How are people in the US connecting the PS3 to Y Pb/Cb Pr/Cr? The Japan model uses a D-terminal to component that supports 1080i but how do people get the deeper colors using the Y Pb/Cb Pr/Cr connection with the US model at 1080i? The AV MULTI connector only goes up to 480p.

Are you just using HDMI and RGB?

Input connector on the TV Supported video modes (NTSC region)
HDMI 1080p / 1080i / 720p / 480p
Component / D-Terminal 1080p / 1080i / 720p / 480p / 480i
Composite / S Video 480i
AV MULTI / SCART 480p / 480i

HDMI to Y Pb/Cb Pr/Cr through a breakout cable?