Data Sheet

FSC-BT806BDatasheet
Shenzhen Feasycom Technology Co.,Ltdwww.feasycom.com
-28-
1.8V or 2.6V
Tolerance 90% to 110%
Output current:
70uA to 2.8mA
No load capacitor required
Digital Microphone Inputs
FSC-BT806B interfaces to 2 digital MEMS microphones. shows that 4 of the inputs have dedicated codec
channels and 2 are multiplexed with the high-quality ADC channels.
Clock lines shared between 2 microphone outputs, linked to any even-numbered PIO pin as
determinedby the firmware.
Note:
Multiple digital microphones can share the same clock if they are configured for the same frequency,
e.g. 1 clock for 6 digital microphones.
Data lines shared between 2 microphone inputs, linked to any odd-numbered PIO as determined by
thefirmware.
Note:
For the digital microphone interface to work in this configuration ensure the microphone uses a
tristatebetween edges.
The left and right selection for the digital microphones are appropriately pulled up or down for
selection on the PCB.
Line Input
The picture belowshow 2 circuits for line input operation and show connections for either differential or
single-ended inputs.
In line input mode, the input impedance of the pins to ground varies from 6kΩto 34kΩdepending on input gainsetting.
Figure 15: Differential Input