Speaker
Description
Summary
The AMC13XG is constructed of a 3-board assembly. The tongue 1 board
houses the front-panel optics in a quad SFP+ cage, provides a 1 GbE
interface for configuration and control, and acquires DAQ data from
AMC cards over the MicroTCA backplane. Most functions are implemented
in a Xilinx Kintex XC7K325T FPGA in a 900 pin BGA package. This
device was chosen because it supports 16 high-speed (up to 12.5 Gb/s)
serial links and about 325,000 logic cells and is relatively
inexpensive. By comparison, the XC6VLX130T used in the first
generation AMC13 had about 130,000 logic cells and up to 6.6 Gb/s
serial links. The use of 10 Gb/s links required a complete PCB
redesign, including the selection of a particular high speed PCB base
material rather than the typical FR-4. Other changes to the tongue 1
board include the upgrade of the on-board memory to DD3 with 512 MB
capacity and 6.4 GB/s throughput. In principle the AMC13XG can
support a DAQ throughput approaching 3 GB/s with all 3 front-panel
links operating at 10 Gb/s.
The tongue 2 board houses a Xilinx Spartan XC6SLX25T FPGA, an Atmel
AVR32 microcontroller and most of the low-jitter clock fanout
circuitry. The Spartan FPGA provides housekeeping functions including
a flexible interface for download and programming of firmware into an
SPI flash memory and management of IP and MAC address setting. In
addition the Spartan FPGA distributes timing and trigger signals to
AMC modules via the MicroTCA backplane. The AVR32 microcontroller
implements a MicroTCA Module Management Controller (MMC) using firmware
produced by our Wisconsin colleagues. It provides for configuration
management, control and monitoring of module operation. This MMC
extends the MicroTCA standard to provide many additional features
valuable for CMS, including readout of up to 16 analog sensors, power
supply status inputs, multi-stage power enable and others.
The tongue 3 board shipped with the AMC13XG is a simple two-layer
board which provides access to JTAG and console signals for initial
programming and debug. The AMC13XG is customized for various
applications by installing a new tongue 3 board with can accommodate
for example discrete I/O for clock/control or a crosspoint switch for
trigger applications. Power and GPIO signals are provided on a
connector to tongue 3 for this purpose.
We present the new AMC13XG design, production testing, customization
and commissioning in the ongoing CMS upgrade project.
