Data Sheet

FSC-BT956B Datasheet
Shenzhen Feasycom Technology Co., Ltd www.feasycom.com
-10-
Module Pin Notes:
Note 1
For customized module, this pin can be work as I/O Interface.
Note 2
Full-speed USB interface for communicating with other devices, such as PC or USB card.
Note 3
When bluetooth connection established,
H = instruction mode
L = throughput mode
Note 4
When bluetooth connection established, a rising edge of the PIN will cause disconnection with remote
device.
Note 5
Note 6
The Debug UART is specially designed for communicating debug information with a PC host.
Note 7
Internal power outlet, the power supply to the SD card, external circuit need to connect a cap(1uF~4.7uF)
in series.
Note 8
I2C Serial Clock and Data.
It is essential to remember that pull-up resistors on both SCL and SDA lines are not provided in the module
and MUST be provided external to the module.
Note 9
LED(Default)-- Power On: Light Slow Shinning ; Connected: Steady Lighting.
Note 10
When the charging function is enabled,
H = charging
L = fully charged or not connected
Note 11
Charging power input (5V)
Note 12
By default, this PIN is an empty feet. This PIN can connect to an external antenna to improve the Bluetooth
signal coverage.
If you need to use an external antenna, by modifying the module on the 0R resistance to block out the
on-board antenna; Or contact Feasycom for modification.
Note 13
Digital MIC interface that converts analog signals to digital signals.
4. PHYSICAL INTERFACE
4.1 Power Supply
The transient response of the regulator is important. If the power rails of the module are supplied from an external
voltage source, the transient response of any regulator used should be 20μs or less. It is essential that the power rail
recovers quickly.
4.2 Audio Interfaces
4.2.1 ADC&DAC(Internal CODEC)
The audio codec has one channel voice ADC and audio DAC, which supports mono voice input and stereo audio output.
It also has flexible mixing and loopback paths to support variable scenario requirements, such as side tone, etc.
Dual channel 24 bits ADC and 24 bits stereo DAC
Support dual digital MIC
Stereo input for voice and audio band, input resistance is typically 4KΩ.
Integrated mic bias which don’t need external load capacitor with configurable output voltage
Stereo outputs are supported, could drive 16Ω/32Ω headphone, or act as line-out.
Support sample rate of 8, 11.025, 12, 16, 22.05, 32, 44.1 , 48 and 96 KHz.