SI4430-B1-FMR Silicon Laboratories Inc, SI4430-B1-FMR Datasheet - Page 23

• Manufacturer Part Number: SI4430-B1-FMR
• Description: IC TXRX 900-960MHZ -8-13DB 20QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4430-B1-FMR

• Mfg Application Notes: Transitioning SI4430/31 to Rev B
• Frequency: 900MHz ~ 960MHz
• Data Rate - Maximum: 256kbps
• Modulation Or Protocol: ISM
• Applications: General Purpose
• Power - Output: 13dBm
• Sensitivity: -121dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 18.5mA
• Current - Transmitting: 30mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

3.3. Interrupts
The Si4430/31/32 is capable of generating an interrupt signal when certain events occur. The chip notifies the
microcontroller that an interrupt event has occurred by setting the nIRQ output pin LOW = 0. This interrupt signal
will be generated when any one (or more) of the interrupt events (corresponding to the Interrupt Status bits) shown
below occur. The nIRQ pin will remain low until the microcontroller reads the Interrupt Status Register(s) (Registers
03h–04h) containing the active Interrupt Status bit. The nIRQ output signal will then be reset until the next change
in status is detected. The interrupts must be enabled by the corresponding enable bit in the Interrupt Enable
Registers (Registers 05h–06h). All enabled interrupt bits will be cleared when the microcontroller reads the
interrupt status register. If the interrupt is not enabled when the event occurs it will not trigger the nIRQ pin, but the
status may still be read at anytime in the Interrupt Status registers.
Add R/W Function/Descript
See “AN440: EZRadioPRO Detailed Register Descriptions” for a complete list of interrupts.
03
04
05 R/W
06 R/W
R
R
Interrupt Enable 1
Interrupt Enable 2
Interrupt Status 1
Interrupt Status 2
ion
enswdet enpreaval enpreainval
enfferr
iswdet
ifferr
D7
entxffafull entxffaem enrxffafull enext enpksent enpkvalid encrcerror
ipreaval
itxffafull
D6
ipreainval
itxffaem
D5
Rev 1.1
irxffafull
enrssi
irssi
D4
enwut
iwut
iext
D3
Si4430/31/32-B1
ipksent
enlbd
ilbd
D2
enchiprdy
ichiprdy
ipkvalid
D1
icrcerror
enpor
ipor
D0
POR Def.
00h
01h
—
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