MRF89XAM8A-I Datasheet, PDF (92/140 Pages) Microchip Technology – Ultra Low-Power, Integrated ISM Band Sub-GHz Transceiver

MRF89XA
To make the MRF89XA device enter into Sleep 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
EXAMPLE 3-1:
TO PUT THE MRF89XA
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
3.13.1 POWER-SAVING MODE
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)
• CLKOUTREG (Register 2-28)
DS70622C-page 92
Preliminary
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