The AB0312 is a carrier that can be combined with Clockworks A2B modules to make a sub-node of an A2B system. The AB0312 includes an I2S expansion connector for adding ADCa and DACs to the system to create complex A2B based applications.
It's mostly intended to use with the Clockworks AB0337 AD2437 based module as the AB0312 has up and downstream RJ45 connectors that implements Analog Devices RJ45 A2B connector definition. The AB0312 can be configured for 2 wire A2B on the A port (requires jumper removal/addition - 0603 sized jumpers).
There are other options: The AB0331 AD2437 module with UTP connectors (2 pin DuraClik) can be used, For AD2428 development use the AB0001 module. It's also possible to use the AB0331 AD2433 module with this board though that requires a little hacking to set up.
This is a new product and available in limited quantities at this time. Datasheet and technical details will be placed on the main Clockworks website soon and this text will be replaced by a link, if you need more information now please contact us directly.