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KD680RF—3SC为成都前导科技公司与美国C—Cube公司合作开发的低价位(100元多一点)VCD改装卡。再购上多倍速的光驱可组成简易VCD播放机,其总价格不到200元。信号流程:EFM(RF)→DSP处理MN6626→MPGE→1解码芯片CL680→音频D/A转换PCM1717E→信号切换74HC4053(见图1所示)。
KD680RF-3SC for Chengdu leading technology companies and the United States C-Cube co-developed a low-cost (more than 100 yuan) VCD modified card. The purchase of multi-speed optical drive can be composed of simple VCD player, the total price of less than 200 yuan. Signal Flow: EFM (RF) → DSP Processing MN6626 → MPGE → 1 Decoding Chip CL680 → Audio D / A Conversion PCM1717E → Signal Switching 74HC4053 (See Figure 1).