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CC2400_08 Datasheet, PDF (30/84 Pages) Texas Instruments – 2.4 GHz Low-Power RF Transceiver | |||
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CC2400
FIFO. When all data is read, the next two
bytes in the FIFO are the CRC.
If the reception of the packet is error free,
the PKTSTATUS.CRC_OK flag is set (also
available on the GIO1 and GIO6 pins).
The CRC polynomial is:
x16 + x15 + x2 + 1
Packet field
Use
Length
GRMDM register
configuration bits
Preamble
Mandatory
⥠1 byte
PRE_BYTES[2:0]
Synchronisation word
Mandatory
1, 2, 3 or 4 bytes
SYNC_WORD_SIZE[1:0]
Table 16. Data packet format
Data field
Mandatory
⥠1 byte
CRC
Optional
2 bytes
CRC_ON
Preamble bits
(1010...1010)
Optional 8/10 coding
Optional CRC-16 calculation
Data f ield
Legend:
Inserted automatically in TX,
processed and remov ed in RX.
Unprocessed user data
32 bits
16/32 bits
8 x n bits
16 bits
Figure 11. Packet format details (with recommended lengths of preamble and
synchronization word)
SWRS042A
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