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 Figure9.

Voltage Plane Voltage 41110
Bridge
Pins
C
(uF) Package ESR
(mΩ)ESL
(nH) # of
Caps Location
PCI/PCI-X
Volta ge 3.3V VCC33 0.1 0603 50-
300 1.0-
3.0 5Beneath 41110
Bridge BGA
PCI/PCI-X
Volta ge 3.3V VCC33 1.0 0603 50-
300 1.0-
3.0 2As close as design
rules will allow to
41110 Bridge BGA
PCI/PCI-X
Volta ge 3.3V VCC33 10 1206 50-
300 1.0-
3.0 3As 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
Volta ge 1.5V VCCPE 0.1 0603 200 2.0 3 Beneath41110
Bridge BGA
PCI Express
Volta ge 1.5V VCCPE 1 0805 200 2.3 4 As close as design
rules will allow to
41110 Bridge BGA
PCI Express
Volta ge 1.5V VCCPE 10 1206 200 1.9 2 As close as design
rules will allow to
41110 Bridge BGA