Bcm84754 Status; Fabric Sfp+ Connection; Sfp+ I 2 C Bus; Sfp+ Status Signals - SMART Embedded Computing RTM-ATCA-F140 Series Installation & Use Manual

Functional Description
4.5.5

BCM84754 Status

The LASI signals from each BCM84754 port are individually connected to the RTM FPGA
to allow them to be monitored by software. The LASI signals can also generate an interrupt
to the front blade. Refer to
4.5.6

Fabric SFP+ Connection

This is the same as the base SFP+ connection. Refer to
2
4.5.6.1 SFP+ I
The SFP+ I
connected to the BCM84754 which includes a mechanism to allow access to the port
through the PHY management channel.
4.5.6.2

SFP+ Status Signals

The SFP+ status signals, MOD_ABS, TX_FAULT and LOS, are individually connected to
the BCM84754 which monitors them. The signals are also connected to the RTM FPGA to
allow fast detection of a loss of signal condition. Refer to
further details.
4.5.6.3

SFP+ Control Signals

The SFP+ TX_DISABLE signal is individually connected to the BCM84754 which drives it
under software control.
The RS0 and RS1 rate select signals from each SFP+ that are tied together and connected
to the RTM FPGA that allows them to be controlled by software. Refer to
on page 67
62
GPS Connectors on page 67
C Bus
2
C bus signals (I2C_SDA and I2C_SCL) from each SFP+ site are individually
for further detail.
RTM-ATCA-F140 Series Installation and Use (6806800M97M)
Functional Description
for further details.
SFP+ Connection on page
GPS Connectors on page 67
GPS Connectors
59.
for