SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 112

• Manufacturer Part Number: SI4431-A0-FM
• Description: IC TXRX ISM 930MHZ 3.6V 20-QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4431-A0-FM

• Package / Case: 20-QFN
• Mfg Application Notes: Transitioning SI4430/31 to Rev B
• Frequency: 240MHz ~ 930MHz
• Data Rate - Maximum: 128kbps
• Modulation Or Protocol: FSK, GFSK, OOK
• Power - Output: 13dBm
• Sensitivity: -118dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 18.5mA
• Current - Transmitting: 28mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Number Of Receivers: 2
• Number Of Transmitters: 1
• Wireless Frequency: 240 MHz to 930 MHz
• Output Power: 13 dBm
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 28 mA
• Minimum Operating Temperature: - 40 C
• Modulation: FSK, GFSK, OOK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1633-5

Register 29h. Antenna Diversity 2
Register 2Ah. AFC Limiter
Register 2Bh. AFC Correction (LSBs)
Si4431
Reset value = 00000000
Reset value = 00101010
For the following registers (addresses 2Bh and 2Ch), use the following equation:
where Rb's unit is in kHz and “enmanch” is the Manchester Enable bit (found at address 71h bit [1]).
Therefore, the minimal data rate that this register can support without Manchester is 0.366 kbps.
Reset value = 00101011
112
Name
Name
Name
Type
Type
Type
Bit
Bit
Bit
7:0
7:0
7:0
Bit
Bit
Bit
afc_corr[9:2]
adrssi2[7:0]
Afclim[7:0]
Name
Name
Name
D7
D7
D7
Measured RSSI Value on Antenna 2.
AFC Limiter.
AFC limiter value.
AFC Correction Values.
AFC loop correction values [9:2] (MSBs only). Values are updated once, after sync word
is found during receiving. See also address 2Ch.
D6
D6
D6
ook
D5
D5
D5
_
cnt
Preliminary Rev. 0.4
_
val
D4
D4
D4

afc_corr[9:2]
adrssi2[7:0]
R
Afclim[7:0]
b
R/W
3

R
R

(
enmanch
500[kHz]
Function
Function
Function
D3
D3
D3

) 1
D2
D2
D2
D1
D1
D1
D0
D0
D0