Datasheet

Electrical Specifications
34 Intel
®
Itanium
®
Processor 9300 Series and 9500 Series Datasheet
Z
TX_LINK_DETECT
Link Detection Resistor 500 2000
Ω
V
TX_LINK_DETECT
Link Detection Resistor
Pull-up Voltage
max VCCIO V
T
DATA_TERM_SKEW
Skew between first to last
data termination meeting
Z
RX_LOW_CM_DC
128 UI
T
INBAND_RESET_
SENSE
Time taken by inband
reset detector to sense
Inband Reset
1.5 μs
Tclk
_DET
Time taken by clock
detector to observe clock
stability
20K UI
T
CLK_FREQ_DET
Time taken by clock
frequency detector to
decide slow vs.
operational clock after
stable clock
32 Reference
Clock Cycles
T
Refclk-Tx-Variability
Phase variability between
reference Clk (at Tx
input) and Tx output.
500 psec
T
Refclk-Rx-Variability
Phase variability between
reference Clk (at Rx
input) and Rx output.
1000 psec
L
D+/D-RX-Skew
Phase skew between D+
and D- lines for any data
bit at Rx
0.03 UI
BER
Lane
Bit Error Rate per lane
valid for 4.8 and 6.4 GT/s
1.0E-14 Events
Notes:
1. Used during initialization. It is the state of “OFF” condition for the receiver when only the minimum termination
is connected.
Table 2-9. Intel
®
Itanium
®
Processor 9500 Series Transmitter and Receiver Parameter
Values for Intel
®
QPI Channel at 4.8 GT/s (Sheet 1 of 2)
Symbol Parameter Min Nom Max Unit Notes
V
Tx-diff-pp-pin
Transmitter differential swing 900 1400 mV 1
Z
TX_LOW_CM_DC
DC resistance of Tx terminations
at half the single ended swing
(which is usually 0.25*V
Tx-diff-pp-
pin
) bias point
37.4 50 Ω
Z
RX_LOW_CM_DC
DC resistance of Rx terminations
at half the single ended swing
(which is usually 0.25*V
Tx-diff-pp-
pin
) bias point
37.4 50 Ω
V
Tx-cm-dc-pin
Transmitter output DC common
mode, defined as average of V
D+
and V
D-
0.23 0.27 Fraction of
V
Tx-diff-pp-pin
V
Tx-cm-ac-pin
Transmitter output AC common
mode, defined as ((V
D+
+ V
D-
)/2 -
V
Tx-cm-dc-pin
)
-0.0375 0.0375 Fraction of
V
Tx-diff-pp-pin
2
TX
duty-pin
Average of UI-UI jitter -0.055 0.055 UI
TX
jitUI-UI-1E-7-pin
UI-UI jitter measured at Tx output
pins with 1E-7 probability
-0.075 0.075 UI
TX
jitUI-UI-1E-9-pin
UI-UI jitter measured at Tx output
pins with 1E-9 probability.
-0.085 0.085 UI
Table 2-8. Intel
®
Itanium
®
Processor 9500 Series Link Speed Independent Specifications
(Sheet 2 of 2)
Symbol Parameter Min Nom Max Unit Notes