MRF89XA
To make the MRF89XA device enter into Sleep mode,
3.13.1
POWER-SAVING MODE
certain control register values must be initialized. The
sequence to program the control registers for entering
into Sleep mode and Wake-up modes are as follows:
For Sleep mode:
1. Check the IRQ bit status
2. Handle Interrupts
3. Configure the GCONREG register
4. Set/Reset CLKOUT in the CLKOUTREG
register
REGISTERS
The registers associated with power-saving modes
are:
? GCONREG ( Register 2-1 )
? DMODREG ( Register 2-2 )
? FDEVREG ( Register 2-3 )
? BRSREG ( Register 2-4 )
? FTXRXIREG ( Register 2-14 )
? FTPRIREG ( Register 2-15 )
EXAMPLE 3-1:
TO PUT THE MRF89XA
?
CLKOUTREG ( Register 2-28 )
INTO SLEEP MODE
Set CMOD<2:0> (GCONREG<2:0>) = 0
The MRF89XA device can wake up from any interrupt
activity.
For Wake-up mode perform any one the following task:
? Enter in TX/RX mode
? Enable CLKOUT
? Set the INT pin
EXAMPLE 3-2:
TO WAKE THE MRF89XA
FROM SLEEP MODE
Set CMOD<2:0> (GCONREG<2:0>) = 1
DS70622C-page 92
Preliminary
? 2010–2011 Microchip Technology Inc.
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