mrf89xa Microchip Technology Inc., mrf89xa Datasheet - Page 53

• Manufacturer Part Number: mrf89xa
• Description: Ultra-low Power, Integrated Ism Band Sub-ghz Transceiver
• Manufacturer: Microchip Technology Inc.

2.19
2.19.1
REGISTER 2-28:
© 2010 Microchip Technology Inc.
bit 7
R = Readable bit
-n = Value at POR
r = Reserved
bit 7
bit 6-2
bit 1-0
CLKOCNTRL
R/W-1
Oscillator Configuration Registers
CLOCK OUTPUT CONTROL
REGISTER DETAILS
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
f
or
f
Where,
CLKOFREQ is the value in the register
f
f
f
Reserved<1:0>: Reserved bits; do not use
00 = Reserved (default)
clkout
clkout
clkout
o
xtal
is the local oscillator frequency
R/W-0
is the crystal oscillator frequency
= f
= f
is the output frequency
CLKOUTREG: CLOCK OUTPUT CONTROL REGISTER
(ADDRESS:0x1B) (POR:0xBC)
xtal
xtal
if CLKOFREQ<4:0> = 00000
/ 2 * CLKOFREQ, for CLKOFREQ<4:0> ≠ 00000
W = Writable bit
‘1’ = Bit is set
R/W-1
CLKOFREQ<4:0>
f
c
= 427 kHz (default)
R/W-1
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
R/W-1
MRF89XA
x = Bit is unknown
—
r
DS70622B-page 53
—
r
bit 0