SLWSTK6020A Datasheet, PDF (5/102 Pages) Silicon Laboratories – EFR32BG1 Blue Gecko Bluetooth® Smart SoC Family Data Sheet

3. System Overview
EFR32BG1 Blue Gecko Bluetooth® Smart SoCFamily Data Sheet
System Overview
3.1 Introduction
The EFR32 product family combines an energy-friendly MCU with a highly integrated radio transceiver. The devices are well suited for
any battery operated application as well as other systems requiring high performance and low energy consumption. This section gives a
short introduction to the full radio and MCU system. The detailed functional description can be found in the EFR32 Reference Manual.
A block diagram of the EFR32BG1 family is shown in Figure 3.1 Detailed EFR32BG1 Block Diagram on page 4. The diagram shows
a superset of features available on the family, which vary by OPN. For more information about specific device features, consult Order-
ing Information.
2G4RF_IOP
2G4RF_ION
PAVDD
RFVDD
IOVDD
AVDD
DVDD
VREGVDD
VREGSW
DECOUPLE
VSS
VREGVSS
RFVSS
PAVSS
RESETn
HFXTAL_P
HFXTAL_N
RFSENSE
BALUN
Radio Transciever
RF Frontend
I
LNA
PA
Q
PGA
Frequency
Synthesizer
DEMOD
IFADC
AGC
MOD
Energy Management
Voltage
Monitor
bypass
DC-DC
Converter
Voltage
Regulator
Brown Out /
Power-On
Reset
Reset
Management
Unit
LFXTAL_P / N
ARM Cortex-M4 Core
Up to 256 KB ISP Flash
Program Memory
Up to 32 KB RAM
Memory Protection Unit
Floating Point Unit
DMA Controller
Serial Wire Debug /
Programming
Watchdog
Timer
Clock Management
ULFRCO
AUXHFRCO
LFRCO
HFRCO
LFXO
HFXO
AA
HP
BB
Port I/O Configuration
Digital Peripherals
LETIMER
TIMER
CRYOTIMER
PCNT
RTC / RTCC
USART
Port
Mapper
LEUART
I2C
CRYPTO
CRC
Analog Peripherals
Internal
Reference
IDAC
VDD
VREF
12-bit ADC
VDD
Temp
Sensor
+
-
Analog Comparator
IOVDD
Port A
Drivers
PAn
Port B
Drivers
PBn
Port C
Drivers
PCn
Port D
Drivers
PDn
Port F
Drivers
PFn
Figure 3.1. Detailed EFR32BG1 Block Diagram
3.2 Radio
The Blue Gecko family features a radio transceiver supporting Bluetooth Smart^® and proprietary short range wireless protocols.
3.2.1 Antenna Interface
The 2.4 GHz antenna interface consists of two pins (2G4RF_IOP and 2G4RF_ION) that interface directly to the on-chip BALUN. The
2G4RF_ION pin should be grounded externally.
The external components and power supply connections for the antenna interface typical applications are shown in the RF Matching
Networks section.
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