Signal Description
2.8
Power and Ground
Table 2-10. Voltage Pins
Signal
Description
RCOMP
VCC
PCI RCOMP: Analog compensation pin for PCI (0.75V nominal).
1.5V Core Voltage: This is the voltage for the core, 1.5V.
Analog PCI Express* Voltage: 1.5V
VCCAEXP
VCCAPCI[2:0]
VCCBGEXP
VCCEXP
VCC15
Analog PCI Voltages: 1.5V.
Analog Bandgap Voltage: 2.5V
1.5V PCI Express* Voltage: 1.5V.
1.5V I/O Voltage: 1.5V.
VCC33
3.3V PCI/PCI-X I/O Voltage: This is the voltage for PCI I/O, 3.3V.
Analog Reference Voltage to PCI: Input signal (0.75V nominal).
Ground: Ground for all voltage rails.
VREFPCI
VSS
VSSAEXP
VSSBGEXP
Analog PCI Express* Ground.
Analog Bandgap Ground.
2.9
Pin Straps
The following signals are used for static configuration. These signals are all sampled on the rising
edge of PWROK, and then return to normal usage afterward.
Table 2-11. Normal Functional Pin Straps (Sheet 1 of 3)
Strap Pin
Function
HPA_SIC
HPB_SIC
Intel Test Mode:
1 = Normal operation
0 = Reserved
HPA_SID
HPB_SID
Intel Test Mode:
1 = Reserved
0 = Normal operation
HPA_SLOT[3]
HPB_SLOT[3]
Enable/Disable PCI Hot Plug Mode:
1 = Hot Plug Mode Enabled
0 = Hot Plug Mode Disabled
Intel® 6700PXH 64-bit PCI Hub Datasheet
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INTEL [ INTEL ]
