第一解调器接收数字信号，并首次通过数字输出信号引脚的MPEG信号。
The first demodulator receives the first digital signal and outputs an MPEG signal via the digital signal pins.
将数字管脚初始化为输出信号。
其中一个问题是芯片太“过于智能”了——与普通芯片的数字脉冲输出不同，它的输出是模拟信号，因此用于数字芯片的测试程序被它干扰了。
Part of the problem is that the chip is just too intelligent - rather than a standard digital pulse it produces an analogue output that flummoxes the standard software used to test chips.
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