Datasheet
Intel
®
Itanium
®
Processor 9300 Series and 9500 Series Datasheet 33
Electrical Specifications
The transfer rates available for the processor are shown in Table 2-7. Transmitter and
receiver parameters for Intel
®
QPI slow mode, Intel
®
QPI and Intel
®
SMI are shown in
Table 2-8 and Table 2-9 respectively.
The applicability of this section applies to Intel
®
QPI for the Intel
®
Itanium
®
Processor
9500 Series. This section contains information for slow boot up speed (1/4 frequency of
the reference clock), 4.8 GT/s, and 6.4 GT/s.
Specifications for link speed independent specifications are called out in Table 2-8.
Electrical specifications for Transmit and Receive for 4.8 GT/s are captured in Table 2-9
and for 6.4 GT/s are captured in Table 2-10.
Table 2-7. Intel
®
Itanium
®
Processor 9500 Series Clock Frequency Table
Intel
®
QuickPath Interconnect
Forwarded Clock Frequency
Intel
®
QuickPath Interconnect Data
Transfer Rate
33.33 MHz 66.66 MT/s (see note 1)
2.40 GHz 4.8 GT/s
3.2 GHz 6.4 GT/s
Notes:
1. This speed is the 1/4 SysClk Frequency.
Table 2-8. Intel
®
Itanium
®
Processor 9500 Series Link Speed Independent Specifications
(Sheet 1 of 2)
Symbol Parameter Min Nom Max Unit Notes
UIavg Average UI size at “G”
GT/s (Where G = 4.8,
6.4, and so on)
0.999 *
nominal
1000/G 1.001 *
nominal
psec
T
slew-rise-fall-pin
Defined as the slope of
the rising or falling
waveform as measured
between ±100mV of the
differential transmitter
output, for any data or
clock
920V/nsec
ΔZ
TX_LOW_CM_DC
Defined as:
(max(Z
TX_LOW_CM_DC
) -
min(Z
TX_LOW_CM_DC
))
/
Z
TX_LOW_CM_DC
expressed
in %, over full range of Tx
single ended voltage
-6 6 % of
Z
TX_LOW_CM_DC
ΔZ
RX_LOW_CM_DC
Defined as:
(max(Z
TX_LOW_CM_DC
) -
min(Z
TX_LOW_CM_DC
))
/
Z
TX_LOW_CM_DC
expressed
in %, over full range of Tx
single ended voltage
-6 0 6 % of
Z
TX_LOW_CM_DC
N
MIN-UI-Validation
# of UI over which the
eye mask voltage and
timing spec needs to be
validated
1,000,000
Z
TX_HIGH_CM_DC
Single ended DC
impedance to GND for
either D+ or D- of any
data bit at Tx
4k
Ω
Z
RX_HIGH_CM_DC
Single ended DC
impedance to GND for
either D+ or D- of any
data bit at Rx
4k
Ω
1