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SX1231
WIRELESS & SENSING PRODUCTS
DATASHEET
RegPacketConfig1
(0x37)
7
6-5
PacketFormat
DcFree
rw
rw
0
00
Defines the packet format used:
0 ? Fixed length
1 ? Variable length
Defines DC-free encoding/decoding performed:
00 ? None (Off)
01 ? Manchester
10 ? Whitening
11 ? reserved
4
CrcOn
rw
1
Enables CRC calculation/check (Tx/Rx):
0 ? Off
1 ? On
3
CrcAutoClearOff
rw
0
Defines the behavior of the packet handler when CRC
check fails:
0 ? Clear FIFO and restart new packet reception. No
PayloadReady interrupt issued.
1 ? Do not clear FIFO. PayloadReady interrupt issued.
2-1
AddressFiltering
rw
00
Defines address based filtering in Rx:
00 ? None (Off)
01 ? Address field must match NodeAddress
10 ? Address field must match NodeAddress or
BroadcastAddress
11 ? reserved
0
-
rw
0
unused
RegPayloadLength
(0x38)
RegNodeAdrs
7-0
7-0
PayloadLength
NodeAddress
rw
rw
0x40
0x00
If PacketFormat = 0 (fixed), payload length.
If PacketFormat = 1 (variable), max length in Rx, not used
in Tx.
Node address used in address filtering.
(0x39)
RegBroadcastAdrs
7-0
BroadcastAddress
rw
0x00
Broadcast address used in address filtering.
(0x3A)
RegAutoModes
(0x3B)
7-5
EnterCondition
rw
000
Interrupt condition for entering the intermediate mode:
000 ? None (AutoModes Off)
001 ? Rising edge of FifoNotEmpty
010 ? Rising edge of FifoLevel
011 ? Rising edge of CrcOk
100 ? Rising edge of PayloadReady
101 ? Rising edge of SyncAddress
110 ? Rising edge of PacketSent
111 ? Falling edge of FifoNotEmpty (i.e. FIFO empty)
4-2
ExitCondition
rw
000
Interrupt condition for exiting the intermediate mode:
000 ? None (AutoModes Off)
001 ? Falling edge of FifoNotEmpty (i.e. FIFO empty)
010 ? Rising edge of FifoLevel or Timeout
011 ? Rising edge of CrcOk or Timeout
100 ? Rising edge of PayloadReady or Timeout
101 ? Rising edge of SyncAddress or Timeout
110 ? Rising edge of PacketSent
111 ? Rising edge of Timeout
1-0
IntermediateMode
rw
00
Intermediate mode:
00 ? Sleep mode (SLEEP)
01 ? Standby mode (STDBY)
10 ? Receiver mode (RX)
11 ? Transmitter mode (TX)
Rev. 7 - June 2013
Page 74
www.semtech.com
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