PM5348 S/UNI-155-DUAL PMC-Sierra,Inc. Two-Channel ATM SATURN User Network Interface FEATURES • Provides two independent SATURN®compatible ATM PHY channels in one chip. • Provides hardware and software backward compatibility with the industry-standard PM5346 S/UNI®-155-LITE chip. • Implements the ATM Transmission Convergence (TC) sublayer according to ATM Forum specifications using the SONET/SDH 155.52 Mbit/s STS-3c/ STM-1 and SONET 51.84 Mbit/s STS-1 formats. • NRZ data format supports category-5 Unshielded Twisted Pair (UTP-5) or Shielded Twisted Pair (STP) wiring and optical datalink modules for fiber optic cable. • Includes on-chip clock recovery and clock synthesis, compliant to Bellcore and ITU-T requirements. • Operates in timing master or timing slave (loop timed LAN) modes. • Frames to SONET framing bytes (A1, A2), processes the section and line Bit Interleaved Parity (B1, B2) and the Far-End Block Error (Z2) bytes. • Interprets the H1, H2, and H3 payload pointer bytes. • Processes the SONET path overhead BIP-8 (B3), signal label (C2) and path status (G1) bytes. • Allows for protection switching by monitoring the APS (K1, K2) bytes, bit error rate thresholds and far-end synchronization status (S1) bits and providing interrupts when error conditions are detected.* • Inserts and extracts ATM payloads using ATM cell delineation. • Provides on-chip 4-cell FIFO buffers in both transmit and receive paths. • Operates with a backward compatible dual 8-bit plus parity or a multi-PHY compatible 16-bit plus parity* SATURN-Compliant Interface for PHYsical layer devices (SCI-PHY™). • Cell interface is also compatible with ATM Forum Level 2 UTOPIA directmode specifications. • Provides a generic 8-bit microprocessor bus interface for configuration, control, and monitoring. • Provides TTL/CMOS compatible inputs and outputs and differential PECL inputs. • Low power, +5 V CMOS technology. • Packaged in a 28 mm by 28 mm 160pin Plastic Quad Flat Pack (PQFP). *NOTE:Indicates new features not provided on S/UNI-155-LITE. APPLICATIONS • ATM Switches and Hubs • ATM Routers • Multichannel ATM Servers RXD1+ RXD1- Clock and Data Recovery ALOS1+ ALOS1TFP Serial to Parallel Receive Framer and Overhead Processor Parallel to Serial Transmit Framer and Overhead Processor System Side TCLK RFP LF1+ LF1LFO1 Line Side RCLK1 BLOCK DIAGRAM Receive ATM Cell Processor Receive ATM 4-Cell FIFO TSOC[2:1] TXPRTY[1:0] TDAT[15:0] TXD1+ TXD1REFCLK+ REFCLKTATP Driver Clock Generator TXD2+ TXD2- Driver Parallel to Serial Transmit Framer and Overhead Processor Transmit ATM Cell Processor Transmit ATM 4-Cell FIFO Transmit ATM Cell Processor Transmit ATM 4-Cell FIFO Receive ATM Cell Processor Receive ATM 4-Cell FIFO TCA[2:1] TWRENB[2:1] SCI-PHY Interface TFCLK RSOC[2:1] RXPRTY[1:0] RDAT[15:0] RCA[2:1] RRDENB[2:1] Clock and Data Recovery ALOS2+ ALOS2- Serial to Parallel Receive Framer and Overhead Processor PMC-950446 (R4) Output Port Microprocessor Interface RALM1 RALM2 OUT1 OUT2 D[7:0] A[8:0] ALE CSB WRB RDB RSTB INTB RCLK2 LF2LFO2 LF2+ Analog Edge RFCLK TSEN JTAG TDO TDI TCK TMS TRSTB RXD2+ RXD2- © 1998 PMC-Sierra, Inc. October, 1998 PM5348 S/UNI-155-DUAL Two-Channel ATM SATURN User Network Interface TYPICAL APPLICATIONS Split 8-bit bus mode for backward compatibility with multiple single-PHY applications. Applications: • Multi-SAR Servers • Single-channel, 8-bit, 25 MHz ATM Layer Devices Shared 8-bit bus mode for 8-bit direct mode multi-PHY applications. Applications: • Two-channel, 8-bit, 50 MHz ATM Layer Devices Shared 16-bit bus mode for 16-bit direct mode multi-PHY applications. Applications: • Four-channel, 16-bit, 50 MHz ATM Layer Devices Independent 25 MHz, 8-Bit Buses ATM Layer ASIC or SAR ASIC PM5348 S/UNI®-155-DUAL Two-Channel ATM SATURN® User Network Interface ATM Layer ASIC or SAR ASIC Shared 50 MHz, 8-Bit Buses PM5348 S/UNI®-155-DUAL Two-Channel ATM SATURN® User Network Interface ATM Layer ASIC Shared 50 MHz, 16-Bit Buses PM5348 S/UNI®-155-DUAL Two-Channel ATM SATURN® User Network Interface ATM Layer ASIC PM5348 S/UNI®-155-DUAL Two-Channel ATM SATURN® User Network Interface Head Office: PMC-Sierra, Inc. #105 - 8555 Baxter Place Burnaby, B.C. V5A 4V7 Canada Tel: 604.415.6000 Fax: 604.415.6200 To order documentation, send email to: [email protected] or contact the head office, Attn: Document Coordinator All product documentation is available on our web site at: http://www.pmc-sierra.com For corporate information, send email to: [email protected] PMC-950446 (R4) © 1998 PMC-Sierra, Inc. October, 1998 SATURN, SCI-PHY and S/UNI are trademarks of PMC-Sierra, Inc.