product brief www.semtech.com monolithics SMI4038 45 to 49 gbps 2:16 dqpsk cdr/demultiplexer product description SMI4038 accepts single-ended 45 to 49 gbps nrz serial data streams and demultiplexes the data into sixteen parallel output channels consistent with the sfi-5 standard. product highlights 4 2:16 cdr/demultiplexer with integrated dqpsk decoder function 4 dual ground-referenced serial input ports operating at rates from 22.5 to 24.5 gbaud 4 ground-referenced serial input ports 4 sfi-5+ compatible data and clock interfaces 4 dual on-chip clock and data recovery units (cdrs) with full-rate recovered clock output 4 cdr lock status indicators 4 on-chip prbs error checker and pattern generator: 2 7 -1 or 2 31 -1 industry-standard patterns 4 100 mvp-p input sensitivity 4 adjustable input threshold and sample clock phase for each input channel 4 user-selectable reference clock inputs 4 spi control interfaces supports 1.2v or 1.8v lvcmos 4 temperature sense output voltage 4 power supplies: 1.2 to 1.8v, and -2.8v (v ee ) 4 low power consumption: 3.1 watts (typical) applications 4 oc768/otu3 modules and transponders 4 mspp, adm and cross-connects 4 ip routers and switches optical transport & datacom products si err a
product brief SMI4038-pb www.semtech.com monolithics or cdrlock _ err _ or status control logic extlos sel rxs rxs _ sel [ 1 : 0 ] rxdata [ 15 ] p / n rxdata [ 0 ] p / n rxmclkp / n rxmclk _ en rxcksrcp / n rxdscp / n rxdckp / n . . . rxdck _ en rxdata _ en reset _ n rxdatain [ 1 ] p / n rxdatain [ 0 ] p / n dac ph _ adj 1 [ 4 : 0 ] cdr rclk [ 1 ] p / n rclk [ 0 ] p / n rclk 1 _ en c d r _ l o c k _ e r r [ 1 ] c d r _ l o c k _ e r r [ 0 ] rxrefck p / n + dac dac cdr prbs error checker prbs block d q p s k d e c o d e r rxlf _ p [ 1 ] rxlf _ n [ 1 ] c 2 c 1 r peak det ph _ adj 0 [ 4 : 0 ] th _ adj 1 [ 7 : 0 ] + dac rxlf _ p [ 0 ] rxlf _ n [ 0 ] c 2 c 1 r rclk 0 _ en s w a p _ 0 1 rxdatain _ delay 0 [ 5 : 0 ] i n v e r t [ 1 : 0 ] d e c o d e r _ e n peakdet 0 [ 7 : 0 ] - 1 . 6 v regulator v e e _ v c o _ 0 v c c _ v c o _ 0 v d d _ s f i 5 v e e v c c ptat temp . sensor rx _ temp r e f n 1 6 _ o u t - 1 . 6 v reference r e f n 1 6 _ i n adc tem p rxclksrc _ en sfi - 5 block detector & status cdr block t x d a t a _ s e l [ 1 : 0 ] prbs pattern 2 7 / 2 31 data control fixed data data select frame generator peak det sfi 5 compatabile i / o gnd referenced cml interface definitions ac coupled cml lvcmos ( 1 . 2 , 1 . 8 v ) a d c a d c > > extlos r xlos [ 1 ] r xlos [ 0 ] peakdet 1 [ 7 : 0 ] th _ adj 0 [ 7 : 0 ] los _ th [ 7 : 0 ] 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 control dacs control logic status resn resp 1 . 0 k bias current control sel ect r esi stor . . . v d d _ d i g i t a l v e e _ d i g i t a l v c c _ d i g i t a l v d d _ c o n t r o l v e e _ v c o _ 1 v c c _ v c o _ 1 diode temp . sensor gt emp _ p gt emp _ n rxdatain _ delay 1 [ 5 : 0 ] l i n e s i d e d e s k e w level shift frame _ epoch SMI4038 block diagram 45 to 49 gbps 2:16 dqpsk cdr/demultiplexer 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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