High Speed Digital System Lab Final Presentation 1 semester project  Instructor: Mony Orbach  Students: Pavel Shpilberg Ohad Fundoianu

 Acquaintance and Learning noise sources and physical attributes of High Speed Digital Channels.  Implementation of SerDes transceiver up to 3Gbps on ALTERA Stratix2GX SI Development board.  Watching, measuring and understanding Signal Integrity phenomena.  Design a high speed 4 channels transmitter for academic research.

 QUARTUS  Stratix 2GX and Signal Integrity Development Board  Agilent 8000B Series Infiniium Oscilloscope

 HS Digital Channel Definition:  Amplitude Dependent Noise: CT, ISI, Timing, PS  Independent Noise: Skin effect, Ohmic and Dielectric loss, EMI  Jitter : RJ-DJ Example: CRU disturbed by Jitter

 PLL - Phase Locked Loop: Used for filtering noise and achieving high rates  8/10b - DC-balanced coding which prevents errors insures right sampling of the signal.

memory Transmitter Scope Receiver FPGAGX FPGA Digital validation Analog validation

Phase compensation Byte serializer * 8B/10B Encoder * Serializer PLL

Word Aligner Deserializer PLL+CRU Byte Deserializer * 8B/10B Decoder * Rate matcher * Phase compensation

 Single Transiver with effective data rate of up to 3.25 Gbps. memory TransmitterReceiver  Single Transiver with effective data rate of up to Gbps. memory TransmitterReceiver  Single Transiver with CRU (clock recovery unit) turned off. memory TransmitterReceiver clk  Four transmiters on single chip- each one in different freq, and different line type (long,stripline, microstripline). memory Transmitter Receiver  Features: Transfer data from memory to memory with high rate  Features: The highest frequency possible on this transiver  Features: Both transmitter and receiver get clocks (different ones).  Synchronization depends on data.  Features: Each transceiver in different block- requires different clock connection to each of the trancievers.

 Serial data 2496Mbps signal - 40” Line Regular StripLine

 Serial data 2496Mbps signal 40” Line Regular StripLine

 1248Mbps signal – Regular StripLine Clock signal Serial data

 Pre-Tap First Post-Tap Second Post-Tap

 Four random data outputs at Gbps rate  All four outputs are aligned and have constant delay (delay between different channels is constant and does not change on reset, or turn down)  The design is saved in EPCS64 chip so there is no need to reconfigure the device when turning on  An output clock indicates when data cycle is done  Data cycle length can be easily changed to any number (2 n-3 · 10 for all n)  All four channels must be the same type (strip line)

Transmiter XAUI Parallel clk mem counter mem