参数资料
型号: 4431-T-B1 D 470
厂商: Silicon Laboratories Inc
文件页数: 23/47页
文件大小: 799K
描述: KIT DEV TEST EZRADIOPRO SI4431
标准包装: 1
附件类型: 测试卡,收发器,470MHz
适用于相关产品: EZRadioPRO?
Si4430/31/32-B1
Rev 1.1
23
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
03h04h) 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 05h06h). 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.
See AN440: EZRadioPRO Detailed Register Descriptions for a complete list of interrupts.
Add R/W Function/Descript
ion
D7
D6
D5
D4
D3
D2
D1
D0
POR Def.
03
R
Interrupt Status 1
ifferr
itxffafull
itxffaem
irxffafull    iext    ipksent    ipkvalid    icrcerror

04
R
Interrupt Status 2
iswdet
ipreaval    ipreainval
irssi
iwut
ilbd
ichiprdy
ipor

05   R/W    Interrupt Enable 1
enfferr   entxffafull   entxffaem  enrxffafull enext  enpksent  enpkvalid encrcerror
00h
06   R/W    Interrupt Enable 2    enswdet  enpreaval enpreainval    enrssi    enwut    enlbd    enchiprdy    enpor
01h
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