mrf89xa Microchip Technology Inc., mrf89xa Datasheet - Page 52

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

2.18
2.18.1
REGISTER 2-27:
DS70622B-page 52
MRF89XA
bit 7
R = Readable bit
-n = Value at POR
r = Reserved
bit 7-4
bit 3-1
bit 0
Note:
R/W-0
Transmitter Configuration
Registers
TRANSMIT PARAMTER
CONFIGURATION REGISTER
DETAILS
BR is the bit rate (refer to BRSREG (Register 2-4) for more information).
TXIPOLFV<3:0>: Transmission Interpolation Filter Cut Off Frequency Value bits
These bits control the cut off frequency of the interpolation filter in the transmission path.
TXIPOLFV<3:0> = 0111
f
Where,
TXIPOLFV is the value in the register
f
f
f
TXOPVAL<2:0>: Transmit Output Power Value bits
111 = 13 dBm
110 = 10 dBm (default)
101 = 7 dBm
100 = 4 dBm
011 = 1 dBm
010 = -2 dBm
001 = -5 dBm
000 = -8 dBm
Reserved: Reserved bit; do not use
0 = Reserved (default)
c
c
o
xtal
= 200 kHz *(f
is the center frequency
is the local oscillator frequency
R/W-1
is the crystal oscillator frequency
TXIPOLFV<3:0>
TXCONREG: TRANSMIT PARAMETER CONFIGURATION REGISTER
(ADDRESS:0x1A) (POR:0x7C)
W = Writable bit
‘1’ = Bit is set
xtal
R/W-1
MHz/12.8 MHz) * (TXIPOLFV)/8
f
c
= 200 kHz (default)
R/W-1
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
TXOPVAL<2:0>
R/W-1
© 2010 Microchip Technology Inc.
x = Bit is unknown
R/W-0
—
r
bit 0