PM7344 datasheet(92/293 Pages) PMC

92 / 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 003H, 103H, 203H and 303H: Receive Interface Configuration

Bit

Type

Function

Default

Bit 7

Unused

Bit 6

Unused

Bit 5

R/W

BPV

Bit 4

R/W

RDNINV

Bit 3

R/W

RDPINV

Bit 2

R/W

RUNI

Bit 1

R/W

RFALL

Bit 0

Unused

These registers enable the Receive Interface to handle the various input

waveform formats.

BPV:

When the T1 or E1 format is selected, the BPV bit enables only bipolar

violations to indicate line code violations and be accumulated in the PMON

LCV Count Registers. When BPV is set to logic 1, only BPVs not part of a

valid B8ZS or HDB3 signature generate an LCV indication and increment the

PMON LCV counter. When BPV is set to logic 0, both BPVs not part of a

valid B8ZS signature and excessive zeros (EXZ) generate an LCV indication

and increment the PMON LCV counter. Excessive zeros is a sequence of

zeros greater than 15 bits long for a T1 AMI-coded signal, greater than 7 bits

long for a T1 B8ZS-coded signal, and greater than 3 bits long for an E1 AMI

or HDB3-coded signal.

RDPINV,RDNINV:

The RDPINV and RDNINV bits enable the Receive Interface to logically invert

the signals received onmultifunction pins RDP/RDD[x] and

RDN/RLCV/ROH[x], respectively. When RDPINV is set to logic 1, the

interface inverts the signal on the RDP/RDD[x] input. When RDPINV is set to

logic 0, the interface passes the RDP/RDD[x] signal unaltered. When

RDNINV is set to logic 1, the interface inverts the signal on the

RDN/RLCV/ROH[x] input. When RDNINV is set to logic 0, the interface

passes the RDN/RLCV/ROH[x] signal unaltered.

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