the

ingress data stream, ID[x], immediately upon declaration of Red carrier failure

alarm. When AUTORED is set to logic 1, the data on ID[x] for each channel is

replaced with the data contained in the data trunk conditioning registers

within RPSC while Red CFA is declared. When AUTORED is set to logic 0,

the ingress data is not automatically conditioned when Red CFA is declared.

AUTOOOF:

The AUTOOOF bit allows global trunk conditioning to be applied to the

ingress data stream, ID[x], immediately upon declaration of out of frame

(OOF). When AUTOOOF is set to logic 1, then while OOF is declared, the

data on ID[x] for each channel is replaced with the data contained in the data

trunk conditioning registers within RPSC. When AUTOOOF is set to logic 0,

the ingress data is not automatically conditioned by RPSC when OOF is

declared. However, if the ELST is not bypassed, then the ELST trouble code

will still be inserted in channel data while OOF is declared. RPSC data and

signaling trunk conditioning overwrites the ELST trouble code.

AUTOUPDATE

When AUTOUPDATE is logic 1, the PMON and PRGD registers in the

appropriate framer are automatically updated once every 8000 receive frame

periods, i.e. once a second, timed to the receive line. If the INTE bit is set in

PM4388 Datasheet(PDF) 60 Page - PMC-Sierra, Inc