Intel Itanium Processor 9300 Series and 9500 Series

Electrical Specifications
Figure 2-4.
Differential Edge Rate Definition
ER Refclk-diff-Rise
ER Refclk-diff-Fall
V Refclk-diff-ih = 150 mV
0.0 V
V Refclk-diff-il = –150 mV
REFCLK diff
Figure 2-5.
V RB and T Stable Definitions
TStable
VRefclk-diff-ih = 150 mV
VRB- diff max 100 mV
0.0 V
V RB-diff min = –100 mV
VRefclk-diff-ih = – 150 mV
REFCLK
diff
T Stable
2.4 Intel ® QuickPath Interconnect and Intel ® SMI
Signaling Specifications
.
2.4.1 Intel ® Itanium ® Processor 9300 Series Intel ® QuickPath
Interconnect and Intel ® SMI Specifications for 4.8 GT/s
The applicability of this section applies to Intel ® QPI for the Intel ® Itanium ® Processor
9300 Series. This section contains information for Intel ® QPI slow boot up speed
(1/4 frequency of the reference clock) and processor’s normal operating frequency, 4.8
GT/s, for Intel ® QPI and Intel ® SMI.
For Intel ® QPI slow boot up speed, the signaling rate is defined as 1/4 the rate of the
system reference clock. For example, a 133 MHz system reference clock would have a
forwarded clock frequency of 33.33 MHz and the signaling rate would be 66.67 MT/s.
The transfer rates available for the processor are shown in Table 2-4. Transmitter and
receiver parameters for Intel ® QPI slow mode, Intel ® QPI and Intel ® SMI are shown in
Table 2-5 and Table 2-6 respectively.
28 Intel ® Itanium ® Processor 9300 Series and 9500 Series Datasheet