SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 116

• 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 31h. EZMAC
Si4431
Reset value = 00000000
116
Name
Type
Bit
Bit
7
6
5
4
3
2
1
0
Reserved
Reserved
crcerror
pkvalid
pksrch
pksent
Name
rxcrc1
D7
R
pkrx
pktx
®
Status
Reserved.
If high, it indicates the last CRC received is all one’s.
May indicated Transmitter underflow in case of CRC error.
Packet Searching .
When pksrch = 1 the radio is searching for a valid packet.
Packet Receiving.
When pkrx = 1 the radio is currently receiving a valid packet.
Valid Packet Received.
When a pkvalid = 1 a valid packet has been received by the receiver. (Same bit as in reg-
ister 03, but reading it does not reset the IRQ)
CRC Error.
When crcerror = 1 a Cyclic Redundancy Check error has been detected. (Same bit as in
register 03, but reading it does not reset the IRQ)
Packet Transmitting.
When pktx = 1 the radio is currently transmitting a packet.
Packet Sent.
A pksent = 1 a packet has been sent by the radio. (Same bit as in register 03, but reading
it does not reset the IRQ)
rxcrc1
D6
R
pksrch
D5
R
Preliminary Rev. 0.4
pkrx
D4
R
Function
pkvalid
D3
R
crcerror
D2
R
pktx
D1
R
pksent
D0
R