Adopting the four pins of TAP:Test Data In,Test Data Out,Test Clock,Test Mode Select of TM1300 and the experiment realized the hardware connection with EPP of PC through CPLD,electric level match.

• 采用TM1300的测试访问端口控制器TAP中的Test DataIn；Test Data Out；Test Clock和Test Mode Select4个信号管脚；通过CPLD和电平匹配；实现了与PC机增强型并口协议并口的硬件连接.