Holtek BC68F2130 Manual page 102

• RF_OPER Register – RF Operation Control Register
Bit 7
Name —
R/W —
POR —
Bit 7~6 Unimplemented, read as "0"
Bit 5 FSK_EN: RF output modulation mode selection
0: OOK Mode, PAD enable is controlled by TXD directly
1: FSK Mode, PAD enable is forced to 1 and TXD modulates the TX frequency
Bit 4 DIR_EN: RF output operating mode selection
0: Burst Mode, TX data is read from FIFO, RF is controlled by state machine (if
1: Direct Mode, TX data comes from DTXD bit in the RF_FIFO_CTRL4 register
Bit 3~1 Unimplemented, read as "0"
Bit 0 TX_STROBE: TX strobe to start the burst mode data transfer from RF
0: TX packet has been sent completely
1: Initial a TX transmission
Setting this bit high will initial the TX transmission procedure automatically, in which
condition, all register settings are not allowed to change. This bit will be cleared to
0 automatically when a TX packet has been sent completely, in which condition, a
BMTCF interrupt request will be generated. Users should start the next transmission
after this bit returns to 0. Users can force the TX transmission to teminate by writting a
0 value to this bit.
• RF_MOD1 Register – RF Modulator Control Register 1
Bit 7
Name FDEV7
R/W R/W
POR 1
FDEV7~FDEV0: Set the frequency deviation in FSK mode
Bit 7~0
These bits together with the FDEV10~FDEV9 bits in the RF_MOD2 register set the
frequency deviation in FSK mode.
• RF_MOD2 Register – RF Modulator Control Register 2
Bit 7
Name —
R/W —
POR —
Bit 7~3 Unimplemented, read as "0"
Bit 2~0 FDEV10~FDEV8: Set the frequency deviation in FSK mode
These bits together with the FDEV7~FDEV0 bits in the RF_MOD1 register set the
frequency deviation in FSK mode.
FDEV[10:0]=DEC2HEX (INT((2
For example, if f
Rev. 1.50
BC68F2130/BC68F2140/BC68F2150
Sub-1GHz RF Transmitter Flash MCU with OCDS
6 5 4
— FSK_EN DIR_EN
— R/W R/W
— 0 0
FIFO transmission is complete, RF TX will enter the standby mode)
directly and RF state is controlled by SX_EN (first enable) and TX_EN (second
enable)
6 5
FDEV6 FDEV5 FDEV4
R/W R/W R/W
0 0
6 5
— —
— —
— —
17
=16MHz, XODIV2=0, f
XTAL
102
3 2 1
— — —
— — —
— — —
4 3 2
FDEV3 FDEV2
R/W R/W
1 0 0
4 3 2
— — FDEV10
— — R/W
— — 0
-1)/f )×f )
XTAL D
=50kHz, then FDEV[10:0]=19BH.
D
0
TX_STROBE
R/W
0
1 0
FDEV1 FDEV0
R/W R/W
0 0
1 0
FDEV9 FDEV8
R/W R/W
0 1
January, 22, 2021