MRF89XAM8A-I Datasheet, PDF (50/140 Pages) Microchip Technology – Ultra Low-Power, Integrated ISM Band Sub-GHz Transceiver

MRF89XA
2.19 Oscillator Configuration Registers
2.19.1 CLOCK OUTPUT CONTROL
REGISTER DETAILS
REGISTER 2-28: CLKOUTREG: CLOCK OUTPUT CONTROL REGISTER
(ADDRESS:0x1B) (POR:0xBC)
R/W-1
R/W-0
R/W-1
R/W-1
R/W-1
R/W-1
r
CLKOCNTRL
CLKOFREQ<4:0>
—
bit 7
r
—
bit 0
R = Readable bit
-n = Value at POR
r = Reserved
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
bit 6-2
bit 1-0
CLKOCNTRL: Clock Output Control bit
This bit enables the Clock Output from the transceiver.
1 = Enabled (default), Clock frequency set by Clkout_freq (default)
0 = Disabled
CLKOFREQ<4:0>: Clock Out Frequency bits
These bits indicate value of the frequency of the Clock output.
CLKOFREQ<4:0> = 01111 Î f_c = 427 kHz (default)
f_clkout = f_xtal if CLKOFREQ<4:0> = 00000
or
f_clkout = f_xtal / (2 * CLKOFREQ), for CLKOFREQ<4:0> ≠ 00000
Where,
CLKOFREQ is the value in the register
f_clkout is the output frequency
f_o is the local oscillator frequency
f_xtal is the crystal oscillator frequency
Reserved<1:0>: Reserved bits; do not use
00 = Reserved (default)
DS70622C-page 50
Preliminary
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