Clockworks has added a new AD2437 based module for developers looking for off the shelf solutions for developing, prototyping, and testing the latest generation of A²B devices.

As with the prior generation AD2428 modules, this AD2437 based one brings out all of the digital I/O: I²S, I²C, SPI, and GPIO/PWM.  To handle the increased number of signals, as well as the new higher power (50W) CFG4 power scheme, the connectors of the original AD2428 module have been extended with the new signals.  This keeps the AD2437 module backwards compatible with the older AD2428 modules and the AD2428 modules forward compatible with the newer connector arrangement.

One important caveat is the phantom bus power differences between the AD2428 systems (CFG0, up to 9V) and the AD2437 (CFG4, up to 24V).  The AD2437 based module uses a red Duraclik connector to warn users not to mix AD2437 and AD2428 systems without isolating the phantom power portion.

To simplify A²B development Clockworks has also introduced a new evaluation board that can be used with either AD2428 or AD2437 based modules.  An ADAU1761 SigmaDSP provides local DSP capability as well as stereo analog audio I/O.

The board is jumper selectable to act as either the root node or a peripheral node in an A²B network. Multiple boards can be used to increase I/O counts, A²B guarantees synchronization and a low, fixed latency (about 2.5 samples) regardless of node count.  SigmaStudio+ and ADI's USBi are used for A²B application  development.

Details about the module and EVM kit are available on the Clockworks website.