Intel CPUs
This section lists the specifications for Intel Pentium
CPUs. The following tables use some abbreviations as
f o llo ws :
Power
STD – 3.15V ~ 3.465V (Suggested setting 3.38V)
VR – 3.3V ~ 3.465V (Suggested setting 3.38V)
VRE – 3.45V ~ 3.6V (Suggested setting 3.52V)
Ti m i n g
STD – Standard Timing
MD – Min im um D e la y (Sh or te r m in im u m va lid
delay AC timing for some signals)
KIT – Supports timing for C55/C88 cache chipsets
Also, please note the following:
P54C
Beginning with the P54C E-Step, Standard timing
was replaced by existing Min Delay timing.
P54CS
P54CS PPGA UP:No DP, No APIC, No FRC
Beginning with the P54C E-Step, Standard timing
was replaced by existing Min Delay timing.
P55C
P55C A-Step is NOT a production stepping.
A-1 Step: Vcc and timing on initial samples is 2.9V
+/- 0.1V.
A-2 Step & B Step: Vcc and timing on production
stepping is 2.8V +/- 0.1V.
Summary of Contents for PR5
Page 10: ...System Block Diagram ...
