SLWSTK6000A Datasheet, PDF (4/80 Pages) Silicon Laboratories – ConfidentialMighty Gecko Wireless SoC EFR32MG1X232

EFR32MG1X232 Data Sheet
System Overview
3. System Overview
Confidential ^{3.1 Introduction}
The EFR32 product family features the world’s most energy friendly System-on-Chip radios. 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 intro-
duction to the full radio and MCU system. The detailed functional description can be found in the EFR32 Reference Manual.
3.2 Block Diagram
A block diagram of the EFR32MG1X232 is shown in Figure 3.1 Block Diagram on page 3.
Core / Memory
Clock Management
ARM Cortex^TM M4 processor
with DSP extensions and FPU
Memory
Protection Unit
Flash Program
Memory
RAM Memory
Debug Interface DMA Controlller
High Frequency
Crystal Oscillator
Low Frequency
RC Oscillator
Low Frequency
Crystal Oscillator
High Frequency
RC Oscillator
Auxiliary High
Frequency RC
Oscillator
Ultra Low
Frequency RC
Oscillator
Radio Transceiver
32-bit bus
Peripheral Reflex System
Serial I/F
I/O Ports
RFSENSE
DEMOD
BALUN
I
LNA
RF Frontend
PA
Q
PGA
Frequency
Synthesizer
IFADC
AGC
MOD
USART
Low Energy
UART^TM
I²C
External
Interrupts
General
Purpose I/O
Pin Reset
Pin Wakeup
Lowest power mode with peripheral operational:
EM0—Active
EM1—Sleep
EM2—Deep Sleep
EM3—Stop
Energy Management
Voltage
Regulators
Voltage Monitor
DC/DC Regulator
Power-On Reset
Brown-Out
Detector
Timers and Triggers
Timer/Counter
Low Energy
Timer
Pulse Counter
Protocol Timer
Watchdog Timer
Real Time
Counter and
Calendar
Cryotimer
EM4—Hibernate
Figure 3.1. Block Diagram
Other
CRYPTO
CRC
Analog I/F
ADC
Analog
Comparator
IDAC
EM4—Shutoff
3.3 System Description
3.3.1 Antenna interface
The 2.4 GHz antenna interface consists of two pins (2GRF_IOP and 2GRF_ION) that interface directly to the on-chip BALUN. The
2GRF_ION pin should be grounded externally.
The external components and power supply connections for the antenna interface in a typical application are shown in Section 5. Appli-
cation Circuits.
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