Mobile Intel Pentium 4 Processor with 533 MHz Front Side Bus

Mobile Intel
®
Pentium
®
4 Processor with 533 MHz System Bus Datasheet 75
Debug Tools Specifications
7 Debug Tools Specifications
Please refer to the ITP700 Debug Port Design Guide and the appropriate platform design
guidelines listed in Table 1 for more detailed information regarding debug tools specifications.
7.1 Logic Analyzer Interface (LAI)
Intel is working with two logic analyzer vendors to provide logic analyzer interfaces (LAIs) for use
in debugging mobile Intel Pentium 4 processor systems. Tektronix* and Agilent* should be
contacted to get specific information about their logic analyzer interfaces. The following
information is general in nature. Specific information must be obtained from the logic analyzer
vendor.
Due to the complexity of mobile Intel Pentium 4 processor systems, the LAI is critical in providing
the ability to probe and capture FSB signals. There are two sets of considerations to keep in mind
when designing a mobile Intel Pentium 4 processor system that can make use of an LAI:
mechanical and electrical.
7.1.1 Mechanical Considerations
The LAI is installed between the processor socket and the mobile Intel Pentium 4 processor. The
LAI pins plug into the socket, while the mobile Intel Pentium 4 processor pins plug into a socket on
the LAI. Cabling that is part of the LAI egresses the system to allow an electrical connection
between the mobile Intel Pentium 4 processor and a logic analyzer. The maximum volume
occupied by the LAI, known as the keepout volume, as well as the cable egress restrictions, should
be obtained from the logic analyzer vendor. System designers must make sure that the keepout
volume remains unobstructed inside the system. Note that it is possible that the keepout volume
reserved for the LAI may differ from the space normally occupied by the mobile Intel Pentium 4
processor with 533 MHz FSB heatsink. If this is the case, the logic analyzer vendor will provide a
cooling solution as part of the LAI.
7.1.2 Electrical Considerations
The LAI will also affect the electrical performance of the FSB; therefore, it is critical to obtain
electrical load models from each of the logic analyzer vendors to be able to run system level
simulations to prove that their tool will work in the system. Contact the logic analyzer vendor for
electrical specifications and load models for the LAI solution they provide.