7611 cp mode

hi. i use  my camera as input for  my 7611. the camera is 1920/1080p60. but i get 960/1080p60 in my tv . what's the problem?  btw, 7611works fine when the input is pc. i only change  the register 980106 to 980105. is that enough? when i change it to 980105. the freerun show pink. i don't know why.