Sfp+ Status Signals; Sfp Control Signals; Gps Connectors; Fpga - Emerson RTM-ATCA-F125 Installation And Use Instruction

Functional Description
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
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
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:
Access to control and status signals on SFP and SFP+ sites
Access to control and status signals on the two BCM8747s
Provision of I2C interfaces to SFP sites
Reset handling
SPI Flash programmer and multiplexing for BCM8747 configuration
UART with selectable outputs for the optional GPS receiver (functionality not initially
implemented)
44
Chapter 4, FPGA, on page 44
Chapter 4, FPGA, on page 44
RTM-ATCA-F125 Installation and Use (6806800K30C)
for further