Pemalite said:

Sony isn't in the game of designing processing chips from scratch anymore.

And when you wake up Wednesday there will be Sony Electronics Corporation.

Sony Electronics Corporation will incorporate the three businesses that comprise its Electronics Products & Solutions (“EP&S”) segment: Imaging, Home Entertainment, Mobile, all of which deal with designing and making chips from scratch. So it is not inconceivable at all the ssd controller could have been designed (almost) entirely in-house.