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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

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 62 63 64

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Intel 41210 Manuale Utente Pagina 56