AN332
4
Confidential Rev. 0.2
3. Terminology
SEN—Serial enable pin, active low; used as device select in 3-wire and SPI operation and address selection in
2-wire operation.
SDIO—Serial data in/data out pin.
SCLK—Serial clock pin.
RST or RSTb—Reset pin, active low
RCLK—External reference clock
GPO—General purpose output
CTS—Clear to send
STC—Seek/Tune Complete
NVM—Non-volatile internal device memory
Device—Refers to the FM Transmitter/AM/FM/SW/LW/WB Receiver
System Controller—Refers to the system microcontroller
CMD—Command byte
COMMANDn—Command register (16-bit) in 3-Wire mode (n = 1 to 4)
ARGn—Argument byte (n = 1 to 7)
STATUS—Status byte
RESPn—Response byte (n = 1 to 15)
RESPONSEn—Response register (16-bit) in 3-Wire mode (n = 1 to 8)
