Intel III Xeon 800 MHz 80526KZ800256 User Manual
Product codes
80526KZ800256
APPENDIX
99
10.1.47 SELFSB0 (I) SELFSB1 (O)
The Pentium® III Xeon™ processor at 700 MHz and 900 MHz adds a definition to the SELFSB [1:0] pins which is
compatible with legacy systems as well as new platforms. The added functionality provides the means for the clock
synthesizer and additional baseboard logic to auto detect the expected system bus frequency required by a specific
cartridge. Table 59 and Figure 43 provide a summary of the functionality and the resistor values for an frequency auto
detect circuit.
compatible with legacy systems as well as new platforms. The added functionality provides the means for the clock
synthesizer and additional baseboard logic to auto detect the expected system bus frequency required by a specific
cartridge. Table 59 and Figure 43 provide a summary of the functionality and the resistor values for an frequency auto
detect circuit.