Intel LF80550KF0604M Data Sheet

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Dual-Core Intel® Xeon® Processor 7100 Series Datasheet
127
Debug Tools Specifications
9
Debug Tools Specifications
Please refer to the eXtended Debug Port: Debug Port Design Guide for MP Platforms, 
and the appropriate platform design guide for more detailed information regarding 
debug tools specifications.
9.1
Logic Analyzer Interface (LAI)
Intel is working with two logic analyzer vendors to provide logic analyzer interfaces 
(LAIs) for use in debugging Dual-Core Intel® Xeon® Processor 7100 Series 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 Dual-Core Intel® Xeon® Processor 7100 Series processor-
based multiprocessor systems, the LAI is critical in providing the ability to probe and 
capture front side bus signals. There are two sets of considerations to keep in mind 
when designing a Dual-Core Intel® Xeon® Processor 7100 Series processor-based 
system that can make use of an LAI: mechanical and electrical.
9.1.1
Mechanical Considerations
The LAI is installed between the processor socket and the processor. The LAI pins plug 
into the socket, while the 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 
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 Dual-
Core Intel® Xeon® Processor 7100 Series processor heatsink. If this is the case, the 
logic analyzer vendor will provide a cooling solution as part of the LAI.
9.1.2
Electrical Considerations
The LAI will also affect the electrical performance of the front side bus; 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.
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