14579-030 (PXIe System)
R1.5, April 2021
8 Slot PXIe Backplane (23007-508)
11
3.5 Schroff PXIe Chassis Management Module (CMM)
The Schroff PXIe Chassis Management Module (CMM) allows access from the operating
system to all important chassis functions. The CMM provides an I2C interface which is
connected to backplane SMB (system slot pins XP3-a3, -b3).
The CMM:
• Monitors all chassis voltage levels
• Monitors and control the power supply
• Monitors and control the fans
• Monitors the chassis temperatures (inlet and outlet)
• Controls SYNC100 frequency from clock module
• Controls the chassis status LEDs
I2C interface
(to SMB on backplane
pins XP3 -a3, -b3)
Backplane voltages
(5 V aux, 5 V, 3,3 V, +12 V,-12 V)
Temperature Sensors (4x)
Select “PS_ON” source
“PS_ON” from system slot source
“PS_ON” external source
4x “PS_ON” output
(for different PSU modules)
FAN PWM (fan speed control)
6x FAN Tacho
“AC_OK” from PSU
Chassis status LEDs
I2C
Trigger Bridge1
Clock Module
CMM module
μC
Default I2C
address 0x58h
Trigger Bridge2
Trigger Bridge3
Trigger Bridge4
To use the CMM‘s full capabilities, you have to access the CMM‘s I²C register with the
Schroff Embedded Controller or another appropriately configured and programmed
system controller.
For further information see CMM User Guide, Ord--No: 63972-391
Summary of Contents for Schroff 14579-030
Page 1: ...8 Slot PXIe System User s Manual Product Number 14579 030 Doc No 63972 388_R1 5 April 2021...
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Page 30: ...14579 030 PXIe System 26 3Dimensions R1 5 April 2021...
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