PM7344 datasheet(35/293 Pages) PMC

35 / 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

Pin Name

Type

No.

Function

RDN[4]

RDN[3]

RDN[2]

RDN[1]/

Input

Receive Digital Negative Line Pulse (RDN).

This signal is available when the S/UNI-MPH is

configured to receive dual-rail formatted data.

The RDN input can be enabled for either RZ or

NRZ waveforms. When enabled for NRZ, RDN

may be enabled to be sampled on the rising or

falling edge of RCLKI. When enabled for RZ,

clock is recovered from the RDP and RDN

inputs.

RLCV[4]

RLCV[3]

RLCV[2]

RLCV[1]/

Receive Line Code Violation Indication (RLCV).

When the S/UNI-MPH is configured to receive

single-rail data, this signal contains line code

violation indications that are detected by the

upstream line interface unit (LIU). RLCV may

be enabled to be sampled on the rising or falling

edge of RCLKI.

ROH[4]

ROH[3]

ROH[2]

ROH[1]

Receive Overhead Mask (ROH). When the

S/UNI-MPH is configured to bypass the T1/E1

framers, this signal indicates the framing

overhead in the receive stream, thus allowing

the S/UNI-MPH to provide a user network

interface for arbitrary bit rates (such as the

6.312 Mbit/s J2 rate). ROH may be configured

to be active high or active low, and may be

enabled to be sampled on the rising or falling

edge of RCLKI.

RCLKI[4]

RCLKI[3]

RCLKI[2]

RCLKI[1]

Input

Receive Line Clock Input (RCLKI). This signal is

the externally recovered line clock that may be

enabled to sample the RDP and RDN inputs on

its rising or falling edge when the input format is

enabled for dual-rail NRZ; or to sample the RDD

and RLCV/ROH inputs on its rising or falling

edge when the input format is enabled for

single-rail, or when the T1/E1 framers are

bypassed. RCLKI must operate at frequencies

less than or equal to 25 MHz.

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