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S/UNI®-JET Data Sheet

Released

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

Document ID: PMC-1990267, Issue 3

Features

The S/UNI®-JET is a single chip Asynchronous Transfer Mode (ATM) User Network Interface

(UNI) operating at 44.736 Mbit/s, 34.368 Mbit/s, and 6.312 Mbit/s that:

• Conforms to AF-Physical (PHY)-0054.000, AF-PHY-0034.000 and AF-PHY-0029.000.

• Implements ATM Direct Cell Mapping into DS1, DS3, E1, E3, and J2 transmission systems

according to ITU-T Recommendation G.804.

• Provides a UTOPIA Level 2 compatible ATM-PHY Interface.

• Implements the Physical Layer Convergence Protocol (PLCP) for DS1 and DS3 transmission

systems according to the ATM Forum User Network Interface Specification and ANSI TA-

TSY-000773, TA-TSY-000772, and E1 and E3 transmission systems according to the ETSI

300-269 and ETSI 300-270.

• Supports Switched Multi-megabit Data Service (SMDS) and ATM mappings into various rate

transmission systems as shown in Table 1:

Table 1 Supported Operating Formats

Rate

Format

Framer Only

SMDS PLCP

Mapping

ATM Direct

Mapping

C-bit Parity

YES

(44.736 Mbit/s)

M23

YES

G.751

YES

(34.368 Mbit/s)

G.832

YES

n/a

YES

(6.312 Mbit/s)

G.704 & NTT

YES

n/a

YES

CRC-4

external

YES

(2.048 Mbit/s)

PCM30

external

YES

ESF

external

YES

(1.544 Mbit/s)

external

YES

Arbitrary Cell Rate

(up to 52 Mbit/s)

bypass

n/a

YES

• Implements the ATM physical layer for Broadband ISDN according to ITU-T

Recommendation I.432.

• Provides on-chip DS3, E3 (G.751 and G.832), and J2 framers.

• Is configurable for sole DS3, E3, or J2 Framer use.

Note: When configured to operate as a DS3, E3, or J2 Framer, gapped transmit and receive clocks

can be optionally generated for interface to devices which only need access to payload data bits.

• Provides support for an arbitrary rate external transmission system interface up to a maximum

rate of 52 Mbit/s, which enables the S/UNI-JET to be used as an ATM cell delineator.

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