FEATURES
• Single chip 16-channel ATM and POS User Network Interface operating at 155 Mbit/s.
• Implements the ATM Forum User Network Interface Specification and the ATM physical layer for Broadband ISDN according to CCITT Recommendation I.432.
• Implements the Point-to-Point Protocol (PPP) over SONET/SDH specification according to RFC 2615(1619)/1662 of the PPP Working Group of the Internet Engineering Task Force (IETF).
• Processes sixteen bit-serial 155 Mbit/s STS-3c (STM-1) data streams with onchip clock and data recovery and clock synthesis.
• Complies with Bellcore GR-253-CORE jitter tolerance, jitter transfer and intrinsic jitter criteria.
• Each channel provides termination for SONET Section, Line and Path overhead or SDH Regenerator Section, Multiplexer Section and High Order Path overhead.
• Provides UTOPIA Level 3 32-bit wide System Interface (clocked up to 104 MHz) with parity support for ATM applications.
• Provides SATURN® POS-PHY Level 3™ 32-bit System Interface (clocked up to 104 MHz) for Packet over SONET (POS), or ATM applications.
• Supports line loopback from the line side receive stream to the transmit stream and diagnostic loopback from the line side transmit stream to the line side receive stream interface.
• Provides support for automatic protection switching including a bidirectional 4-bit PECL 622 MHz port for external APS with mate device.
• Built-in APS cross-connect for internal and external 1+1 and 1:n protection switching.
• Provides a standard five signal IEEE 1149.1 JTAG test port for boundary scan board test purposes.
• Provides a generic 16-bit microprocessor bus interface for configuration, control, and status monitoring.
• Low power 2.5 V CMOS core logic with 3.3 V CMOS/TTL compatible digital inputs and digital outputs. PECL inputs and outputs are 3.3 V compatible.
• Industrial temperature range (-40 °C to +85 °C).
• 520 pin SBGA package.
• Pin and software compatible with the PM5358 S/UNI-4x622.

APPLICATIONS
• ATM and Multiservice Switches, Routers, and Switch/Routers.
• SONET/SDH Add/Drop Multiplexers with data processing capabilities
• Uplink Cards.
• SONET/SDH ATM/POS Test Equipment.
• SONET/SDH Transport Equipment.