Why I know the answer to this, and neither AJA or Blackmagic make it.
It's made by Cobalt Digital, and it fits right into an OpenGear chassis, so you can mix and match with all the Blackmagic cards ! -
TIMECODE AND LTC EMBEDDING/DE-EMBEDDING
+LTC - Timecode Prioritization and LTC Embedding/De-Embedding Solution
Cobalt is enhancing the capabilities of their 9000 series COMPASS® and Fusion3G® cards by offering options for a complete timecode prioritization and LTC embedding/de-embedding solution. The new option, +LTC, allows bidirectional transfer and conversion between VBI timecode formats and audio LTC, as well as RS-485 LTC. Audio LTC can be received over selected balanced analog audio, embedded or AES input channels, and sent as digital audio over selected embedded or AES output channels. End-users can easily set timecode priorities via the DashBoard GUI. If preferred format is detected, it is automatically selected. If not, another format is used as previously established in a priority list by the end-user.