PM5350 データシートの表示（PDF） - PMC-Sierra

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コンポーネント説明

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PM5350

SATURN USER NETWORK INTERFACE 155.52 & 51.84 MBIT/S

PMC-Sierra 

DATA SHEET

PMC-960924

ISSUE 5

PM5350 S/UNI-ULTRA

SATURN USER NETWORK INTERFACE

4 APPLICATION EXAMPLES

The PM5350 S/UNI-ULTRA is typically used to implement the core of an ATM

User Network Interface by which an ATM terminal is linked to an ATM switching

system using SONET/SDH compatible transport.

The S/UNI-ULTRA finds application at either end of terminal to switch links or

switch to switch links, typically in private network (LAN) applications. In this

application, the S/UNI-ULTRA typically interfaces on its line side with line

coupling transformers and baluns.

The S/UNI-ULTRA may be loop timed internally (the recovered clock is used in

the transmit direction) or source timed (separate transmit and receive clocks).

The drop side interfaces directly with ATM adaptation layer or ATM layer

processors. The initial configuration and ongoing control and monitoring of the

S/UNI-ULTRA is provided via a generic microprocessor interface. The S/UNI-

ULTRA also supports a "hardware-only" operating mode where an external

microprocessor is not required. This application is shown in Figure 1.

Figure 1 - Typical ATM Adapter UTP-5 Interface

SCI-PHY

Interface

Receive

AAL

Processor

ATM Terminal

Transmit

AAL

Processor

RCA

RXPRTY

RDAT[7:0]

RSOC

RRDENB

RFCLK

TXPRTY

TDAT[7:0]

TSOC

TFCLK

TWRENB

TCA

RXD+

RXD–

PM5350

S/UNI-155-ULTRA

TXD+

TXD–

REFCLK

Receive

MAGNETICS

Transmit

19.44 MHz

Oscillator

RJ-45

UTP-5 Facility

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 6

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