MRF89XAM8A-I Datasheet, PDF (31/140 Pages) Microchip Technology – Ultra Low-Power, Integrated ISM Band Sub-GHz Transceiver

MRF89XA
2.14.2
DATA AND MODULATION
CONFIGURATION REGISTER
DETAILS
REGISTER 2-2: DMODREG: DATA AND MODULATION CONFIGURATION REGISTER
(ADDRESS:0X01) (POR:0X88)
R/W-1
R/W-0
R/W-0
R/W-0
R/W-1
R/W-0
R/W-0
R/W-0
MODSEL<1:0>
DMODE0
OOKTYP<1:0>
DMODE1
IFGAIN<1:0>
bit 7
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 7-6
MODSEL<1:0>: Modulation Type Selection bits
These bits set the type of modulation to be used in Sub-GHz range.
11 = Reserved
10 = FSK (default)
01 = OOK
00 = Reserved
bit 5
DMODE0: Data Mode 0 bit⁽¹⁾
Setting this bit selects the data operational mode as LSB. Use this bit with DMODE1 to select the
operational mode.
0 = Default
bit 4-3
OOKTYP<1:0>: OOK Demodulator Threshold Type bits
The combination of these bits selects the Demodulator Threshold Type for operation.
11 = Reserved
10 = Average Mode
01 = Peak Mode (default)
00 = Fixed threshold mode
bit 2
DMODE1: Data Mode 1 bit⁽¹⁾
Setting this bit selects the data operational mode as MSB. Use this bit with DMODE0 to select the
operational mode.
0 = Default
bit 1-0
IFGAIN<1:0>: IF Gain bits.
Selects gain on the IF chain.
11 = -13.5 dB
10 = -9 dB
01 = -4.5 dB
00 = 0 dB (maximal gain) (default)
Note 1: The combination of DMODE1:DMODE0 selects the Data Operation mode. See Table 2-7 for the available
Data Operation mode settings.
TABLE 2-7: DATA OPERATION MODE
SETTINGS
Data Operation
Mode
DMODE1
DMODE0
Continuous
(default mode)
Buffer
Packet
0
0
0
1
1
x (x = 0/1)
© 2010–2011 Microchip Technology Inc.
Preliminary
DS70622C-page 31