A new national standard for Terrestrial Digital Multimedia Broadcasting (T-DMB) has been announced in Korea to provide high quality digital audio, video, and data broadcasting services to fixed, mobile, and portable receivers. We have developed FPGA/ASIC implementation of the T- DMB system. This Paper describes the features and functions of the newly developed T-DMB system. And we also present the design, implementation, and performance of the baseband chip for the T-DMB system. The chip was fabricated by using 0.25um 1P4M CMOS process.