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06 December 2016
Bluetooth SIG Proprietary
BLUETOOTH SPECIFICATION Version 5.0 | Vol 0, Part A page 17
6 Packets .............................................................................................401
6.1 General Format ....................................................................... 401
6.1.1 Basic Rate................................................................... 401
6.1.2 Enhanced Data Rate................................................... 401
6.2 Bit Ordering ............................................................................. 402
6.3 Access Code ........................................................................... 402
6.3.1 Access Code Types .................................................... 403
6.3.2 Preamble..................................................................... 403
6.3.3 Sync Word .................................................................. 403
6.3.4 Trailer.......................................................................... 407
6.4 Packet Header......................................................................... 407
6.4.1 LT_ADDR.................................................................... 408
6.4.2 TYPE........................................................................... 408
6.4.3 FLOW.......................................................................... 408
6.4.4 ARQN.......................................................................... 409
6.4.5 SEQN.......................................................................... 409
6.4.6 HEC ............................................................................ 409
6.5 Packet Types ........................................................................... 410
6.5.1 Common Packet Types............................................... 412
6.5.2 SCO Packets .............................................................. 415
6.5.3 eSCO Packets ............................................................416
6.5.4 ACL Packets ............................................................... 417
6.6 Payload Format ....................................................................... 420
6.6.1 Synchronous Data Field.............................................. 420
6.6.2 Asynchronous Data Field............................................ 421
6.7 Packet Summary ..................................................................... 425
7 Bit stream Processing.....................................................................428
7.1 Error Checking......................................................................... 429
7.1.1 HEC Generation.......................................................... 429
7.1.2 CRC Generation ......................................................... 430
7.2 Data Whitening ........................................................................ 431
7.3 Error Correction ....................................................................... 432
7.4 FEC Code: Rate 1/3 ................................................................ 433
7.5 FEC Code: Rate 2/3 ................................................................ 433
7.6 ARQ Scheme........................................................................... 434
7.6.1 Unnumbered ARQ....................................................... 434
7.6.2 Retransmit Filtering..................................................... 438
7.6.3 Flushing Payloads....................................................... 440
7.6.4 Multi-slave Considerations.......................................... 441