
PRODUCT SPECIFICATION
nRF9E5 Single Chip Transceiver with Embedded Microcontroller and ADC
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone +4772898900 - Fax +4772898989
Revision: 1.1
Page 46 of 104
June 2004
Table 37 explains the bit functions of the IE register
.
Bit
IE.7
Function
EA - Global interrupt enable. Controls masking of all interrupts. EA = 0 disables all
interrupts (EA overrides individual interrupt enable bits). When EA = 1, each interrupt
is enabled or masked by its individual enable bit.
Reserved. Read as 0.
ET2 - Enable Timer 2 interrupt. ET2 = 0 disables Timer 2 interrupt (TF2). ET2 = 1
enables interrupts generated by the TF2 or EXF2 flag.
ES - Enable Serial Port interrupt. ES = 0 disables Serial Port interrupts (TI and RI). ES
= 1 enables interrupts generated by the TI or RI flag.
ET1 - Enable Timer 1 interrupt. ET1 = 0 disables Timer 1 interrupt (TF1). ET1 = 1
enables interrupts generated by the TF1 flag.
EX1 - Enable external interrupt 1. EX1 = 0 disables external interrupt 1 (INT1_N). EX1
= 1 enables interrupts generated by the INT1_N pin.
ET0 - Enable Timer 0 interrupt. ET0 = 0 disables Timer 0 interrupt (TF0). ET0 = 1
enables interrupts generated by the TF0 flag.
EX0 - Enable external interrupt 0. EX0 = 0 disables external interrupt 0 (INT0_N). EX0
= 1 enables interrupts generated by the INT0_N pin.
IE.6
IE.5
IE.4
IE.3
IE.2
IE.1
IE.0
Table 37 IE Register – SFR 0xA8.
Table 38 explains the bit functions of the IP register
.
Bit
IP.7
IP.6
IP.5
Function
Reserved. Read as 1.
Reserved. Read as 0.
PT2 - Timer 2 interrupt priority control. PT2 = 0 sets Timer 2 interrupt (TF2) to low
priority. PT2 = 1 sets Timer 2 interrupt to high priority.
PS - Serial Port interrupt priority control. PS = 0 sets Serial Port interrupt (TI or RI) to
low priority. PS = 1 sets Serial Port interrupt to high priority.
PT1 - Timer 1 interrupt priority control. PT1 = 0 sets Timer 1 interrupt (TF1) to low
priority. PT1 = 1 sets Timer 1 interrupt to high priority.
PX1 - External interrupt 1 priority control. PX1 = 0 sets external interrupt 1 (INT1_N)
to low priority. PT1 = 1 sets external interrupt 1 to high priority.
PT0 - Timer 0 interrupt priority control. PT0 = 0 sets Timer 0 interrupt (TF0) to low
priority. PT0 = 1 sets Timer 0 interrupt to high priority.
PX0 - External interrupt 0 priority control. PX0 = 0 sets external interrupt 0 (INT0_N)
to low priority. PT0 = 1 sets external interrupt 0 to high priority.
IP.4
IP.3
IP.2
IP.1
IP.0
Table 38 IP Register – SFR 0xB8.