Intel E3300 AT80571RG0601ML Data Sheet

Product codes
AT80571RG0601ML
Page of 100
Datasheet
27
Electrical Specifications
NOTES:
1.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2.
GTLREF is to be generated from V
TT
 by a voltage divider of 1% resistors. If an Adjustable 
GTLREF circuit is used on the board (for Quad-Core processors compatibility) the two 
GTLREF lands connected to the Adjustable GTLREF circuit require the following: 
GTLREF_PU = 50 Ω, GTLREF_PD = 100 Ω. 
3.
R
TT
 is the on-die termination resistance measured at V
TT
/3 of the GTL+ output driver. 
4.
COMP resistance must be provided on the system board with 1% resistors. COMP[3:0] and 
COMP8 resistors are to V
SS
.
2.8
Clock Specifications
2.8.1
Front Side Bus Clock (BCLK[1:0]) and Processor Clocking
BCLK[1:0] directly controls the FSB interface speed as well as the core frequency of the 
processor. As in previous generation processors, the processor’s core frequency is a 
multiple of the BCLK[1:0] frequency. The processor bus ratio multiplier will be set at its 
default ratio during manufacturing. The processor supports Half Ratios between 7.5 
and 13.5, refer to 
 for the processor supported ratios.
The processor uses a differential clocking implementation. For more information on the 
processor clocking, contact your Intel field representative.
Table 14.
GTL+ Bus Voltage Definitions
Symbol
Parameter
Min
Typ
Max
Units
Notes
1
GTLREF_PU
GTLREF_PD
GTLREF pull up on Intel
®
 
3 Series Chipset family 
boards
57.6 * 0.99
57.6
57.6 * 1.01
Ω
2
GTLREF pull down on 
Intel
®
 3 Series Chipset 
family boards
100 * 0.99
100
100 * 1.01
Ω
2
R
TT
Termination Resistance
45
50
55
Ω
3
COMP[3:0]
COMP Resistance
49.40
49.90
50.40
Ω
4
COMP8
COMP Resistance
24.65
24.90
25.15
Ω
4