Note that the BCM9WCDPLUS114 SmartBridge discussed in our slides/literature is essentially the same thing as the BCM9WCD1BRIDGE_1 reference design stocked by our distributors (product was renamed due to concerns over the PLUS suffix).
Avnet has these in stock: BCM9WCD1BRIDGE_1 Parts - Avnet Express
As does Mouser: BCM9WCD1BRIDGE_1 Broadcom | Mouser
This appears to be the board you have.
All SW for SmartBridge is included in the WICED SDK version 2.4.1 (will be re-added to SDK 3.5 when it is released):
- Libraries (source included)
- Example applications
- API documentation
USI Production PNs for the 1st generation BCM20702/BCM43362 based SmartBridge include: