product brief www.semtech.com monolithics SMI5027 56 gbps 16:2 multiplexer/cmu with dqpsk precoder product description SMI5027 is 16:2 multiplexer with on chip clock multiplier unit and dqpsk precoder that supports data rates up to 56gbps consistent with the sfi-5 standards. product highlights 4 user-enabled dqpsk precoder function 4 sfi-5 compliant fifo and deskew functions 4 dual ground-referenced high-speed single-ended output ports ? 0.3 to 0.7 volt pp se output level ? 11 psec (typical) rise/fall times ? 3.7 psec p-p total jitter (typical) ? data-to-data skew adjustments for each output data lane; +/- 0.25ui 4 high-speed differential clock outputs with highly stable clock-data skew and low phase noise ? full (27.8 nominal) and half-rate (13.9 ghz nominal) cml clocks ? skew control of +/- 0.5ui ? 0.8 volt pp differential output level 4 sonet-compliant clock multiplier unit (cmu) with vco 4 three user selectable reference clock input ports ? input reference clock rate is 1/4 th client-side baud rate: 862.500 to 884.375 mhz 4 reference clock clean-up loop circuitry 4 on-chip prws error checker and pattern generator: 2 7 -1 or 2 31 -1 industry-standard patterns ? on-chip error counter for measuring ber ? lane-by-lane error checking 4 spi control interface supports 1.2v or 1.8v lvcmos 4 temperature sense output voltage 4 dual-power supply voltages: +1.2 or +1.8v and -2.8v 4 low power consumption: 2.4 watts applications 4 otu4/100ge modules and transponders 4 ip routers and switches optical transport & datacom products si err a
product brief SMI5027-pb www.semtech.com monolithics 16: 1 d e s k e w txdata [ 15] p / n txdscp / n txdata [ 14] p / n txdata [ 1 ] p / n txdata [ 0 ] p / n reset _ n deskew _ en txdataout [ 1 ] c 2 txcksrcp / n refpll p / n phserr _ dnp / n 17 channel dll array hsclk [ 0 ] p / n txrefclkp / n txmclkp / n txm clk _ en - 1 . 6 v regulator phserr _ en frame _ epoch hsclk [ 1 ] p / n phserr _ upp / n txdckp / n sfi - 5 transmit controller v e e _ v c o v c c _ v c o v d d _ s f i 5 v c c v e e v d d d i g i t a l ptat temp . sensor c 1 r txdataout [ 0 ] prbs error checker d q p s k p r e c o d e r precoder _ en clock multiplier unit ( cmu ) ? ? hsclk 0 _ ph [ 7 : 0 ] dac hsclk 0 _ en txooa cmu _ lock frame _ lock tx _ temp r e f n 1 6 _ o u t x 4 pll dllclk _ sel frame _ epoch _ en wrclk _ 15 wrclk _ 0 . . . . . . 1 , ? ? hsclk 1 _ ph [ 7 : 0 ] dac 2 : 1 phase detect refsel 2 : 1 deskew correlator prbs pattern 2 7 / 2 31 - 1 . 6 v reference r e f n 1 6 _ i n frame header acquistion m u x ? txdata 1 _ ph [ 7 : 0 ] dac txdata 1 _ lvl [ 7 : 0 ] 17 xn channel fifo array txdata _ sel [ 1 : 0 ] 1 , ? hsclk 0 _ fsel dac txdata 0 _ ph [ 7 : 0 ] dac txdata 0 _ lvl [ 7 : 0 ] dac hsclk 1 _ fsel data _ 15 data _ 0 sfi - 5 block prbs block mux block c m u b l o c k r e f s e l e c t b l o c k adc temp data select fixed data dac hsclk 0 _ lvl [ 7 : 0 ] hsclk 1 _ en dac hsclk 1 _ lvl [ 7 : 0 ] txdata 1 _ en txdata 0 _ en s p i _ e n _ n s p i _ c l k s p i _ d i n s p i _ d o u t spi subsystem c o n t r o l d a c s c o n t r o l l o g i c s t a t u s txlf _ p txlf _ n diode temp . sensor gtemp _ p gtemp _ n resn resp 1 . 0 k bias current control select resistor v d d c o n t r o l v e e d i g i t a l v c c d i g i t a l sfi 5 compatabile i / o gnd referenced cml interface definitions ac coupled cml lvcmos ( 1 . 2 , 1 . 8 v ) SMI5027 block diagram 16:2 multiplexer/cmu with dqpsk precoder sierra monolithics inc. is now part of semtech incorporated. to view the most current product specifcations and datasheets, contact your local semtech field applications engineer. si err a
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