一些芯片模块简称的含义

[xiaowenge]

CPU: Central Processing Unit，中央处理器
PSRAM： pseudo static ram
Nan: nand flash，与非型闪存
Nor: nor flash，或非型闪存
eMMC: Embedded Multi Media Card
PMU: Power Management Unit
vBat: Battery Voltage
CSI: Camera Serial Interface
RF: Ratio Frequency
TDM: Timing Division Multiplexing
Audio Codec: 音频编解码器
I2S/PCM: Inter-IC Sound/Pulse Code Modulation
DMIC: Digital MIC
SPDIF/OWA: Sony/Philips Digital Interface One Wire Audio
MAD: Mac Activity detector
AEC: adaptive echo cancellation, 自适应回声消除
CPUs: small CPU，通常说的小核，为主核提供辅助控制，如主核休眠时的唤醒控制等
CCU/PLL: CCU是旧的叫法，现在称为CCMU(Clock Control management unit)/Phase-Locked Loop
RTC: Real Time Clock
Timer: 定时器
DMA: Direction memory access
PSI: Peripheral System Interconnect
GIC: Generic Interrupt Controller
SS/CE: Security System/Crypto Engine
Trustzone : 安全空间
eFuse: Electrical Fuse, a one-time programmable memory
SRAM: Static Random Access Memory
BROM: Boot rom
LEDC: LED Controller
USB: Universal Serial Bus
GMAC: Giga Medium Access Control
UART: Universal Asynchronous Receiver Transmitter
SPI: Serial Peripheral Interface
TWI: Two Wire Interface，全志喜欢叫这个名字，其实就是I2C
RSB: Reduced serial bus
THS: Thermal Sensor
PWM: Pulse width modulation
LRADC: Low Resolution ADC
GPADC: General Purpose ADC
IR: Infrared Radiation
GPIO: General Purpose Input Output
PMIC: Power Management IC