> It's most certainly the Titan from Intrinsity/AMCC

The only Titan core based chip that has been announced is the APM83290, which is available just up to 1.5 GHz. The X1000's CPU is announced to have 1.8 GHz.

> what else can it be?

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=6775&forum=11#69373
https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=7001&forum=3&start=40#72160
https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=7001&forum=3&start=60#72176

:-)