SMI4028 Datasheet, PDF (2/2 Pages) Semtech Corporation – 45 to 49 Gbps 16:2 Multiplexer/CMU with DQPSK Precoder

Product Brief
SMI4028 Block Diagram — 16:2 Multiplexer/CMU with DQPSK Precoder
TXDATA[15]P/N
TXDATA[14]P/N
TXDATA[1]P/N
TXDATA[0]P/N
TXDSCP/N
TXDCKP/N
TXMCLKP/N
FRAME_EPOCH
RESET_N
TX_TEMP
GTEMP_P
GTEMP_N
Bias Current
Control
DATA_15
WRCLK_15
...
17
Channel
...
17xN
Channel
FIFO
Array
DLL
Array
DATA_0
WRCLK_0
2:1
X4
PLL
DLLCLK _ SEL
TXMCLK_EN
FRAME_LOCK
FRAME_EPOCH _EN
Frame
Header
Acquistion
PRBS
Error
Checker
Data Select
PRECODER_EN
TXDATA _SEL [ 1:0 ]
Select Resistor
Mux Block
TXDATA0_LVL [7:0]
TXDATA 0_ PH[7: 0]
DAC
DAC
TXDATA0
_EN
∆φ
PRBS
Pattern
2⁷ /2³¹
Fixed
Data
PRBS Block
16:
1
∆φ
TXDATA1_PH [7:0]
TXDATA 1_ LVL [7 :0]
DAC
TXDATA1
_EN
DAC
HSCLK0_FSEL
HSCLK 0_ PH[7 :0]
DAC
HSCLK1_FSEL
HSCLK 1_ PH[7 :0]
DAC
Clock
Multiplier
Unit (CMU)
1, ½
∆φ
HSCLK 0_
LVL [7:0]
HSCLK0
_EN
DAC
1, ½
∆φ
HSCLK 1_
LVL [7:0]
HSCLK1
_EN
DAC
CMU_LOCK
Deskew
Correlator
REFSEL
2:1
PHSERR_EN
DESKEW _EN
TXOOA
SFI-5 Transmit
Controller
Phase
Detect
PTAT Temp.
Sensor
Diode Temp.
Sensor
ADC TEMP
SFI-5 Block
-1.6V
Regulator
-1.6V
Reference
SPI Subsystem
RESP
RESN
1.0 K
TXDATAOUT[0]
TXDATAOUT[1]
HSCLK[0]P/N
HSCLK[1]P/N
TXLF_P
C1
R
C2
TXLF_N
TXCKSRCP/N
PHSERR_UPP/N
PHSERR_DNP/N
REFPLL P/N
TXREFCLKP/N
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.
SIERRA
MONOLITHICS
WWW.SEMTECH.COM
SMI4028-PB