EFR32MG1B732F256 Datasheet, PDF (5/94 Pages) Silicon Laboratories – EFR32MG1 Mighty Gecko SoC with Integrated Serial Flash Data Sheet

3. System Overview
EFR32MG1 Mighty Gecko SoC with Integrated Serial Flash Data Sheet
System Overview
3.1 Introduction
The EFR32 product family combines an energy-friendly MCU with a highly integrated radio transceiver. This section gives a short intro-
duction to the full radio and MCU system. The detailed functional description can be found in the EFR32 Reference Manual.
A block diagram of the EFR32MG1 family is shown in Figure 3.1 Detailed EFR32MG1 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
Ordering 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
Co-Packaged Resources
512 kB Serial Flash Memory
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 EFR32MG1 Block Diagram
3.2 Radio
The Mighty Gecko family features a highly configurable radio transceiver supporting a wide range of 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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