1 of 3 march 14, 2007 ? 2007 integrated device technology, inc. idt and the idt logo are trademarks of integrated device technology, inc. device overview the 89HPES16NT2 is a member of the idt precise? family of pci express? switching solutions offering the next-generation i/o inter- connect standard. the pes16nt2 is a 16-lane, 2-port peripheral chip that provides high-performance sw itching and non-transparent bridging (ntb) functions between a pcie? upstream port and an ntb down- stream port. the pes16nt2 is a part of the idt pcie system intercon- nect products and is intended to be used with idt pcie system interconnect switches. together, the chipset targets multi-host and intel- ligent i/o applications such as communications, storage, and blade servers where inter-domain communication is required. features high performance pci express switch ? sixteen pci express lanes (2.5gbps), two switch ports ? delivers 64 gbps (8 gbps) of aggregate switching capacity ? low latency cut-through switch architecture ? support for max payload size up to 2048 bytes ? supports one virtual channel and eight traffic classes ? pci express base specification revision 1.0a compliant flexible architecture with numerous configuration options ? supports automatic per port link width negotiation (x8, x4, x2, or x1) ? static lane reversal on all ports ? automatic polarity inversion on all lanes ? supports locked transactions, allowing use with legacy soft- ware ? ability to load device configuration from serial eeprom ? ability to control device via smbus non-transparent port ? crosslink support on ntb port ? four mapping windows supported ? each may be configured as a 32-bit memory or i/o window ? may be paired to form a 64-bit memory window ? interprocessor communication ? thirty-two inbound and outbound doorbells ? four inbound and outbound message registers ? two shared scratchpad registers ? allows up to sixteen masters to communicate through the non- transparent port ? no limit on the number of supported outstanding transactions through the non-transparent bridge ? completely symmetric non-transparent bridge operation allows similar/same configuration software to be run ? supports direct connection to a transparent or non-transparent port of another switch highly integrated solution ? requires no external components ? incorporates on-chip internal memory for packet buffering and queueing ? integrates sixteen 2.5 gbps embedded full duplex serdes, 8b/ 10b encoder/decoder (no separate transceivers needed) block diagram figure 1 internal block diagram 16 pci express lanes x8 upstream port and one x8 downstream port 2-port switch core frame buffer route table port arbitration scheduler serdes phy logical layer serdes phy logical layer serdes phy logical layer ... multiplexer / demultiplexer transaction layer data link layer serdes phy logical layer serdes phy logical layer serdes phy logical layer ... multiplexer / demultiplexer transaction layer data link layer non- transparent bridge 89HPES16NT2 product brief 16-lane 2-port non-transparent pci express? switch
2 of 3 march 14, 2007 idt 89HPES16NT2 product brief reliability, availability, and serviceability (ras) features ? internal end-to-end parity protection on all tlps ensures data in tegrity even in systems that do not implement end-to-end crc ( ecrc) ? supports ecrc pass-through ? supports hot-swap power management ? supports pci power management interface specification, revision 1.1 (pci-pm) ? unused serdes are disabled testability and debug features ? built in serdes pseudo-random bit stream (prbs) generator ? ability to read and write any internal register via the smbus ? ability to bypass link training and force any link into any mode ? provides statistics and performance counters two smbus interfaces ? slave interface provides full access to all softwar e-visible registers by an external smbus master ? master interface provides connection for an op tional serial eeprom used for initialization ? master interface is also used by an external hot-plug i/o expander ? master and slave interfaces may be tied together so the switch can act as both master and slave eight general purpose input/output pins packaged in a 23mm x 23mm 484-ball bcg with 1mm ball spacing product description utilizing standard pci express interconnect, the pes16nt2 provides the most efficient high-performance i/o connectivity solutio n for applications requiring high throughput, low latency, and simple board layout wit h a minimum number of board layers. with support for non-tra nsparent bridging, the pes16nt2 is part of the idt pcie system interconnect products that target multi-host and intelligent i/o applications requiring inter-domain commu- nication. the pes16nt2 provides 64 gbps (8 gbps) of aggregated, full-duplex switching capacity through 16 integrated serial lan es, using proven and robust idt technology. each lane provides 2.5 gbps of bandwidth in both directions and is fully compliant with pci express base specification 1.0a. the pes16nt2 is based on a flexible and efficient layered architec ture. the pci express layer consists of serdes, physical, dat a link, and trans- action layers in compliance with pci express base specificati on revision 1.0a. the pes16nt2 can operate either as a store and f orward or cut- through switch depending on the packet size and is designed to swit ch memory and i/o transactions. it supports eight traffic cl asses (tcs) and one virtual channel (vc) with sophisticated resource management.
3 of 3 march 14, 2007 idt 89HPES16NT2 product brief corporate headquarters 6024 silver creek valley road san jose, ca 95138 for sales: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com for tech support: email: ssdhelp@idt.com phone: 408-284-8208 figure 2 embedded compute application - processors with and without address translation unit (atu) functionality rc processor up pcie system interconnect switch dp dp dp dp dp dp ... ... pes12nt3 pes12nt3 pes12nt3 pes12nt3 pes12nt3 ... pes12nt3 ... ep processor w/o atu ep processor w/o atu ep processor w/o atu ep processor w/o atu ep processor w/o atu ep processor w/o atu
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