Changes between Version 9 and Version 10 of Hardware/jCM/cCM2/aHardware/RiserCard
- Jan 11, 2013, 1:28:13 AM (8 years ago)
v9 v10 1 === Custom Riser Card for MB770 Platform=== 1 ====== 2 2 3 3 MB770 motherboard is only PCI 2.1 compliant and therefore doesn't provide 3.3VSB (3.3 V stand-by voltage) on pin A14 of the PCI bus connector. This voltage is is supplied to the core of CM2 and is used to turn the main power on/off. Furthermore, even the wake-on LAN (WOL) connector on the motherboard doesn't provide stand-by voltage (and on most motherboards the WOL connector is not even installed). … … 7 7 One solution to this problem was to create a custom riser card shown in figure 1 which has a separate feed for stand-by voltage directly from the power supply, voltage regulator for 5 to 3.3 V conversion and feeds 3.3V to the CM2 card on PCI connector A14. 8 8 9 ==== Standby voltage feed==== 9 ======== 10 10 11 11 [[Image(Clip.jpg, 160px, left)]] CM2 stand-by voltage is provided with the separate wire that is attached directly to the +5VSB wire of the ATX power supply with the self-tapping connector (MOLEX [http://delta.octopart.com/Molex__19216-0005.pdf Multi-Lock Insulation Displacement Connector (IDC)] ) show on figure 2. … … 44 44 45 45 46 ==== Installation==== 46 ======== 47 47 48 48 The assembled node with custom raiser and CM2 card is shown in Figure 3. The +5VSB clamp and feeder wire are pulled out of the box just to emphasize the setup.