Philips Semiconductors (now NXP Semiconductors) developed a simple bidirectional 2-wire bus for efficient inter-IC control. This bus is called the Inter-IC or I2C-bus. Only two bus lines are required: a serial data line (SDA) and a serial clock line

This document defines the low speed electrical and management interface specifications for enhanced Small Form Factor Pluggable(SFP+) modules and hosts. The SFP+ module is a hot pluggable small footprint serial-to-serial data-agnostic optical transc