DDR3-800 DIMM Slot Interposer
Flexible DDR3-800 Digital Validation
The DDR3-800 DIMM slot interposer allow for logic analyzer acquisition of command, address, read and write data of 240-pin, unbuffered or registered DDR3-800. The following DIMMs are supported: PC3-6400.
Interposer Design
Nexus Technology recommends DDR3 slot interposers for applications where the customer must have the greatest flexibility in the probing of different DDR3 DIMMs.
This interposer is an extender design and does not require a dedicated DIMM slot. The logic analyzer connects above the normal DIMM height so that there is no mechanical interference with adjacent DIMMs.
This is a passive interposer with no added buffers to conceal system performance.
Software
This DDR3-800 DIMM slot interposer comes with logic analyzer setup software, DDR3 protocol decode software, DDR3 data eye sample point analysis software, and protocol violation software.
+Logic Analyzer Setup Software
The logic analyzer setup software (Tektronix refers to these as 'Support Packages') provides a quick setup of the logic analyzer channels and logic analyzer clocking/acquisition parameters. This software also provides protocol decoding of the DDR3 transactions for easy display and logic analyzer triggering/filtering. These products also include Nexus Technology's Selective Clocking Feature - a transparent clocking option enabling filtering of DDR3 idle sequences to conserve logic analyzer memory.
+Data Sample Point Analysis Software
In order for the logic analyzer to capture data, the DDR3 signals must be digitized. For the command and address bus, this process is relatively straightforward as the center of the valid data eyes align with rising edge of the DDR clock. For the DDR3 data bus signals, the process of determining the optimal sample position for digitization is much more complicated. The valid eyes are purposely skewed - as per the DDR3 specification - on a byte basis relative to the DDR clock. The valid eyes also contain skew (again relative to the DDR clock) on a bit basis due to unavoidable artifacts of high-speed designs and the timing variations caused by the digitizing of the signals based on the threshold.
These, among other factors, make reliable and accurate DDR3 read and write data bus acquisition extremely difficult - if done manually. NEX-DDR3-SPA automates this process enabling quick and reliable DDR3 read and write data bus acquisition in only minutes. For more information, please see the NEX-DDR3-SPA product page.
+Protocol Violation Software
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 a Nexus Technology DDR3 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.
Digital Validation
Logic analyzer setup software (TLA support package) is included with these products. This setup software acquires/reconstructs the 400MHz command/address bus and acquires/reconstructs the 800MT/s read write data from the data bus. The software also decodes and displays the bus protocol, shows the valid read/write data and provides easy DDR protocol triggering to quickly capture relevant data.
These products also come with the NEX-DDR-PROTOCOL software tool. This software provides statistical information and global bus activity to quickly give the user an overview of the DDR3 bus activity without having to revert to a listing or waveform window. The software also performs basic protocol violation checking. Advanced protocol violation checking is available for purchase separately. Please see the NEX-DDR-PROTOCOL product page for more information on this powerful tool.
Product Configuration Table
| Nomenclature | Probes Included? | Nexus Hardware Included | Nexus Software Included |
|---|---|---|---|
| NEX-DDR3INTR | No-Note 1 | 1- DDR3-800 DIMM Slot Interposer |
|
| NEX-DDR3INTR-PR | Yes-Note 1 |
|
|
- Note 1
- Four Nexus Technology NEX-PRB1X probes and two Nexus Technology NEX-PRB4X probes are required and can be ordered as a complete package as shown in the table above.
Tektronix Hardware Requirements
| DDR Speed | Mainframe Required | Module(s) Required | Probes Required |
|---|---|---|---|
| DDR3-800 Read and Write Acquisition | TLA7000 Series | 3- TLA7Ax4 (450MHz state option, merged) |
|
More Information
- Datasheet
- Product datasheet in PDF format.
- Manual
- Please contact us.
- Mechanical
- Product mechanical outline or keep out volume specification.
- Ordering Information
- Please send quote requests to quotes@nexustechnology.com. Purchase orders can be faxed to 877-595-8118.
