PM7375-SC datasheet(33/430 Pages) PMC

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PM7375-SC датащи(PDF) 33 Page - PMC-Sierra, Inc

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PM7375 LASAR-155

DATA SHEET

PMC-931127

ISSUE 6

LOCAL ATM SAR & PHYSICAL LAYER

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

8.2

Multipurpose Port Interface Signals (24)

Name

Type

No.

Feature

RXPHYBP

I/O

152

The receive physical layer bypass (RXPHYBP) signal

selects whether or not to bypass the internal SONET

PHY in the receive direction. When RXPHYBP is set

high, the internal SONET PHY is bypassed and a SCI-

PHY/Utopia compliant interface consisting of signals:

RSOC, RRDENB, RFIFOEB and RDAT[7:0] is

supported. When RXPHYBP is set low, the

LASAR-155 operates normally with the internal

SONET PHY. In this mode, signals RSOC, RRDENB,

RFIFOFB and RDAT[7:0] can be used to interface to

an external FIFO to support CBR VCs and

Management cells.

Under analog test mode as selected using the

PMCATST bit in the LASAR-155 Master Test register,

this pin is configured as an output and is used for test

purposes.

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