NEX-DDRII400DC

DDRII Interposer & Software

New! DDRII Protocol Violation software available with this product.

The NEX-DDRII400DC allows for acquisition of Address/Command, Read and Write Data of 240-pin, Unbuffered or Registered DDRII 400 (or less) DIMMs. Supports PC2-3200 (DDR2-400).

The NEX-DDRII400DC adapter is an impedance controlled, matched trace-length interposer design and does not require a dedicated slot. The logic analyzer connects above the normal DIMM height so that there is no interference with adjacent DIMMs.

DC Form Factor

Using built-in logic analyzer probes, this product satisfies the need for a form factor that greatly reduces the keep-out volume (especially the height of the adapter). This also reduces the overall tool cost to the customer and provides a higher signal to noise ratio for added signal margins and high quality acquisitions.

This product satisfies the need for a form factor that requires a very thin keep-out, with a very low height. This form factor, coupled with low signal distortion, has produced a superior product to meet customer demands.

Product Highlights

Straddle mount DDRII connector.

DC Form Factor provides a very thin and short passive interposer.

Acquisition of DDRII Address/Command, Read and Write data.

No added buffers to conceal system performance.

Impedance controlled / matched trace-length design.

8 GHz Timing analysis available on all DDRII signals.

Correlation with data from other acquisition modules.

Oscilloscope Connectivity to any channel without having to re-probe via the TLA’s Enhanced iView Analog Mux capability.

Selective Clocking stores data when Commands are present and for thirteen clock cycles after Column Address assertion, resulting in more DDRII Bus Cycle activity and fewer Idle cycles stored in acquisition memory.

Simultaneous state and timing on every channel of the TLA.

Pre-defined Symbols for easy Trigger Setup for the following Command Cycles: Read Col Address Read, Write Col Address Write, Mode Register Set, Row Address Strobe, No Operation, Ignore Command Data, Burst Stop, Refresh, Precharge, and Precharge Select Bank.

System Requirements

DDRII 400MT/s Read and Write Acquisition Requires
- TLA Application Software V4.2 or later
  - Two, merged, 450MHz state speed acquisition modules (TLA7AA4 or TLA7AB4)

Alternate configurations supported by this product can be found in the manual.

More detailed information can be found in the manual.