SMI Protocol Exerciser and Analyzer

SMI Protocol Analyzer (PGY-SMI-EX-PD) are the Protocol Analyzers with multiple features to capture and debug communication between host and design under test. PGY-SMI-EX-PD is the leading instrument that enables the design and test engineers to test the respective SMI designs for its specifications by configuring the PGY-SMI-EX-PD as Master/Slave, generating SMI traffic and decoding the SMI protocol decode packets.

SMI also called as Management Data Input/Output, or MDIO, is a 2-wire serial bus that is used to manage physical layer devices in media access controllers (MACs) in Gigabit Ethernet equipment. The management of these PHYs is based on the access and modification of their various registers.

SMI Protocol Exerciser and Analyzer

PGY-SMI-EX-PD is the leading instrument that enables the design and test engineers to test the SMI designs for its specifications by configuring PGY-SMI -EX-PD as master/slave, generating SMI traffic with error injection capability and decoding SMI Protocol packets.

he product features are as follows:

  • Supports SMI speeds of up to 25MHz
  • Ability to configure it as Master or Slave
  • Simultaneously generate SMI traffic and Protocol decode of the Bus
  • SMI Master and Slaves
  • Support for SMI Clause 22 & 45
  • Variable SMI data speeds and Duty cycle
  • Continuous streaming of protocol data to host computer to provides large buffer
  • Timing diagram of Protocol decoded bus
  • Listing view of Protocol activity
  • Ability to write exerciser script to combine multiple data frame generation at different data speeds
  • USB 2.0/3.0 host computer interface
  • API support for automation in Python or C++

Multi Domain view

Multidomain View provides the complete view of SMI Protocol activity in single GUI. User can easily setup the analyzer to generate SMI traffic using a GUI or script. User can  capture Protocol activity at specific event and decode the transition between Master and Slave. The decoded results can be viewed in timing diagram and Protocol listing window with autocorrelation. This comprehensive view of information makes it industry best, offering an easy to use solution to debug the SMI protocol activity.


PGY-SMI-EX-PD supports SMI traffic generation using GUI and Script. User can generate simple traffic generation using the GUI to test the DUT. Script based GUI provides flexibility to emulate the complete expected traffic in real world including error injections. In this sample script user can generate SMI traffic as below:

Script line #1: Set system Frequency 25MHz, CLK to DATA delay to 0ns, Duty cycle 50%, System inter message gap to 0us
Script line #3: WRITE
Script line #4: WRITE
Script line #5: READ
Script line #6: READ
Script line #7: WRITE

Timing Diagram and Protocol Listing View

Timing view provides the plot of MDC and MDIO signals with bus diagram. Overlaying of Protocol bits on the digital timing waveform will help easy debugging of Protocol decoded data. Cursor and Zoom features will make it convenient to analyze Protocol in timing diagram for any timings errors.

Protocol window provides the decoded packet information in each state and all packet details with error info in packet. Selected frame in Protocol listing window will be auto correlated in timing view to view the timing information of the packet.

Setup View

PGY-SMI-EX-PD supports both Clause 22 and Clause 45. Users can set this in the setup view according to their preference.

SMI Specifications

Ordering Information

PGY-SMI-EX-PD SMI Exerciser and Protocol Analyzer

Deliverables for PGY-UART -EX-PD

USB 3.0 cable
PGY- SMI -EX-PD Software in CD
12V DC adapter
Flying lead probe cable with female connector to connect to DUT

Warranty Information

Hardware Warranty – 2 years
Software and Firmware Warranty – 1 year
Probes (covered under warranty for any manufacturing defect) – 6 months

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