Reference Clocking Specifications; Intel® Itanium® Processor 9300 Series - Intel BX80569Q9550 - Core 2 Quad 2.83 GHz Processor Datasheet

Table 2-2. Signal Groups (Sheet 3 of 3)
Signal Group
Debug
Single-ended
Power Supplies
V
CC33_SM
PIROM
Notes:
1. CMOS signals have a reference voltage (Vref) equal to VCCIO/2.
2. GTL signals have a reference voltage (Vref) equal to VCCIO*(2/3).
3. All single-ended buffer types, including inputs, outputs and input/outputs, include an on-die pull up resistor
between 4 kOhms and 8.7 kOhms. Recommended values for external pull-downs on the inputs and input/
output signals must meet the V
2.3

Reference Clocking Specifications

The processor has one input reference clock, SYSCLK/SYSCLK_N for the Intel
interface. The processor timing specified in this section is defined at the processor pins
unless otherwise noted.
®
Table 2-3. Intel QuickPath Interconnect/Intel
Reference Clock Specifications (Sheet 1 of 2)
Symbol
fsysclk (ssc-off) System clock frequency
Fsyclk (scc-on) System clock frequency
ER Differential Rising and Falling Edge
sysclk-diff-Rise,
Rates
ER
sysclk-diff-Fall
T Duty cycle of Reference clock
sysclk_dutycycle
C Clock Input Capacitance
i-CK
VH Differential High Input Voltage
VL Differential Low Input Voltage
V Absolute crossing point
Cross
V Peak-peak variation
Cross_delta
V Differential Ringback voltage
RB-Diff
threshold
26
Buffer Type
GTL I/O
GTL Input
GTL Output
Core
Uncore
Cache (Intel ® Itanium
Processor 9300 Series)
Analog
I/O
Stand-by
Pins
Input
I/O
Input
Input
Input
specification for that buffer.
il
Parameter
XDPOCPD_N[7:0],TRIGGER_N[1:0]
XDPOCPFRAME_N
XDPOCP_STRB_IN_N, PRBMODE_REQST_N
XDPOCP_STRB_OUT_N, PRBMODE_RDY_N
4
V
CCCORE
4
V
CCUNCORE
® V 4
CCCACHE
V
CCA
V
CCIO
V
CC33_SM
PIR_SCL
PIR_SDA
PIR_A0
PIR_A1
SM_WP
®
Scalable Memory Interconnect
Min Nom
133.31 133.33
132.62 132.99
1.0
40
0.5
0.15
0.25 0.35
-100
® ®
Intel Itanium Processor 9300 Series and 9500 Series Datasheet
Electrical Specifications
Signals 1, 2, 3
®
Max Units Notes
133.34 MHz
133.37 MHz
4.0 V/ns
60 % period
2.0 pf
V
-0.15 V
0.55 V 1, 5, 6
140 mv 1, 5, 7
100 mV
QPI
3,4
3
3
3
3, 10