82870P2P64H2 Datasheet, PDF (184/217 Pages) –

Electrical Characteristics
R
5.1.6.1 Hub Interface 2.0 DC Characteristics
Hub Interface 2.0 is optimized to operate with a nominal VCC of between 1.00 V and 1.80 V
based on a constant amplitude signaling voltage of 0.8 V, referenced to VSS. The parameters in
Table 69 are the requirements for the common clock and source synchronous modes of the hub
interface.
Table 69. DC Characteristics for Hub Interface Common Clock Signaling
Symbol
Parameter
Min
Max
Units
Condition
Notes
VCC
VIH
VIL
IIL
VOH
VOL
Cin
CCLK
I/O Supply Voltage
Input High Voltage
Input Low Voltage
Input Leakage
Current
Output High Voltage
1.71
HI_VREF
+ 0.1
150
0.60
1.89
HI_VREF
– 0.1
750
1.2
Output Low Voltage
-0.3
0.05
Input Pin
5
Capacitance
CLK Pin
Capacitance
5
8
V
1
V
V
uA
0<VIN<VIH(max)
V
Iout = -0.6/ HI_RCOMP mA 2
48 Ω ≤ HI_RCOMP ≤ 62 Ω
V
Iout = 1.0 mA
2
pF
3
pF
3
NOTES:
1. VCC only specifies the voltage at the hub interface; component supply voltages are independent of
VCC. Component I/O buffers must be powered only from VCC. VCC for both hub interface compliant
master and hub interface compliant target must be driven from the same power rail.
2. The minimum VOL and maximum VOH values are not acceptable nominal DC operating points. They
represent the absolute maximum allowed voltage allowed on the pin (i.e., VOH due to incomplete
impedance updates on the drivers and terminator).
3. Absolute maximum pin capacitance for hub interface input is 8 pF (except for CLK66).
184
Intel^® 82870P2 P64H2 Datasheet