SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 145

• 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 6Bh. GFSK FIR Filter Coefficient Address
Register 6Ch. GFSK FIR Filter Coefficient Value
Reset value = xxxxx000
Reset value = xxxxx000
Name
Name
Type
Type
Bit
Bit
7:3
2:0
7:6
5:0
Bit
Bit
firadd[2:0]
Reserved
Reserved
firval[5:0]
Name
Name
D7
D7
Reserved
R/W
Reserved.
GFSK FIR Filter Coefficient Look-up Table Address.
The address for Gaussian filter coefficients used in the TX path. The default GFSK set-
ting is for BT = 0.5. It is not needed to change or load the GFSK Coefficients if BT = 0.5 is
satisfactory for the system.
000:
001:
010:
011:
100:
101:
110:
Reserved.
FIR Coefficient Value in the lOok-up Table Addressed by the firadd[2:0].
The default coefficient can be read or modified.
D6
D6
i_coe0 (Default = d1)
i_coe1 (Default = d3)
i_coe2 (Default = d6)
i_coe3 (Default = d10)
i_coe4 (Default = d15)
i_coe5 (Default = d19)
i_coe6 (Default = d20)
Reserved
D5
D5
R
Preliminary Rev. 0.4
D4
D4
Function
Function
D3
D3
firval[5:0]
R/W
D2
D2
firadd[2:0]
R/W
D1
D1
Si4431
D0
D0
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