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SX1231
WIRELESS & SENSING PRODUCTS
6.6. Packet Engine Registers
Table 27 Packet Engine Registers
DATASHEET
Name
(Address)
Bits Variable Name
Mode
Default
Value
Description
RegPreambleMsb
(0x2c)
RegPreambleLsb
(0x2d)
RegSyncConfig
(0x2e)
7-0
7-0
7
6
PreambleSize(15:8)
PreambleSize(7:0)
SyncOn
FifoFillCondition
rw
rw
rw
rw
0x00
0x03
1
0
Size of the preamble to be sent (from TxStartCondition
fulfilled). (MSB byte)
Size of the preamble to be sent (from TxStartCondition
fulfilled). (LSB byte)
Enables the Sync word generation and detection:
0 ? Off
1 ? On
FIFO filling condition:
0 ? if SyncAddress interrupt occurs
1 ? as long as FifoFillCondition is set
5-3
SyncSize
rw
011
Size of the Sync word:
( SyncSize + 1) bytes
2-0
SyncTol
rw
000
Number of tolerated bit errors in Sync word
RegSyncValue1
(0x2f)
RegSyncValue2
(0x30)
RegSyncValue3
(0x31)
RegSyncValue4
(0x32)
RegSyncValue5
(0x33)
RegSyncValue6
(0x34)
RegSyncValue7
(0x35)
RegSyncValue8
(0x36)
7-0
7-0
7-0
7-0
7-0
7-0
7-0
7-0
SyncValue(63:56)
SyncValue(55:48)
SyncValue(47:40)
SyncValue(39:32)
SyncValue(31:24)
SyncValue(23:16)
SyncValue(15:8)
SyncValue(7:0)
rw
rw
rw
rw
rw
rw
rw
rw
0x01
*
0x01
*
0x01
*
0x01
*
0x01
*
0x01
*
0x01
*
0x01
*
1 st byte of Sync word. (MSB byte)
Used if SyncOn is set.
2 nd byte of Sync word
Used if SyncOn is set and (SyncSize +1) >= 2.
3 rd byte of Sync word.
Used if SyncOn is set and (SyncSize +1) >= 3.
4 th byte of Sync word.
Used if SyncOn is set and (SyncSize +1) >= 4.
5 th byte of Sync word.
Used if SyncOn is set and (SyncSize +1) >= 5.
6 th byte of Sync word.
Used if SyncOn is set and (SyncSize +1) >= 6.
7 th byte of Sync word.
Used if SyncOn is set and (SyncSize +1) >= 7.
8 th byte of Sync word.
Used if SyncOn is set and (SyncSize +1) = 8.
Rev. 7 - June 2013
Page 73
www.semtech.com
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