Emerson RTM-ATCA-F125, Инструкция по установке и использованию

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Functional Description
RTM-ATCA-F125 Installation and Use (6806800K30C )
44
4.4.6.2 SFP+ Status Signals
The SFP+ status signals, MOD_ABS, TX_FAULT and LOS, are individually connected to the
corresponding BCM8747 which monitors them. The signals are also connected to the RTM
FPGA to allow fast detection of a loss of signal condition. Refer to
Chapter 4, FPGA, on page 44
for further details.
4.4.6.3 SFP Control Signals
The SFP+ TX_DISABLE signals are individually connected to the corresponding BCM8747 which
drives them under software control.
The RS0 and RS1 rate select signals from each SFP+ are individually connected to the RTM FPGA
that allows them to be controlled by software. Refer to
Chapter 4, FPGA, on page 44 for further
details.
4.5 GPS Connectors
The 1PPS, 10MHz, and TOD inputs for connection to an external GPS receiver are not
supported at present.
4.6 FPGA
The RTM-ATCA-F125 includes a Xilinx XC3S200A-4 FPGA that which performs the following
functions:
z
Access to control and status signals on SFP and SFP+ sites
z
Access to control and status signals on the two BCM8747s
z
Provision of I2C interfaces to SFP sites
z
Reset handling
z
SPI Flash programmer and multiplexing for BCM8747 configuration
z
UART with selectable outputs for the optional GPS receiver (functionality not initially
implemented)