PM7326 S/UNI-APEX PMC-Sierra,Inc. ATM/PACKET Traffic Manager and Switch FEATURES • Traffic queuing algorithm is highly configurable on a per connection, per class, and per port basis. • Configurable scheduling of 4 classes of service on every port, with rate shaping available for the 4 WAN ports. Configurable traffic parameters enabling a mix of CBR, VBR, GFR, and UBR classes. • Configurable OAM cell queuing and special handling on all ports. • VPI/VCI header mapping. • Supports 700 Mb/s ingress traffic and 700 Mb/s egress traffic aggregated across all ports. • Low power 3.3/2.5V CMOS. • Standard 5 pin P1149 JTAG port. • 352 ball SBGA, 35mm x 35mm. • ATM (fixed length cell) and packet/ frame traffic manager and switch. • 2048 line ports, 4 WAN ports, and a high speed microprocessor port. Any port to any port switching for 64k independent connections. • Manages up to 256k cell (16M byte) data buffer and 4M byte context memory shared over all ports. • Configurable progressive throttling of buffer consumption, with memory reservation under high consumption. Supports ABR with EFCI marking. • Buffer congestion controlled via Partial Packet Discard, Early Packet Discard (PPD/EPD). Cell at a time discard also supported. • For frame/packet flows: • Supports external wire speed HDLC processor, SAR, and flow classifier via packet-contiguous queuing and scheduling. • Error indication in AAL5 EOM trailer (set by SAR or classifier) can invoke errored packet discard, thereby eliminating need for packet buffers in external devices. PMC-990146 (P2) • Traffic discard thresholds configurable per connection (independent CLP0 and CLP1 thresholds), per class, per port, and per direction. • Guaranteed Frame Rate (GFR) implemented via CLP0 minimum buffer size reservation per connection. QUEUING & SCHEDULING • 64k traffic staging queues (one per connection) individually assignable to any CoS on any port. • 8k + 20 scheduling queues: 4 CoS queues per port, 2048 line ports, 4 WAN ports, and 1 processor port. CMAB[18:17] CMCEB CMRWB CMA[19:0] CMP[1:0] CMD[33:0] Loop Rx Any-PHY Que Management & Scheduling WAN Rx Any-PHY WAN Tx Any-PHY WTCLK WTPA WTSX WTSOP WTDAT[15:0] WTPRTY WTENB WTADR[2:0] TCK TRSTB TDI TMS TDO CBDQ[31:0] CBBS[1:0] CBDQM[1:0] CBA[11:0] CBCASB CBRWEB CBCSB CBRASB SYSCLK Loop Tx Any-PHY LTCLK LTPA LTSX LTSOP LTDAT[15:0] LTPRTY LTENB LTADR[11:0] JTAG Test Access Port SDRAM Interface OE WRCLK WRPA WRSX WRSOP WRDAT[15:0] WRPRTY WRENB WRADR[2:0] CONGESTION CONTROL SSRAM Interface RSTB LRCLK LRPA LRSX LRSOP LRDAT[15:0] LRPRTY LRENB LRADR[5:0] • 66 MHz, 32 bit address/data bus capable of single or burst access to internal registers and cell buffers. • Supports cell/packet transfer to/from any port, with CRC32 and CRC10 calculation supported in hardware. • Works seamlessly with S/UNI-VORTEX and S/UNI-DUPLEX to implement a system-wide embedded communication channel. • 8/16 bit, 52 MHz UTOPIA L2 bus. • Line side: • Enhanced UTOPIA Tx master supports 2048 ports. Rx master supports 32 ports. • Or single port slave. • WAN side: • Master (with optional cell length expansion) supports 4 Tx or Rx ports. Processor Interface Or single port slave. MICROPROCESSOR INTERFACE BUS INTERFACES BLOCK DIAGRAM Ctrl Lines AD[31:0] • PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE © 1999 PMC-Sierra, Inc. PM7326 S/UNI-APEX ATM/PACKET Traffic Manager and Switch PACKET ACCESS MULTIPLIER processor, flow co-processor S/UNIVORTEX é é é FREEDM é é é modem Cut-thru AAL5 Line Cards modem Flow Classifier S/UNIVORTEX S/UNIAPEX Cut-thru AAL5 + Classifier FREEDM Framer Common Card, working RAM S/UNI-DUPLEX processor processor, flow co-processor S/UNIVORTEX é é é S/UNIVORTEX Flow Classifier S/UNIAPEX Cut-thru AAL5 + Classifier RAM FREEDM Framer Common Card, protection 8 Links per S/UNI-VORTEX 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] PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE PMC-990146 (P2) © 1999 PMC-Sierra, Inc.