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| PMC-Sierra,Inc. PM3390 * Each chip supports the EXACT Bus Protocol, which is a 10-bit, unidirectional insertion ring running at 125 MHz or 135 MHz. * EXACT Bus ports allow simple box-tobox, card-to-card, or chip-to-chip interconnect. * 8B/10B EXACT Bus encoding is compatible with Common Serialization (SERDES) devices to allow serial extension using coax or twinax cable. * Management interface connects to an off-chip microprocessor for access to internal control registers. Octal EXACTTM Bus Switch Matrix FEATURES * Sixteen Gbit/s, protocol-independent switching matrix expandable to 32 Gbit/s. * Provides eight gigabit, full-duplex EXACTTM Bus ports that each support an EXACT switch port controller. * Provides non-blocking connection between eight EXACT Bus (Ethernet Switching, Access, Control, and Termination) rings. * Supports non-blocking connections between sixteen EXACT Bus rings to provide a system bandwidth of 32 Gbit/s using four PM3390 devices. * Destination lookup table maps logical EXACT ports to physical PM3390 ports. Destination lookup table can be dynamically allocated. * Provides visibility into internal dataflow to allow external flow control in systems that do not use the EXACT Bus link protocol. PACKAGING * Provides a standard five signal P1149.1 JTAG test port for boundary scan board test purposes. * Implemented in low power 3.3 V, CMOS technology. * Available in a 352-pin Ball Grid Array (BGA) package. APPLICATIONS * High Bandwidth (16 to 32 Gbit/s) Ethernet Switches that Support Combinations of 10/100/1000 Ports. * Multiprotocol Switch (Ethernet, ATM, Packet Over SONET, FDDI, and TR) * Modular Ethernet Switches. * Fixed-configuration Ethernet Switches. COMPATIBILITY * Interworks with the following EXACT Chipset devices: PM3370 Octal 10/100 Ethernet Switch Port Controller with MII interfaces. PM3380 Gigabit Ethernet Switch Port Controller. BLOCK DIAGRAM 8 x EXACT Input Ports 8 x EXACT Output Ports XRXD[9:0] XRCLK Per Port Signals EXACT 8 Input Buffers Pipelined Data Mux Cell Central Store Pipelined Data Mux EXACT 8 Output Buffers XTXD[9:0] XTCLK Per Port Signals Free List Manager Cell List Manager JTAG Control Interface Management Interface Expansion Contol 4 Port Expansion Interface SYSCLK XREFCK135 XREFCK125 RESETI INT NFLOW[3:0] MI_AD[15:0] MI_ALE MI_RD MI_WR MI_CS XFLOWI XFLOWO XSTATI XSTATO XFRAMEI XFRAMEO TDI TDO TMS TCK TRSTB EXRXD[8:0] EXRXCLK PMC-980237 (R5) PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE (c) 1999 PMC-Sierra, Inc. PM3390 Octal EXACTTM Bus Switch Matrix TYPICAL APPLICATIONS 24 x 10/100 + 2 x 1000 WITH THREE GIGABIT BACKPLANE PORTS SERDES SERDES SERDES CPU PM3390 Octal EXACT Bus Switch Matrix PM3370 Octal 10/100 Ethernet Switch Port Controller PM3370 Octal 10/100 Ethernet Switch Port Controller PM3370 Octal 10/100 Ethernet Switch Port Controller PM3380 Gigabit Ethernet Switch Port Controller SERDES PM3380 Gigabit Ethernet Switch Port Controller SERDES 32 Gbit/s, 16-RING PM3390 EXPANSION CONFIGURATION EXACT Ring 0-3 EXACT Ring 8-11 PM3390 Octal EXACT Bus Switch Matrix EXACT Ring 0-3 EXACT Ring 4-7 EXACT Ring 12-15 PM3390 Octal EXACT Bus Switch Matrix EXACT Ring 4-7 PM3390 Octal EXACT Bus Switch Matrix EXACT Ring 8-11 PM3390 Octal EXACT Bus Switch Matrix EXACT Ring 12-15 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 PMC-980237 (R5) (c) 1999 PMC-Sierra, Inc. September, 1999 EXACT is a trademark of PMC-Sierra, Inc. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE |
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