TVP5150AM1, forcing to NTSC-M mode

I am designing a freeze frame card for out intra-oral dental camera, it's video output is NTSC-M s-video (Y/C). I am using the TVP5150AM as the decoder. When the device is first powered on there is no video from the camera. Question is if I force the TVP5150 to NTSC-M register 28 = 02, assuming the clock and data outputs are enable will they be active, and NTSC-M? 

My initialization for the TVP5150 is:

Reg#        Data

00             01 (S-video)

01             15 (AGC = default)

02             30 (TV)

03             09  (Data and clock outputs enabled)

04             3C (Auto switch disabled)

28              02 (force NTSC-M video standard)

Thanks, Steve McCown