Backplane
Table 5. | Chassis Elements Directly Driven by CMM Hardware | ||
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| Chassis | Component | Notes |
| Element | ||
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| EEPROM + others | 50 mA @ 5 V max; typically uses series resistance to drop |
| CDM | voltage to 3.3.V. | |
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| LED | Tricolor LEDs driven by CMM |
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| Filter Tray | 2 Thermistors | NTC sensors, such as US Sensor USX2257 |
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| LED | Red plus green LEDs driven by CMM | |
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| Power switch | Dual pole switch | Soft power switch to CMMs |
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| LAN ports | 2 LEDs each (4 total) | Speed on one LED, Link and Activity on the other |
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6.2.5Ethernet Routing
Each CMM provides two Ethernet channels that can be routed to the base interface of PICMG* 3.0 hub slots. The PICMG 3.0 specification only allocates space for one ShMC slot, but the backplane can typically be set up to “poach” an unused slot in order to provide a connectivity option.
A
Figure 13. Ethernet Port Poaching
CMM 1
LAN A 
LAN B
Ethernet
Fabric A
Port 0
Port 1
...
Port 14
Port 15
CMM 2
LAN A 
LAN B
Ethernet
Fabric B
Port 0
Port 1
...
Port 14
Port 15
| Intel NetStructure® MPCMM0002 Chassis Management Module |
July 2007 | Hardware TPS |
Order Number: | 31 |