Supermicro XEON 2.8GHz P4X-0028-2M-800L User Manual

Product codes
P4X-0028-2M-800L
Page of 129
Intel® Xeon™ Processor with 512 KB L2 Cache
48
Datasheet
Figure 23. Low-to-High Front Side Bus Receiver Ringback Tolerance for PWRGOOD TAP 
Buffers
Figure 22. High-to-Low Front Side Bus Receiver Ringback Tolerance for AGTL+ and 
Asynchronous GTL+ Buffers
 
GTLREF 
CC
 
Noise Margin
+10% Vcc
 
SS
 
-10% Vcc
 
0.5 * Vcc
Vt+ (min)
Vt+ (max)
Vt- (max)
Vcc
Allowable Ringback
Vss
Threshold Region to switch
receiver to a logic 1.