CP2114 supports record mute by USB host or GPIO pin. CP2114 mutes Record when the USB host sends an Audio Class-Specific request SET_CUR (0x01) to mute the Record audio. In addition, single-pressing the Record Mute button (GPIO.0 by default) will toggle between record mute and unmute states. The Record Mute LED (GPIO.4 by default) is turned on/off accordingly for both control methods.
For Windows machine, the CP2114 device record can be muted with following steps:
The Record Mute LED on CP2114 evaluation board will be toggled as well.
1. Record Mute controlled by Host PC is available for CP2114-B02 revision only. See CP2114 Errata for more information.
2. Record functionality must be enable. User can test with the index 0 of preprogrammed configuration by installing all jumpers of GPIO.5 ~ GPIO.8 on the CP2114 EVB.