VSC3139 4.2 gbps 72 x 72 asynchronous crosspoint switch network product pb-VSC3139-002 features: 4 .2 gbps, 72x72 strictly nonblocking switch matrix with dual user configuration registers and multicast and address striping programming modes 3rd generation input signal equalization (ise) 'eye opener' technology with global and per channel multilevel programmable control at-speed built-in self-test (bist) capability with auxiliary drive and sense i/o, on board prbs generator/detector, and programmable temperature alarm/sensor global and per channel programmable cml output level control with integrated back termination parallel and serial programming modes with secondary serial access port for configuration and monitoring software control to optimize power dissipation benefits: 4.2 gbps nrz performance provides protocol transparency with exceptional performance and margin for 2.5 gbps and 3.125 gbps switching applications. advanced ise ('eye opener') capabilities to re duce inter symbol interference (isi) due to pcb losses and/or copper cable losses to enable longer back planes or shelf to shelf interconnects. bist (system) features enable simplified design, verification, production testing at the board or system level, and in application signal monitoring. enhanced signal integrity and package design for ease of pcb design applications: large 3 stage clos fabrics of up to 2,880x2,880 i/o ports with up to 10tb/s of data throughput dwdm switches wa velength routers storage area network (san) switch fabrics packet switching fabrics markets: core and metro transport enterprise high-speed automated test equipment broadcast video specifications: 3.6 gbps nrz data rate 2 .5v power supply [2.5v/3.3v program port power supply] 2.5v/3.3v cmos ttl compatible i/o d ifferential cml i/o with integrated termination impedance 4.4w typical power dissipation with output levels 33x33mm, 1.27mm pitch, 613 bga package 0?c to +85?c operating temperature range
741 calle plano camarillo, ca 93012, usa te l: +1 805.388.3700 fax: +1 805.987.5896 www.vitesse.com for more information on vitesse products visit the vitesse web site at www.vitesse.com or contact vitesse sales at (800) vitesse or sales@vitesse.com vitesse, asic-friendly, fibretimer, timestream and snoop loop are trademarks of vitesse semiconductor corporation. all other trademarks or registered trademarks mentioned herein are the property of their respective holders. vitesse semiconductor corporation ("vitesse") retains the right to make changes to its products or specifications to improve performance, reliability or manufacturability. all information in this document, including descriptions of features, functions, performance, technical specifications and availability, is subject to change without notice at any time. the VSC3139 is a 72x72 asynchronous crosspoint switch, designed to carry broadband data streams. the fully non- blocking switch core is programmed through a mu lti-mode port interface that allows random access programming of each input/output port. a high degree of signal integrity is ma intained throughout the chip by fully differential signal paths. each data output can be programmed to connect to one of the 72 inputs. the signal path is unregistered and fully asynchronous, so there are not any restrictions on the phase, frequency, or signal pattern on any input. each high-speed output is a fully differential switched current driver with on- die terminations for maximum signal integrity. data inputs are terminated on die through 100 ? resistors between true and complement inputs with a common connection to an internal bias source, facilitating ac-coupling to the switch inputs. a multi-mode, programming interface is provided that allows commands to be sent as serial data or multiplexed parallel general description: 4.2 gbps 72 x 72 asychronous crosspoint switch data. core programming can be sequential on a port by port basis, or multiple program assignments can be queued and issued simultaneously using the config bit. the init feature will reset the entire switch into a "straight-through" configuration (a0 to y0, a1 to y1, etc.) or it can be programmed by the user to initialize to any other configuration. programming of the VSC3139 is via an 11-bit mu ltiplexed addr/data bus in conjunction with the ale, rd, wr, config and init pins. additionally, the config and init signals can be set via an internal control register to reduce the number of signals required to interface with the switch. to lock-in programming of switch connections, init, and config can be disabled through software. unused channels may be powered down to allow efficient use of the switch in applications that require only a subset of the channels. power-down is enabled in software by programming individual unused outputs with a power-down code. a secondary access port allows asynchronous readback and configuration control to take place while the primary programming port is in use. VSC3139 eye opener input signal equalization perfromance: signal through 50? of microstrip trace signal through 150? of microstrip trace signal output with ise enabled signal output with ise enabled
|
