New digital units are often combined units. Both FDR and CVR functions in one 'box'.
I stand to be corrected, EEngr, but I think you're referring to the ‘enhanced airborne flight recorder’ (EAFR). As I noted in the 787 thread (#2161, 3 Dec), according to the NTSB report on the Boston battery fire, the 787 is the only aircraft so far that
uses the EAFR to record CVR, FDR, and other data.
As it happens, the 787 EAFR seems to be problematic, but that's for another thread.
The upshot is that I'm assuming we're talking separate FDR and CVR in PK-AXC.