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AM5901
1.
Introduction
1.1
Board Overview
The AM5901 is a MicroTCA™ Carrier Hub (MCH) implemented in the form factor of a Double,
Full-size Advanced Mezzanine Card (AMC) Module with a single tongue. It combines the
control and management infrastructure and the interconnect fabric resources needed to sup-
port up to twelve AMC modules, up to two cooling units and up to four power modules in a
MicroTCA™ system. The MCH's design is based on the NXP® LPC2368 microcontroller and
the Broadcom BCM5396 Gigabit Ethernet switch.
The NXP® LPC2368 microcontroller includes a 70 MHz ARM7 CPU with I²C busses for IPMB
usage and an Ethernet interface. On the AM5901, this microcontroller serves as the MicroT-
CA™ Carrier Management Controller (MCMC) with support for E-Keying, power units, cooling
units, AMC modules, sensor data records, FRU management, Ethernet interface to external
shelf manager and basic shelf management functions.
The Broadcom BCM5396 Gigabit Ethernet switch uses 16 SerDes/SGMII ports and combines
all functions of a high-speed base fabric including packet buffer, Media Access Controllers, ad-
dress management and a non-blocking switch controller.
The AM5901 itself is hot swappable and uses E-Keying to provide hot swap capability for the
FRUs installed in a MicroTCA™ system, such as AMCs, cooling units and power modules, thus
enabling them to be replaced, monitored and controlled without having to shut down the Mi-
croTCA™ system. Furthermore, it is able to monitor and control several onboard temperature
conditions of the FRUs, their board voltages and their power supply status, manage hot swap
operations, reboot them, etc.
The AM5901 supports one standard RS-232 serial port, four Gigabit Ethernet connectors and
two SFP connectors for fabric interconnection and one Ethernet port for management purposes
as well as a variety of high-speed interconnect topologies to the MicroTCA™ system, such as 12
SerDes connections in the Gigabit Ethernet Fabric [A], 12 IPMB-L interfaces, and two IPMB-0
interfaces.
ID 1032-0648, Rev. 1.0
Introduction
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