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Chapter 8 Electrical Data 31
25175H—March 2003 AMD Athlon™ XP Processor Model 8 Data Sheet
Preliminary Information
8 Electrical Data
This chapter describes the electrical characteristics that apply
to all desktop AMD Athlon™ XP processors model 8.
8.1 Conventions
The conventions used in this chapter are as follows:
■ Current specified as being sourced by the processor is
negative.
■ Current specified as being sunk by the processor is positive.
8.2 Interface Signal Groupings
The electrical data in this chapter is presented separately for
each signal group.
Table 8 defines each group and the signals contained in each
group.
Table 8. Interface Signal Groupings
Signal Group Signals Notes
AMD Athlon™
System Bus
SADDIN[14:2]#, SADDOUT[14:2]#, SADDINCLK#, SADDOUTCLK#,
SFILLVAL#, SDATAINVAL#, SDATAOUTVAL#, SDATA[63:0]#,
SDATAINCLK[3:0]#, SDATAOUTCLK[3:0]#, CLKFWDRST, PROCRDY,
CONNECT
See “Advanced 266 FSB
AMD Athlon™ System Bus AC
Characteristics” on page 25,
“Advanced 333 FSB AMD Athlon™
System Bus AC Characteristics” on
page 29, “AMD Athlon™ System
Bus DC Characteristics” on page 36,
and “CLKFWDRST Pin” on page 73.
APIC PICD[1:0]#, PICCLK
See “APIC Pins AC and DC
Characteristics” on page 44, and
“APIC Pins, PICCLK, PICD[1:0]#” on
page 73.
Frequency FID[3:0], FSB_Sense[1:0]
See “Frequency Identification
(FID[3:0])” on page 33, “FID[3:0]
Pins” on page 75, and
“FSB_Sense[1:0] Pins” on page 76.
JTAG TMS, TCK, TRST#, TDI, TDO
See “General AC and DC
Characteristics” on page 39.