Looking for datasheet on CSM10093AN

[Timmy73]

Hey yall. So a while back I tore down an answering machine that had a speech synthesis feature, and recently I was taking a look at the board to see if there was anything useful. I was looking for the chip responsible for the speech synthesis and I think I have found it.
The chip is a CSM10093AN.
The problem is that I cant find any datasheet or anything online for it and was wondering if anyone could help me out.
Thanks!