Specifications

Page 64
WT1231H
ADVANCED COMMUNICATIONS & SENSING DATASHEET
RegBitrateLsb
(0x04)
7-0 BitRate(7:0) rw 0x0b LSB of Bit Rate (Chip Rate if Manchester encoding is
enabled)
BitRate =
--------
F
----
X
----
O
-----
S
---
C
----------
BitRate(15,0)
Default value: 4.8 kb/s
7-6 - r 00 unused
RegFdevMsb
(0x05)
5-0 Fdev(13:8) rw 000000 MSB of the frequency deviation
RegFdevLsb
(0x06)
7-0 Fdev(7:0) rw 0x52 LSB of the frequency deviation
Fdev = Fstep
⋅ Fdev(15,0)
Default value: 5 kHz
RegFrfMsb
(0x07)
7-0 Frf(23:16) rw 0xe4 MSB of the RF carrier frequency
RegFrfMid
(0x08)
7-0 Frf(15:8) rw 0xc0 Middle byte of the RF carrier frequency
RegFrfLsb
(0x09)
7-0 Frf(7:0) rw 0x00 LSB of the RF carrier frequency
Frf = Fstep
⋅ Frf 23;0 
Default value: Frf = 915 MHz (32 MHz XO)
7 RcCalStart w 0 Triggers the calibration of the RC oscillator when set.
Always reads 0. RC calibration must be triggered in
Standby mode.
6 RcCalDone r 1 0 → RC calibration in progress
1 → RC calibration is over
RegOsc1
(0x0A)
5-0 - r 000001 unused
7-6 - r 00 unused
5 AfcLowBetaOn rw 0 Improved AFC routine for signals with modulation index
lower than 2. Refer to section 3.4.16 for details
0 → Standard AFC routine
1 → Improved AFC routine
RegAfcCtrl
(0x0B)
4-0 - r 00000 unused
Reserved0C
(0x0C)
7-0 - r 0x02 unused