DM642原理图，4个TVP5150输入，1个SAA7105输出，cpld为3128，非常好的开发DM642参考图，pdf文档可以搜索。-DM642 schematics, four TVP5150 input, a SAA7105 output, cpld for 3128, very well developed DM642 reference map, pdf documents can search.
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