SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 122

• 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 3Ch. Transmit Header 1
Register 3Dh. Transmit Header 0
Register 3Eh. Packet Length
Si4431
Reset value = 00000000
Reset value = 00000000
Reset value = 00000000
Check Header bytes 3 to 0 are checked against the corresponding bytes in the Received Header if the check is
enabled in “Register 31h. EZMAC
122
Name
Name
Name
Type
Type
Type
Bit
Bit
Bit
7:0
7:0
7:0
Bit
Bit
Bit
txhd[15:8]
pklen[7:0]
txhd[7:0]
Name
Name
Name
D7
D7
D7
Transmit Header 1.
2
Transmit Header 0.
1
Packet Length.
The value in the pklen[7:0] register corresponds directly to the number of bytes in the
Packet. For example pklen[7:0] = ‘00001000’ corresponds to a packet length of 8 bytes.
The maximum packet length is pklen[7:0] = ‘11111111’, a 255 byte packet. Writing 0 is
possible, in this case we do not send any data in the packet. During RX, if fixpklen = 1,
this will specify also the Packet Length for RX mode.
nd
st
D6
D6
D6
byte of the header to be transmitted.
byte of the header to be transmitted.
®
Status,” on page 116.
D5
D5
D5
Preliminary Rev. 0.4
D4
D4
D4
txhd[15:8]
pklen[7:0]
txhd[7:0]
R/W
R/W
R/W
Function
Function
Function
D3
D3
D3
D2
D2
D2
D1
D1
D1
D0
D0
D0