The CN8223 ATM Transmitter/Receiver with UTOPIA Level 1 interface provides a single-access ATM service termination for User-to-Network (UNI) and Network-to-Network Interfacing (NNI) in conformance with ATM Forum UNI and NNI Specification 94/0317; Bellcore Specifications TR-TSV-000772, TR-TSV-000773, TR-NWT-000253, and T1S1/92-185; ITU Recommendations I.432, G.707, G.751, G.832, and Q.921; and ETSI prETS 300 213 and 300 214. Both Customer Premise Equipment (CPE) and switching system interface functions are provided.

Distinguishing Features

• Integrates 7 line framers with ATM

layer processing according to ATM

Forum UNI and NNI Specifications

• UTOPIA Level 1 interface

• Internal framers for DS3, E3 (G.751,

G.832), E4 (G.832), STS-1, STS-3c,

STM-1

• PLCP and G.804 HEC cell alignment

for all data rates from 1.544 Mbps to

155 Mbps

• Direct interface to TAXITM or external

T1/E1 framers

• ATM and SMDS cell modes

• 4 FIFO ports with header screening,

formatting, and transmit priority

controls

• Idle cells generated and screened

• Statistics counts latched on

one-second intervals

• Error detection and insertion

• Option insertion or generation of all

line and cell overhead

• Serial or parallel line interface

• Available evaluation module

reference design and software

• Supports Automatic Protection

Switching (APS)

Applications

• WAN equipment

• ATM switches

• Test equipment

• ATM routers and hub