Artesyn ARTM-831X Installation and Use (June 2014) - Manual (Page 71)

Functional Description
ARTM-831X Installation and Use (6806800M76E) 71
4.2.6.1 SFP Overhead Signals
The SFP overhead signals are routed to the FPGA_base device:
 SFP+ I2C control (FPGA I/O)
 Loss of signal (FPGA input, also routed to the Framer device)
 Transmitter disable (FPGA I/O)
 SFP present (FPGA input)
4.2.6.2 ESSI Signals
Both ESSI (per Framer) are routed via the mezzanine connector to the Zone 3 connector in
order to support APS for SONET signals. For details, see
ESSI Interface and Routing on page 89 .
On the E1/T1 only variant of the ARTM-831X assembly the same physical lines are partly used
to route the 166.7Hz multi-frame sync clock. For details, see
ESF Sync 166Hz Routing on page 81
4.2.7 On Board Resources (IPMI)
IPMI support on ARTM-831X is implemented by using the IPMI building block based on the
AMC Pigeon Point Reference Design. This building block is based on the 8-bit micro-controller
family AVR from Atmel, type ATmega128L.