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56 Intel® 41210 Serial to Parallel PCI Bridge Design Guide
41210 Bridge Customer Reference Boards
11.2 Material
The following materials are used with the 41210 Bridge CRB:
• FR-4, 0.062 in. +/- .007, 1.0 oz Copper Power/GND.
• Full length PCI Raw Card (3.3V Universal) 6.2” high x 7.00” long max with ½ inch cut away.
11.3 Impedance
Most signal layers require controlled Impedance of 60 Ω +/- 5% microstrip or stripline where
appropriate.
Differential signals for the PCI-E interface require matched 100
Ω differential termination realized
as matched 50
Ω resistances referenced to ground.
Table 18. CRB Board Stackup
Layer Type
Thickness
(mils)
Copper Weight
1 Signal 2.00 1/2 + plating
Prepreg 4.50
2 Plane: GND 1.20 1
Core 4.80
3 Signal 1.20 1
Prepreg 14.00
4 Plane: PWR 1.20 1
Core 3.8
5 Plane: PWR 1.20 1
Prepreg 14.00
6 Signal 1.20 1
Core 4.80
7 Plane: Power 1.20 1
Prepreg 4.50
8 Signal 2.00 1/2 + plating
Est. Total
Thickness
62 +/- 7