TTL theem ntawm USB rau UART cable feem ntau yog 3.3V lossis 5V. Nyob ntawm qhov tsim ntawm lub cable thiab cov nti hom, qee cov cables tuaj yeem xaiv cov qib sib txawv ntawm cov jumpers lossis cov chaw. Feem ntau FTDI chips txhawb nqa ob tus qauv hluav taws xob, yog li thaum siv USB rau UART cable, nws raug nquahu kom paub meej tias qhov ntsuas hluav taws xob puas sib haum nrog cov khoom sib txuas kom tsis txhob ua rau lub cuab yeej puas.
Koj Tseem Nyiam
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