S/UNI®-JET Data Sheet
Released
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:
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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.
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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.
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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
M23
G.751
G.832
G.704 & NTT
YES
YES
YES
YES
YES
YES
YES
YES
n/a
YES
YES
YES
YES
YES
T3
(44.736 Mbit/s)
E3
(34.368 Mbit/s)
J2
n/a
(6.312 Mbit/s)
E1
(2.048 Mbit/s)
CRC-4
PCM30
ESF
external
external
external
external
bypass
YES
YES
YES
YES
n/a
YES
YES
YES
YES
YES
T1
(1.544 Mbit/s)
Arbitrary Cell Rate
(up to 52 Mbit/s)
SF
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Implements the ATM physical layer for Broadband ISDN according to ITU-T
Recommendation I.432.
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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.
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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.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990267, Issue 3
17
PMC [ PMC-SIERRA, INC ]
