Features: • Monolithic single-chip ATM User- Network Interface (UNI) for DS3, E3, DS1, and E1 Plesiochronous Digital Hierarchy (PDH) applications.
• Provides on-chip DS3 (M23 or C-bit parity) and E3 (G.751 and G.832) framers.
• Implements the ATM direct cell mapping into DS1, DS3, E1, and E3 transmission systems according to ITU-T Recommendation G.804.
• Implements the ATM physical layer for Broadband ISDN according to ITU-T Recommendation I.432.
• 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 ETSI 300-269 and ETSI-270.
• Provides UTOPIA L1-compliant ATMPHY interface.
• Supports DS3 FEAC code insertion/ detection and provides an integral HDLC transceiver for path maintenance datalink processing.
• Supports G.832 Trail Trace and provides an integral HDLC transceiver that supports the Network Requirement or General Purpose datalinks.
• Provides detection of DS3/E3 Loss Of Frame (LOF) and yellow alarm.
• Accumulates BIP-8, framing and FEBE events.
• Provides ATM cell scrambling/
descrambling, HCS error detection and correction, HCS insertion, idle/ unassigned ATM cell filtering and insertion, and accumulates counts of transmitted and received cells.
• Provides DS3/E3 diagnostic loopback, line loopback, payload loopback and ATM cell loopback.
• Provides support for an arbitrary rate external transmission line interface up to a maximum rate of 52 Mbit/s.
• Uses PMC-Sierra PM4341A T1XC T1, PM6341 E1XC E1, or PM4351 COMET framer/line interface devices for DS1, E1, and J1 ATM UNI applications.
• Software-compatible with the PM4341A T1XC, PM6341 E1XC, PM4351 COMET, PM5346 S/UNI®- LITE, and PM7344 S/UNI-MPH.
• Application-compatible with the PM8313 D3MX, PM4314 QDSX, and PM7323 RCMP-200.
• Provides an 8-bit microprocessor interface for configuration, control, and status monitoring.
• Low power CMOS technology.
• Available in a high density 100-pin PQFP package (14 by 14 mm).
Application• ATM Switches
• ATM Routers
• ATM Network Interfaces
• DSLAMs
• ATM / SMDS Test Equipment
PM7345 Data Sheet
