si4430 Silicon Laboratories, si4430 Datasheet - Page 140

• Manufacturer Part Number: si4430
• Description: Si4430 Ism Transceiver
• Manufacturer: Silicon Laboratories

Register 6Dh. TX Power
Register 6Eh. TX Data Rate 1
Si4430
Reset value = xxxx1000
Reset value = 00001010
The data rate can be calculated as: TX_DR = 10
The data rate can be calculated as: TX_DR = 10
140
Name
Name
Type
Type
Bit
Bit
7:4
2:0
7:0
Bit
Bit
3
txpow[2:0]
Reserved
txdr[15:8]
lna_sw
Name
Name
D7
D7
Reserved.
LNA Switch Controller.
If set, lna_sw control from the digital will go high during TX modes, and low during other
times. If reset, the digital control signal is low at all times.
TX Output Power.
The output power is configurable from –8 dBm to +13 dBm in ~3 dBm steps.
txpow[2:0] = 111 corresponds to +13 dBm and 000 to –8 dBm.
Data Rate Upper Byte.
See formula above.
D6
D6
Reserved
R
D5
D5
Preliminary Rev. 0.4
3
3
x txdr[15:0] / 2
x txdr[15:0] / 2
D4
D4
txdr[15:8]
R/W
Function
Function
16
21
lna_sw
R/W
D3
D3
[kbps] (if address 70[5] = 0) or
[kbps] (if address 70[5] = 1)
D2
D2
txpow[2:0]
R/W
D1
D1
D0
D0