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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
17
1
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
YES
YES
T3
(44.736 Mbit/s)
M23
YES
YES
YES
G.751
YES
YES
YES
E3
(34.368 Mbit/s)
G.832
YES
n/a
YES
J2
(6.312 Mbit/s)
G.704 & NTT
YES
n/a
YES
CRC-4
external
YES
YES
E1
(2.048 Mbit/s)
PCM30
external
YES
YES
ESF
external
YES
YES
T1
(1.544 Mbit/s)
SF
external
YES
YES
Arbitrary Cell Rate
(up to 52 Mbit/s)
Implements the ATM physical layer for Broadband ISDN according to ITU-T
Recommendation I.432.
bypass
n/a
YES
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.