Intel 41210 - Manual (Page 21)

Intel® 41210 Serial to Parallel PCI Bridge Design Guide 21
Power Plane Layout
Table 2. 41210 Bridge Decoupling Guidelines
4.2 Split Voltage Planes
There are two 1.5V voltage planes that supply power to the 41210 Bridge:
• VCC15:1.5V ±5% (1.5V core voltage)
• VCCPE:1.5V ±3% (1.5V PCI Express voltage)
The 41210 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 10 .
Voltage Plane Voltage
41210
Pins
C
(uF)
Package
ESR
(m
Ω
)
ESL
(nH) # of
Caps
Location
PCI/PCI-X
Voltage
3.3V VCC33 0.1 0603
50-
300
1.0-
3.0
5
Beneath 41210
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
41210 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
41210 Bridge BGA
Core Voltage 1.5V VCC15 0.1 0603 200 2.0 5
Beneath 41210
Bridge BGA
Core Voltage 1.5V VCC15 1.0 0805 200 2.3 5
As close as design
rules will allow to
41210 Bridge BGA
Core Voltage 1.5V VCC15 10 1206 200 1.9 2
As close as design
rules will allow to
41210 Bridge BGA
PCI Express
Voltage
1.5V VCCPE 0.1 0603 200 2.0 3
Beneath 41210
Bridge BGA
PCI Express
Voltage
1.5V VCCPE 1 0805 200 2.3 4
As close as design
rules will allow to
41210 Bridge BGA
PCI Express
Voltage
1.5V VCCPE 10 1206 200 1.9 2
As close as design
rules will allow to
41210 Bridge BGA