In Cisco IOS routers, which chipset is the PVDM-12 DSP hardware based on?

A.
C542

B.
C549

C.
C5510

D.
C5421

E.
C5409

Explanation:
NM-HDV has five SIMM sockets (called Banks) that hold the PVDM-12 cards. Each PVDM-12 card
contains three TI 549 DSPs.

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/7x/uc7_0/media.html