Product Brief OPTICAL TRANSPORT & DATACOM PRODUCTS SMI4038 45 to 49 Gbps 2:16 DQPSK CDR/Demultiplexer Product Description User-Selectable Reference Clock Inputs SPI Control Interfaces Supports 1.2V or 1.8V LVCMOS Temperature Sense Output Voltage Power Supplies: 1.2 to 1.8V, and -2.8V (Vee) Low Power Consumption: 3.1 Watts (typical) 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. 4 4 4 4 4 Product Highlights Applications 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 (CDR’s) with Full-Rate Recovered Clock Output 4 CDR Lock Status Indicators 4 On-Chip PRBS Error Checker and Pattern Generator: 27-1 or 231-1 Industry-Standard Patterns 4 100 mVp-p Input Sensitivity 4 Adjustable Input Threshold and Sample Clock Phase for each input channel 4 OC768/OTU3 Modules and Transponders 4 MSPP, ADM and Cross-connects 4 IP Routers and Switches W W W .SE MTE CH .COM SIERRA MONOLITHICS Product Brief SMI4038 Block Diagram — 45 to 49 Gbps 2:16 DQPSK CDR/Demultiplexer EXTLOS SEL Status Control Logic OR EXTLOS RXLF_N[1] RCLK1_EN RXDATAIN _DELAY 1[5:0] RCLK[1]P/N + TH_ADJ1[7:0] TH_ADJ0[7:0] Peak Det DAC RXDATAIN[0]P/N CDR Peak Det DAC Line Side Deskew RXDATAIN[1]P/N CDR + RXDATAIN_DELAY0[5:0] CDR Block SWAP_01 RXLF_P[0] DAC PH_ADJ0[4:0] C1 C2 R INVERT[1:0] RCLK[0]P/N RCLK0_EN SFI-5 Block PRBS Block DAC PH_ADJ1[4:0] GTEMP_P GTEMP_N Diode Temp. Sensor PRBS Error Checker Data Select Frame Generator RXDSCP/N RXDATA_EN . . . Fixed Data DECODER_EN R ADC ADC C1 C2 PRBS Pattern 27 /231 FRAME_EPOCH RESET_N Level Shift RXREFCK P/N Status Control DACs Control logic SPI Subsystem -1.6V Reference RXCKSRCP/N RXCLKSRC_EN RXMCLKP/N VDD_Control SPI_EN_N SPI_CLK SPI_DIN SPI_DOUT RXMCLK_EN VCC_Digital REFN16_OUT VEE_Digital VDD_Digital VEE REFN16_IN -1.6V Regulator TEMP VCC VDD_SFI5 VCC_VCO_1 VEE_VCO_1 VCC_VCO_0 VEE_VCO_0 ADC . . RXDATA[0] P/N RXDCKP/N Data Control PTAT Temp. Sensor RXDATA[15] P/N . RXDCK_EN RXLF_N[0] RX_TEMP 1.0 K RESN Select Resistor CDRLOCK_ERR_OR LOS_TH[7:0] PEAKDET 0[7:0 ] PEAKDET 1[7:0] Bias Current Control RXS CDR_LOCK_ERR[0] RXLF_P[1] > CDR_LOCK_ERR[1] > RESP Detector & Status RXS_SEL [1:0] TXDATA_ SEL[1:0] RXLOS[0] DQPSK Decoder RXLOS[1] Interface Definitions SFI5 compatabile I/O LVCMOS (1.2, 1.8V) GND referenced CML AC coupled CML Sierra Monolithics Inc. is now part of Semtech Incorporated. To view the most current product specifications and datasheets, contact your local Semtech Field Applications Engineer. W W W .SE MTE CH .COM SIERRA MONOLITHICS SMI4038-PB