RF31 Hope Microelectronics co., Ltd, RF31 Datasheet - Page 19

• Manufacturer Part Number: RF31
• Description: Rf31 Ism Receiver
• Manufacturer: Hope Microelectronics co., Ltd

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3.3. Interrupts
The RF31 is capable of generating an interrupt signal when certain events occur. The chip notifies the
microcontroller that an interrupt event has been detected 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. All of 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 inside of the chip it will not
trigger the nIRQ pin, but the status may still be read correctly at anytime in the Interrupt Status registers.
See ―Register 03h. Interrupt/Status 1,‖ and ―Register 04h. Interrupt/Status 2,‖ for a complete list of interrupts.
3.4. Device Code
The device version code is readable from "Register 01h. Version Code (VC)". This is a read only register.
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03
04
05
06
01
R/W
R/W
R/W
R/W
R
R
R
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Interrupt Enable 2
Interrupt Status 1
Interrupt Status 2
Interrupt Enable1
Function/De
Function/Description
scription
Device Version
enswdet
iswdet
enfferr
ifferr
D7
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enpreaval
D7
Reserved
Reserved
ipreaval
0
D6
D6
0
enpreainval
Reserved
ipreainval
Reserved
D5
D5
0
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vc[4]
D4
enrxffafull
irxffafull
enrssi
irssi
D4
vc[3]
D3
enwut
enext
iwut
iext
D3
vc[2]
D2
Reserved
Reserved
enlbd
ilbd
D2
vc[1]
D1
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vc[0]
enpkvalid
enchiprdy
D0
ichiprdy
ipkvalid
R F 3 1
D1
POR Def.
00h
icrcerror
encrcerr
enpor
ipor
D0
or
Notes
—
—
POR
DV
Def.
00h
01h
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