This page provides useful information and resources to system designers in order to integrate Dido module in his/her application quickly. These information complement SoM-independent recommendations provided in the Carrier board design guidelines (SOM) page.
Several topics are covered, ranging from hardware issues to manufacturing aspects.
Topics shared with Naon SOM[edit | edit source]
Please refer to Integration_guide_(Naon) for all the topics that are in common with the Naon SOM
| Routed length for PCI Express Differential Pairs
|
Min
|
Typ
|
Max
|
| Differential Impedance [Ohm] |
- |
101 |
-
|
| Common Mode Impedance [Ohm] |
- |
57 |
-
|
| Intra pair matching [mils]* |
- |
- |
5
|
| Max Length [in] |
- |
- |
<5,5
|
| Stub |
- |
- |
0
|
| Vias on module TX |
- |
- |
3
|
| Vias on module RX |
- |
- |
6
|
- * See detailed trace lengths shown in the following table. These numbers are required to compute overall (SoM + carrier board) lengths.
| Dido pin name
|
Individual trace length [mils]
|
| PCIE_TXP |
5234,14
|
| PCIE_TXN |
5234,14
|
| PCIE_RXP |
5174,11
|
| PCIE_RXN |
5169,96
|
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