SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 118

• 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 33h. Header Control 2
Si4431
Reset value = 00100010
118
Name
Type
Bit
6:4
2:1
Bit
7
3
0
synclen[1:0]
Reserved
hdlen[2:0]
prealen[8]
Reserved
fixpklen
Name
D7
R
Reserved.
Header Length.
Length of header used if packet handler is enabled for TX/RX (enpactx/rx). Headers are
transmitted/received in descending order.
000:
001:
010:
011:
100:
Fix Packet Length.
When fixpklen = 1 the packet length (pklen[7:0]) is not included in the header. When fixp-
klen = 0 the packet length is included in the header.
Synchronization Word Length.
The value in this register corresponds to the number of bytes used in the Synchronization
Word. The synchronization word bytes are transmitted in descending order.
00:
01:
10:
11:
MSB of Preamble Length.
See register Preamble Length.
D6
hdlen[2:0]
R/W
D5
No TX/RX header
Header 3
Header 3 and 2
Header 3 and 2 and 1
Header 3 and 2 and 1 and 0
Synchronization Word 3
Synchronization Word 3 and 2
Synchronization Word 3 and 2 and 1
Synchronization Word 3 and 2 and 1 and 0
Preliminary Rev. 0.4
D4
fixpklen
Function
R/W
D3
D2
synclen[1:0]
R/W
D1
prealen[8]
R/W
D0