Scalable Memory Interconnect Solutions

SMI Logic Analyzer Interface for Digital Validation

Nexus Technology SMI-LAI products allow for logic analyzer acquisition and analysis of SMI-LAI links (Scalable Memory Interconnect - Logic Analyzer Interface). This interface allows for acquisition of SMI-LAI channel traffic for command, address, read and write data analysis of SMI DDR3 traffic.

SMI Logic Analyzer Interface

The core of the SMI-LAI solution is the NEX-SMILAI which provides a quick and easy connection to interface a logic analyzer to two, 240-pin, DDR3 memory slots to probe one SMI channel in SMI-LAI mode (logic analyzer interface mode). Also included with this product is the logic analyzer setup software. Tektronix refers to this as a support package which provides everything necessary to quickly and easily configure your logic analyzer, setup logic analyzer acquisition, setup the logic analyzer trigger/storage, and decode the acquired data.

SMI DDR3 Protocol Violation Analysis

There's a BIG difference between protocol decode and protocol violation analysis. Protocol decoding provides a static tabulation of command and address bus activity. This functionality is made available through the logic analyzer listing window using the Nexus Technology SMI support package/setup software. Performing a very different and powerful set of tasks, protocol violation analysis analyzes the entire logic analyzer memory, compiling statistical information and error reporting based on every command acquired.

This provides a global picture of the activity on the bus and - more importantly - analyzes every command to see that the protocol adheres to the JEDEC specification. Please see the NEX-DDR-PROTOCOL product page for more information.

 

SMI Configuration Support

Nexus Technology provides all the hardware and software necessary to configure and program the SMI-LAI channel registers and the SMI channel Global Event Bus.

SMI Configuration Connection

Connection to the SMI configuration SMBus, SMI Event Bus I/O, and SMI-LAI mode are provided through an Nexus Technology NEX-SMIAUX adapter. Each NEX-SMIAUX supports one or two SMI channels.

Up to eight NEX-SMIAUX adapters can be attached to a single Nexus Technology NEX-SMICOM which provides an interface for all eight adapters to a standard Microsoft Windows computer for easy SMI configuration. The NEX-SMICOM product comes with one NEX-SMIAUX adapter for connection to one or two SMI channels. NEX-SMIAUX are also available separately for configuration support for three or more SMI channels.

Non-Standard Connection

Some customers may not use the standard SMI cLGA configuration connection. For customers using the optional 3M 81026-600C07 SMI configuration connection, Nexus Technology provides the NEX-SMICLGA-CABLE adapter to interface to the NEX-SMIAUX.

SMI Cross Channel Triggering Support

Nexus Technology supports the SMI cross channel triggering feature via the NEX-SMICOM configuration software and an NEX-SMIEVT cable. This cable connects the Global Event Bus of two SMI channel pairs and enables the cross triggering functionality.

SMI Individual Product Configuration Table

The following nomenclatures represent all available products offered for SMI support.

Nomenclature Nexus Products Included Description
NEX-SMILAI-P 1- SMI Main and Secondary DIMM Adapter

1-TLA SMI Support Package (LA Setup Software)

 All the hardware and software necessary to interface one SMI channel to a Tektronix Logic Analyzer.
NEX-SMICOM-P
  • 1- SMI Configuration Switch
  • 1- SMI Configuration Setup Software
  • 1- NEX-SMIAUX
 All the hardware and software necessary to interface one SMI configuration bus (one SMI channel pair) to a Tektronix Logic Analyzer (via USB connection). The configuration switch and software support the configuration of up to 16 SMI channels. Please note that only one NEX-SMIAUX is included.
NEX-SMIAUX 1- SMI Configuration Adapter The hardware adapter required to interface the NEX-SMICOM configuration switch to one cLGA SMI configuration bus. One of these products are required per SMI channel pair. Please note that one NEX-SMIAUX is included with the NEX-SMICOM.
NEX-SMIEVT 1- SMI Event Bus Cable The cable required to interface the SMI Event Bus between two SMI channel pairs.
NEX-SMICLGA-CABLE 1- cLGA to 3M Adapter The hardware adapter required to interface a NEX-SMIAUX to a non-standard, 3M 81026-600C07 SMI configuration bus. One of these products are required per SMI channel pair.

 

SMI Package Product Configuration Table

The following package configurations provide all the hardware and software necessary to support the given number of SMI channels.

Nomenclature SMI Channels Supported Nexus Products Included Tektronix Requirements
NEX-SMILAI-1CH 1
  • 1- NEX-SMILAI-P
  • 1- NEX-SMICOM-P
  • 1 - 7000 Series TLA(4 Free Slots)
  • 2- TLA7BB4
  • 6 - P6960 Probes
  • 1- USB connection
NEX-SMILAI-2CH 2
  • 2- NEX-SMILAI-P
  • 1- NEX-SMICOM-P
  • 1 - 7000 Series TLA(8 Free Slots)
  • 4 - TLA7BB4
  • 12 - P6960 Probes
  • 1- USB connection
NEX-SMILAI-3CH 3
  • 3- NEX-SMILAI-P
  • 1- NEX-SMICOM-P
  • 1- NEX-SMIAUX
  • 1 - 7000 Series TLA(12 Free Slots)
  • 6 - TLA7BB4
  • 18 - P6960 Probes
  • 1- USB connection
NEX-SMILAI-4CH 4
  • 4- NEX-SMILAI-P
  • 1- NEX-SMICOM-P
  • 1- NEX-SMIAUX
  • 1 - 7000 Series TLA(16 Free Slots)
  • 8 - TLA7BB4
  • 24 - P6960 Probes
  • 1- USB connection

More Information

Training Material
Additional information is available. Please contact us.
Datasheet
Coming Soon.
Manual
Please contact us.
Keep-Out Specification
NEX-SMILAI Keep-Out Specification
SMI Control Flow Display
NEX-SMILAI disassembly screenshot showing  protocol decode and control flow.
SMI Software Display
NEX-SMILAI disassembly screenshot showing the software display.
SMI Hardware Display
NEX-SMILAI disassembly screenshot showing the hardware display.
Ordering Information
Please send quote requests to quotes@nexustechnology.com. Purchase orders can be faxed to 877-595-8118.