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| PMC-Sierra,Inc. Preliminary PM7325 S/UNI(R)-ATLAS-3200 2.4 Gbit/s ATM Layer Solution FEATURES * Monolithic single chip device which handles ATM Layer functions for one direction including VPI/VCI address translation, cell appending, cell rate policing, cell counting and OAM requirements for 64 k VCs (virtual connections). Two or more PM7325 S/UNI(R)-ATLAS-3200 devices can be cascaded to support additional VC's. * Instantaneous transfer rate of 3200 Mbit/s supports a cell transfer rate of 5.68x106 cells/s. * Can be configured as an Ingress mode device or an Egress mode device. * POS-PHY/UTOPIA Level 3 PHY and Switch interface supports a 32-bit 104 MHz interface. Extended cell format is supported (52 - 64 byte cell). Packets are not processed and are buffered and passed through transparently. Handles up to 48 logical PHY ports. * Supports a full duplex 16 bit 5 2MHz SCI-PHYTM Backwards Cell Interface Port which allows an Ingress mode device and an Egress mode device to communicate and behave as a single bi-directional device. * Supports a 64-bit (with or without parity) 125 MHz External Pipelined ZBT SRAM interface. * Includes a FIFO buffered 32-bit microprocessor bus interface for cell insertion and extraction, deterministic VC Table access, status monitoring and configuration of the device. * Per-PHY output buffering scheme resolves the head-of-line blocking issue. * Ingress and Egress functions include flexible search engines that cover the entire PHYID/VPI/VCI address range, dual leaky-bucket policing, per-VC cell counts, OAM-FM and OAM-PM processing. * Guaranteed Frame Rate (GFR) Policing with Minimum Cell Rate Frame Tagging. OAM * ITU-I.610 (1999) compliant OAM on both Ingress and Egress directions. * Complete Fault Management (AIS, RDI, CC) processing, for VP/VC, Segment/End-to-end flows on all VCs. * Complete Performance Monitoring processing, for VP/VC, Segment/Endto-end, Forward/Backward flows, on 512 Uni-directional VCs. * Per-PHY AIS/RDI generation. CELL COUNTING * Per-VC counts include CLP0 cells, CLP1 cells, OAM cells, RM cells, and invalid cells, cells violating the contract and total AAL5 frames. * Per-PHY counts include CLP0 cells, CLP1 cells, OAM cells, errored OAM cells, unassigned/invalid cells and policing violations. * Per-device counts include total cells received/transmitted, and physical layer cells. POLICING * ITU-I.371, ATM Forum TM4.1 compliant, per-VC programmable dual leaky-bucket policing with a programmable action (tag, discard, or count only) for each bucket, each with three programmable 16 bit noncompliant cell counts. * Per-PHY single leaky-bucket policing with a programmable action (tag, discard, or count only). BLOCK DIAGRAM Cell Flow 125 MHz Pipelined ZBT SRAM Interface JTAG JTAG Interface Packet Bypass SDQ Cell Processor Address Resolution UL3/PL3 32-bit 104 MHz Cell/Packet Interface Output SDQ Input SDQ UL3/PL3 32-bit 104 MHz Cell/ Packet Interface Policing, OAM, Statistics, Translation ICIF OCIF VC Table (EDRAM) IBCIF MPIF OBCIF SCI-PHY Rx Master Interface Microprocessor Interface SCI-PHY Rx Slave Interface PMC-1990444 (p2) PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE (c) Copyright PMC-Sierra, Inc. 2000 Preliminary PM7325 S/UNI(R)-ATLAS-3200 2.4 Gbit/s ATM Layer Solution PACKAGING * Provides a standard five signal P1149.1 JTAG test port for boundary scan board test purposes. * Implemented in low power, 0.18 micron, 1.5 V CMOS technology with 2.5 V embedded DRAM, 2.5 V external SRAM interface, and 3.3 V external interfaces (excluding the SRAM interface). * Packaged in a 768 pin Tape Ball Grid Array (TBGA) package. APPLICATIONS * Core ATM switches. * Wide Area Network ATM Core and Edge Switches. * ATM Enterprise and Workgroup Switches. * Broadband Access Multiplexers. TYPICAL APPLICATION S/UNI-ATLAS-3200 OC-48 PORT CARD APPLICATION UTOPIA or POS-PHY (Level 3) Ingress Direction Ingress Mode S/UNI-ATLAS3200 (+SRAM) Traffic Manager Switch Fabric PHY 16 bit SCI PHY (Backward Cell Interface) Egress Mode S/UNI-ATLAS3200 (+SRAM) Traffic Manager Egress Direction 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: document@pmc-sierra.com 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: info@pmc-sierra.com PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE PMC-1990444 (p2) (c) Copyright PMC-Sierra, Inc. 2000. All rights reserved. March 2000 S/UNI is a registered trademark of PMC-Sierra, Inc. SCI-PHY is a trademark of PMC-Sierra, Inc. |
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