HP E2468A IBM PowerPC 403GA Preprocessor Interface

Product Summary

The Hewlett-Packard E2468A preprocessor interface provides an easy way to connect a Hewlett-Packard logic analyzer to a target system using the IBM PowerPC 403GA microprocessor. All necessary clocks are passed through by the preprocessor to the logic analyzer, ensuring t hat data is captured at the correct time. Software is shipped with the product that automatically configures the logic analyzer, generating labels for address, data, and status signals. Included with the software is a disassembler which displays execution traces in PowerPC 403GA microprocessor mnemonics. Instructions which are pre-fetched but not executed are marked in the trace display. Three modes of operation are available to the user: state-per-clock, which provides a complete display of all bus activity; state-per-transfer, which filters out wait and idle states; and timing analysis up to 500 MHz. Channel to channel skew is 1 ns.

Product Features

• Inverse Assembler Features
  All processor instructions are supported. In addition, disassembly is synchronized at branch addresses
• State Per Transfer Mode
  In this mode, the logic analyzer records only those states in which the strobe (IOTV, TS6) is asserted. This mode filters wait and idle states.
• State Per Clock Mode
  When using this mode, address and data are captured on each CPU clock; this feature is useful in hardware validation and debugging of system crashes.
• Timing Mode
  All address, data and status line are labeled on the logic analyzer display when making accurate timing measurements.
• Target Signal Timing
  Data must be valid for a 3.5 ns window with respect to the logic analyzer clock, which strobes the data into the logic analyzer on the rising edge.

Product Specifications

Microprocessor Compatibility
50 MHz 160-pin PQFP IBM PowerPC 403GA

Logic Analyzers Supported
HP 16550A (1 required)
HP 16554A, 1655A, 16556A (2 required)
HP 1660A, 1661A

Probes Required
Five, 16-channel probes are required for complete state disassembly.  
Three additional probes will monitor the remainder of the signal pins
for timing measurements.

Adapters
No additional termination adapters are required.

Signal Line Loading
10pF and 100kohms on all signals.

Product Ordering Information

HP E2468A	IBM PowerPC 403GA Preprocessor Interface

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