Registers
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SW_CONF (0x6194) – Sync Word Configuration
Bit
Name Reset R/W Description
No.
7
DUAL_RX
0 R/W 0: Only search for primary SW
1: Search for both primary and secondary SW
6 – 0 R/W Reserved. Always write 0.
5
SW_RX
0 R 0: Primary SW received
1: Secondary SW received
Valid only when RFSTAT.SFD is 1
4:0
SW_LEN[4:0]
0 0000 R/W
Determines how many of the bits in SYNC_WORD are to be used. This
allows for arbitrary sync word lengths.
0 0000: 32-bit SW
0 0001 to 0 11111: Reserved
1 0000: 16-bit SW
1 0001: 17-bit SW
1 0010: 18-bit SW
1 0011: 19-bit SW
…
1 1111: 31-bit SW
SW0 (0x6195) – Primary Sync Word Byte 0
Bit
Name Reset R/W Description
No.
7:0
SYNC_WORD[7:0]
0x00 R/W Contains bits 7:0 of the primary synchronization word
SW1 (0x6196) – Primary Sync Word Byte 1
Bit
Name Reset R/W Description
No.
7:0
SYNC_WORD[15:8]
0x00 R/W Contains bits 15:8 of the primary synchronization word
SW2 (0x6197) – Primary Sync Word Byte 2
Bit
Name Reset R/W Description
No.
7:0
SYNC_WORD[23:16]
0x00 R/W Contains bits 23:16 of the primary synchronization word
SW3 (0x6198) – Primary Sync Word Byte 3
Bit
Name Reset R/W Description
No.
7:0
SYNC_WORD[31:24]
0x00 R/W Contains bits 31:24 of the primary synchronization word
SW4 (0x61F8) – Secondary Sync Word Byte 0
Bit
Name Reset R/W Description
No.
7:0
SYNC_WORD2[7:0]
0x00 R/W Contains bits 7:0 of the secondary synchronization word
SW5 (0x61F9) – Secondary Sync Word Byte 1
Bit
Name Reset R/W Description
No.
7:0
SYNC_WORD2[15:8]
0x00 R/W Contains bits 15:8 of the secondary synchronization word
SW6 (0x61FA) – Secondary Sync Word Byte 2
Bit
Name Reset R/W Description
No.
7:0
SYNC_WORD2[23:16]
0x00 R/W Contains bits 23:16 of the secondary synchronization word
342
CC2541 Proprietary Mode Radio SWRU191C– April 2009–Revised January 2012
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