XAUI Interface

The XAUI (10 Gigabit Attachment Unit Interface) standard is used in Ethernet applications to extend the reach of XGMII (10 Gigabit Media Independent Interface) connections to include board-board applications. It is intended for use in applications such as 10G Ethernet MACs.

It uses four self-clocked serial differential links in each direction to achieve 10 Gbps data throughput using a much lower pin count than the XGMII. The XAUI Interface implements XGXS (XAUI Extender Sublayer) functions by converting between the internal XGMII and the external XAUI interfaces.

Jennic’s XAUI Interface provides a complete interface solution including the external off-chip interface, including the IO cells and SerDes, and the Physical Coding Sublayer.

Block Diagram

Features

• Fully Integrated XAUI interface solution
• Conforms to IEEE 802.3ae (XAUI Extender Sublayer)
• Supports transmission rates of 12 Gbps, date rate of 10 Gbps
• Integrated IO cells, PLL and SerDes functions
• Shared PLL architecture to reduce jitter and power consumption
• Performs 8b/10b encoding/decoding
• Aligns received 10bit data on each lane to code group boundaries
• Aligns incoming lanes
• Lane striping/destriping
• Converts XGMII Idle control characters
• Performs link initialisation
• Reports local_fault & remote_fault link status
• Transfers incoming data onto common receiver clock
• Compensates for lane-lane clock skew
• Performs clock division between transceiver interface and core at half rate
• Supports the MII management register set for status & control

Benefits

• Based on Jennic's MPIO XAUI/ Serial RapidIO technology
• Implemented in a foundry independent 0.13µm CMOS technology
• Available as a complete interface solution or as individual component building blocks.
• Provided as a combined hard and soft IP core
• Available in a number of product variants to match customer, system and technology requirements
• Other related MPIO products include Serial RapidIO and SxI-5 interfaces

Options

• Available as a complete interface solution or as individual component building blocks.
• A number of product variants are available to match customer, system and technology requirements