User's Manual

January
2016 DocID0xxxxx Rev 0.17
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change
without notice. www.st.com
SPBT3.0DP1 Module Block Diagram
RF antenna
Battery or External Supply
1.8V
32.768 kHz
SPBT 3.0DP1 Bluetooth Audio Module
INTERNAL
RF Filter
&
BALUN
Crystal
26 MHz
clock
UART
26.000 MHz
GPIO
SYSTEM
(OPTIONAL) EXTERNAL LPCLK (32.768 KHz)
1.8V
Integrated
Voltage Regulator
HCI SPI
1.8V
Bluetooth RADIO
&
AUDIO Coprocessor
STLC2690
Host Controller
interface
PCM / I2S
AUDIO
INTERFACE
PCM / I2S
I2S
ARM Cortex MCU
STM32F411CEY6
Internal / Ext.
32.768 kHz
clock
RESET
BOOT0
BOOT1,etc.
UART
user
interface
GPIO user
interface
I2S
AUDIO
INTERFACE
32.768 kHz
crystal
oscillator
1.8V
Figure 2: Block Diagram