PM5356 datasheet(20/307 Pages) PMC

20 / 307 page

RELEASED

S/UNI-622-MAX

PMC-Sierra, Inc.

PM5356

S/UNI-622-MAX

DATASHEET

PMC-1980589

ISSUE 6

SATURN USER NETWORK INTERFACE (622-MAX)

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

APPLICATION EXAMPLES

The PM5357 S/UNI-622-MAX is applicable to equipment implementing

Asynchronous Transfer Mode (ATM) User-Network Interfaces (UNI) and ATM

Network-Network Interfaces (NNI).

The S/UNI-622-MAX may find application at either end of switch-to-switch links

or switch-to-terminal links, both in public network (WAN) and private network

(LAN) situations. The S/UNI-622-MAX performs the mapping of ATM cells into

the SONET/SDH STS-12c/STM-4-4c synchronous payload envelope (SPE) and

processes applicable SONET/SDH section, line and path overheads.

In a typical STS-12c/STM-4-4c ATM application, the S/UNI-622-MAX performs

clock and data recovery in the receive direction and clock synthesis in the

transmit direction of the line interface. The S/UNI-622-MAX can also be

configured to by-pass the clock recovery, clock synthesis, and serializer/de-

serializer functions. In this mode, an external clock and data recovery/serial-to-

parallel converter device is required in the receive direction, and an external

serial-to-parallel converter/clock synthesis device is required in the transmit

direction.

On the system side, the S/UNI-622-MAX interfaces directly with ATM layer

processors and switching or adaptation functions using a UTOPIA Level 2

compliant 16-bit (clocked up to 50 MHz) or an UTOPIA Level 3 8-bit (clocked up

to 100 MHz) synchronous FIFO style interface.

An application with a UTOPIA Level 2 system side interface is shown in Figure 1.

An application with a UTOPIA Level 3 system side is shown in Figure 2. The

initial configuration and ongoing control and monitoring of the S/UNI-622-MAX

are normally provided via a generic microprocessor interface.

PM5356 Datasheet(PDF) 20 Page - PMC-Sierra, Inc