CC2430-RTR1-F64Z datasheet(167/234 Pages) TI

167 / 234 page

CC2430

CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A

Page 167 of 232

The RF interrupt is the combined interrupt

from eight different sources in the radio.

Two SFR registers are used for setting the

eight individual RFIF radio interrupt flags

and interrupt enables. These are the RFIF

and RFIM registers.

The interrupt flags in SFR register RFIF

show the status for each interrupt source

for the RF interrupt vector.

The interrupt enable bits in RFIM are used

to disable individual interrupt sources for

the RF interrupt vector. Note that masking

an interrupt source in RFIM does not affect

the update of the status in the RFIF

Due to the use of the individual interrupt

masks in RFIM, and the main interrupt

mask for the RF interrupt given by

IEN2.RFIE there is two-layered masking

of this interrupt. Special attention needs to

be taken when processing this type of

interrupt as described below.

To clear the RF interrupt, S1CON.RFIF

and the interrupt flag in RFIF need to be

cleared. The order and method of doing

this is shown in Figure 40. Note that

S1CON is cleared after RFIF, otherwise

S1CON.RFIF could be set once again due

to the same interrupt.

MOV

RFIF,#00h

;clear all interrupt flags

MOV

S1CON,#00h

;clear main interrupt flags

MOV

RFIM,RFIM

;set interrupt mask

Figure 40: Clearing RF Interrupt

CC2430-RTR1-F64Z 데이터시트(PDF) 167 Page - Texas Instruments