| 摘要 |
<p>An interface (100) is provided between an accessory (102) and a radio (104) to enable three functions over a single signal line (140) thereby minimizing pin count in a connector (112). The functions of accessory detect, one-wire memory and accessory PTT press are controlled over the single signal line (140) through the use of two comparators (116, 118) and two voltage dividers (106, 108, 110).</p> |
