Advantech MicroTCA UTCA-5503, User Manual

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11 UTCA-5503 User Manual
Chapter 2
A
pplications
and
Overview
PCB2 carries the system clock logic and may also contain switching logic for fabric B
which is normally used for SATA/SAS functionality on AMC modules. SATA is nor-
mally used for direct connection of a processor AMC and a SATA drive. Therefore,
PCB2 with SAS/SATA functionality may just be implemented on custom request.
PCB3 contains switching logic for the fat pipes region as does PCB4. Because of
component height limitation on PCB4 this PCB is just implemented as a bare back-
plane connection and will not carry active components.
2.2 System Management
UTCA-5503 implements both the Carrier Manager and Shelf Manager of a uTCA sys-
tem. It may or may not be connected to an external System Manager as shown
below.
The MCH connects to the AMC slots of an uTCA system with a radial IPMB accord-
ing to IPMI and ATCA/AMC specifications. It senses the “presence detect” signals of
each AMC slot (PS1#) and controls payload power for each slot by the ENABLE# sig-
nal. A redundant I2C bus is used for managing centralized system resources like the
cooling units, power modules and carrier FRU devices. Connection to the outside
world is implemented by either a dedicated front panel 10/100BT Ethernet interface
or optional connection to the base fabric switch, in which mode the front panel inter-
face will become a 10/100/1000BT fabric LAN connection. The system management
functions are implemented on a micro controller system referred to as the “MCMC”.
Figure 2.3 uTCA System Management Architecture