User Manual

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22 JN-DS-JN5139 v1.5 © Jennic 2008
7.3 Hardware Interrupts
Hardware interrupts generated from the transceiver, analogue or digital peripherals and DIO pins are individually
masked using the Programmable Interrupt Controller (PIC). Management of interrupts is provided in the peripherals
library. Further details of interrupts are provided for the functions in their respective sections in this datasheet.
Interrupts are used to wake the JN5139 from sleep. The peripherals, baseband controller, security coprocessor and
PIC are powered down during sleep but the DIO interrupts and optionally the wake-up timers and analogue
comparator interrupts remain powered to bring the JN5139 out of sleep.
Wake-up
Timers
Baseband
Controller
Hardware
Interrupt
Security
Coprocessor
DIO Pins
UART0
UART1
Timer0
Timer1
2-wire Serial
Interface
SPI Controller
Intelligent
Peripheral
Analogue
Peripheral
Programmable
Interrupt
Controller
Figure 13: Programmable Interrupt Controller