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Intel® 41110 Serial to Parallel PCI Bridge Design Guide 19
Power Plane Layout
Table 2. 41110 Decoupling Guidelines
4.2 Split Voltage Planes
There are two 1.5V voltage planes that supply power to the 41110:
• VCC15:1.5V ±5% (1.5V core voltage)
• VCCPE:1.5V ±3% (1.5V PCI Express voltage)
The 41110 Bridge core (VCC15), PCI-Express (VCCPE) voltages should be supplied by two
separate voltage regulators or a single regulator. If VCC15 and VCCPE is supplied by a single
voltage regulator the power planes should be split as shown in Figure 9.
Voltage Plane Voltage
41110
Bridge
Pins
C
(uF)
Package
ESR
(mΩ)
ESL
(nH)
# of
Caps
Location
PCI/PCI-X
Voltage
3.3V VCC33 0.1 0603
50-
300
1.0-
3.0
5
Beneath 41110
Bridge BGA
PCI/PCI-X
Voltage
3.3V VCC33 1.0 0603
50-
300
1.0-
3.0
2
As close as design
rules will allow to
41110 Bridge BGA
PCI/PCI-X
Voltage
3.3V VCC33 10 1206
50-
300
1.0-
3.0
3
As close as design
rules will allow to
41110 Bridge BGA
Core Voltage 1.5V VCC15 0.1 0603 200 2.0 5
Beneath 41110
Bridge BGA
Core Voltage 1.5V VCC15 1.0 0805 200 2.3 5
As close as design
rules will allow to
41110 BridgeBGA
Core Voltage 1.5V VCC15 10 1206 200 1.9 2
As close as design
rules will allow to
41110 Bridge BGA
PCI Express
Voltage
1.5V VCCPE 0.1 0603 200 2.0 3
Beneath41110
Bridge BGA
PCI Express
Voltage
1.5V VCCPE 1 0805 200 2.3 4
As close as design
rules will allow to
41110 Bridge BGA
PCI Express
Voltage
1.5V VCCPE 10 1206 200 1.9 2
As close as design
rules will allow to
41110 Bridge BGA