电子器件针脚 术语（Electronic device stitching term）.doc

电子器件针脚 术语（Electronic device stitching term） A/D: analog-to-digital conversion. AC: communication. ADDRESS: the ADDRESS line. AF: audio. AFC: automatic frequency control, controlling the base frequency clock circuit. In GSM cell phone circuit, as long as see AFC word, immediately can conclude that the signal line controls the 13MHz circuit. The abnormal signal may result in the phone being unable to enter service state, causing the phone to not turn on. Some phones have AFC labeled VCXOCONT. AGC: automatic gain control. This signal usually appears in the low noise amplifier of the receiver circuit, and is used to control the receivers front end amplifier to provide a more stable signal to the back - stage circuit at different intensity signals. ALERT: alarm. An audio circuit that is used to prompt a user to enter or operate an error. ALRT: the ring circuit. AMP: amplifier. Used in the circuit diagram of the cell phone. AMPS: advanced mobile phone system. ANT: an antenna. It is used to convert high-frequency electromagnetic waves into high-frequency currents or to convert high-frequency signals into high-frequency electromagnetic waves. In the schematic diagram of the circuit, the antenna and antenna circuit can be easily found by finding ANT. ANTSW: switch control signal. AOC: automatic power control. The power amplifier (commonly used in MOTOROLA phones) usually appears in the cell phone transmitter. AOC - DRIVE: automatic power control reference level. ASIC: application-specific integrated circuits. In mobile phone circuits, it usually contains multiple functional circuits, providing many interfaces and mainly completing various control of mobile phones. AUC: authentication center. AUDIO: AUDIO. AUX: assistant. AVCC: audio power supply. BACKLIGHT; A backlight. BALUN: balanced/unbalanced conversion. BAND: BAND. BAND - SELECT: frequency selection. It only appears in a dual-frequency cell phone or a three-frequency cell phone circuit. The signal controls the frequency