Renesas production CRT TV ATSC digital TV decoder LSI

Renesas Technology Corp (Renesas Technology) recently released the R8A66950BG digital TV decoder LSI in accordance with ATSC standard. The product will be mass production in Japan in October 2005.

R8A66950BG analog video signal is converted to display 480i standard, MPEG-2 TS standard digital signal in accordance with the ATSC standard, and PCM (pulse encoding modulation) audio signal input and output to SDTV (standard definition television). R8A66950BG enables the existing analog TV to have the ability to receive digital broadcasting at a low cost.

R8A66950BG can provide the following main characteristics:

(1) only need to connect an external DRAM (256Mbit DDR333) can carry out the work

R8A66950BG only need to add a 16 bit 256Mbit DDR333, to support the implementation of various processing of digital TV broadcasting. This reduces the number of components and reduces the cost of digital systems.

(2) simplified for the existing analog TV to increase digital television function design of R8A66950BG LSI functions and interface specification after optimization methods can be used to easily convert digital TV function to the traditional analog tv. This will make full use of the existing analog TV design resources, help to reduce the cost of digital design.

(3) low power consumption and low pin count package

Low-power (1.5W) design in I/O and decrease in the number of signals, can help with a size of 297 23mm * 23mm Mini BGA package, effectively saving the product space.

In order to realize digital TV, audio and video, data and other input signal and TS data, and decoding the compressed image data, such as text or graphics format conversion and information processing are separated by the superposition is very necessary. The decoder LSI can use a common internal bus, the use of external DRAM work area to achieve a variety of processing functions.

R8A66950BG realized the original technology of bus arbitration, the circuit (DDR controller) are connected with the external DRAM, the external bus can be maintained in the bandwidth of 162MHz/16bit, which helps to use an external DRAM (256Mbit DDR333) processing. In this way, it can realize the function of digital TV with low system cost.