Integration guide (Dido)
Info Box
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Contents
Introduction[edit | edit source]
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.
[edit | edit source]
Please refer to Integration_guide_(Naon) for all the topics that are in common with the Naon SOM
Dido SOM specific topics[edit | edit source]
PCI Express[edit | edit source]
PCB[edit | edit source]
| 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 |
