Specification
of the Bluetooth
System
Wireless connections made easy
Volume 04
Revision 1.2 or later
Issued: 01 January 2006
Including:
A: UART v1.1
B: SD v1.1
C: USB v1.0
D: 3-wire v0.95
Specification Volume 4
Host Controller
Interface
[Transport Layer]
Version 1.2 or later 01 January 2006
BLUETOOTH SPECIFICATION [vol 4] page 2 of 76
Revision History
Contributors
Rev Date Comments
D05R00 May 13 2004 First revision of this volume with informational content.
D10R00 28 July 2005 Second draft ready for review.
D10R02 11 October 2005 Second draft ready for review.
V10r00 01 January 2006 Approved, Board of Directors
Toru Aihara IBM Corporation
Edgar Kerstan IBM Corporation
Nathan Lee IBM Corporation
Kris Fleming Intel Corporation
Robert Hunter Intel Corporation
Patrick Kane Motorola, Inc.
Uwe Gondrum Nokia Corporation
Thomas Müller Nokia Corporation
Christian Zechlin Nokia Corporation
Johannes Elg Telefonaktiebolaget LM Ericsson
Sven Jerlhagen Telefonaktiebolaget LM Ericsson
Christian Johansson Telefonaktiebolaget LM Ericsson
Patrik Lundin Telefonaktiebolaget LM Ericsson
Lars Novak Telefonaktiebolaget LM Ericsson
Masahiro Tada Toshiba Corporation
Steve Ross Digianswer A/S
Chatschik Bisdikian IBM Corporation
Les Cline Intel Corporation
Brad Hosler Intel Corporation
John Howard Intel Corporation
Srikanth Kambhatla Intel Corporation
Kosta Koeman Intel Corporation
John McGrath Intel Corporation
Patrik Lundin Telefonaktiebolaget LM Ericsson
Leonard Ott Socket Communications
Rebecca O’Dell Signia Technologies
Tsuyoshi Okada Matsushita Electric
Robin Heydon CSR
01 January 2006 Version 1.2 or later
BLUETOOTH SPECIFICATION [vol 4] page 3 of 76
Web Site
This specification can also be found on the official Bluetooth website: http://
www.bluetooth.org
DISCLAIMER AND COPYRIGHT NOTICE
The copyright in this specification is owned by the Promoter Members of Blue-
tooth® Special Interest Group (SIG), Inc. ("Bluetooth SIG"). Use of these speci-
fications and any related intellectual property (collectively, the "Specification"), is
governed by the Promoters Membership Agreement among the Promoter Mem-
bers and Bluetooth SIG (the "Promoters Agreement"), certain membership
agreements between Bluetooth SIG and its Adopter and Associate Members
(the "Membership Agreements") and the Bluetooth Specification Early Adopters
Agreements (1.2 Early Adopters Agreements) among Early Adopter members
of the unincorporated Bluetooth SIG and the Promoter Members (the "Early
Adopters Agreement"). Certain rights and obligations of the Promoter Members
under the Early Adopters Agreements have been assigned to Bluetooth SIG by
the Promoter Members.
Use of the Specification by anyone who is not a member of Bluetooth SIG or a
party to an Early Adopters Agreement (each such person or party, a "Member"),
is prohibited. The legal rights and obligations of each Member are governed by
their applicable Membership Agreement, Early Adopters Agreement or Promot-
ers Agreement. No license, express or implied, by estoppel or otherwise, to any
intellectual property rights are granted herein.
Any use of the Specification not in compliance with the terms of the applicable
Membership Agreement, Early Adopters Agreement or Promoters Agreement is
prohibited and any such prohibited use may result in termination of the applica-
ble Membership Agreement or Early Adopters Agreement and other liability per-
mitted by the applicable agreement or by applicable law to Bluetooth SIG or any
of its members for patent, copyright and/or trademark infringement.
THE SPECIFICATION IS PROVIDED "AS IS" WITH NO WARRANTIES WHAT-
SOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NONIN-
FRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE,
SATISFACTORY QUALITY, OR REASONABLE SKILL OR CARE, OR ANY
WARRANTY ARISING OUT OF ANY COURSE OF DEALING, USAGE, TRADE
PRACTICE, PROPOSAL, SPECIFICATION OR SAMPLE.
Each Member hereby acknowledges that products equipped with the Bluetooth
technology ("Bluetooth products") may be subject to various regulatory controls
under the laws and regulations of various governments worldwide. Such laws
Version 1.2 or later 01 January 2006
BLUETOOTH SPECIFICATION [vol 4] page 4 of 76
and regulatory controls may govern, among other things, the combination,
operation, use, implementation and distribution of Bluetooth products. Exam-
ples of such laws and regulatory controls include, but are not limited to, airline
regulatory controls, telecommunications regulations, technology transfer con-
trols and health and safety regulations. Each Member is solely responsible for
the compliance by their Bluetooth Products with any such laws and regulations
and for obtaining any and all required authorizations, permits, or licenses for
their Bluetooth products related to such regulations within the applicable juris-
dictions. Each Member acknowledges that nothing in the Specification pro-
vides any information or assistance in connection with securing such
compliance, authorizations or licenses. NOTHING IN THE SPECIFICATION
CREATES ANY WARRANTIES, EITHER EXPRESS OR IMPLIED, REGARD-
ING SUCH LAWS OR REGULATIONS.
ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY INTEL-
LECTUAL PROPERTY RIGHTS OR FOR NONCOMPLIANCE WITH LAWS,
RELATING TO USE OF THE SPECIFICATION IS EXPRESSLY DISCLAIMED.
BY USE OF THE SPECIFICATION, EACH MEMBER EXPRESSLY WAIVES
ANY CLAIM AGAINST BLUETOOTH SIG AND ITS PROMOTER MEMBERS
RELATED TO USE OF THE SPECIFICATION.
Bluetooth SIG reserve the right to adopt any changes or alterations to the Spec-
ification as it deems necessary or appropriate.
Copyright © 2001, 2002, 2003, 2004, 2005, 2006. Bluetooth SIG Inc. All copy-
rights in the Bluetooth Specifications themselves are owned by Agere Systems
Inc., Ericsson Technology Licensing AB, IBM Corporation, Intel Corporation,
Microsoft Corporation, Motorola, Inc., Nokia Mobile Phones and Toshiba Cor-
poration.
*Other third-party brands and names are the property of their respective own-
ers.
01 January 2006 Version 1.2 or later
BLUETOOTH SPECIFICATION [vol 4] page 7 of 76
TABLE OF CONTENTS
Part A
UART TRANSPORT LAYER
1 General ............................................................................................... 15
2 Protocol .............................................................................................. 16
3 RS232 Settings................................................................................... 17
4 Error Recovery................................................................................... 18
Part B
SECURE DIGITAL (SD)
TRANSPORT LAYER
1 Introduction........................................................................................ 23
2 Goals................................................................................................... 24
2.1 Hardware Goals......................................................................... 24
2.2 Software Goals.......................................................................... 24
3 Physical Interface Documents.......................................................... 25
4 Communication.................................................................................. 26
4.1 Overview.................................................................................... 26
5 Appendix A - Acronyms and Abbreviations.................................... 27
6 Appendix B - Related Documents.................................................... 28
7 Appendix C - Tests............................................................................. 29
7.1 Test Suite Structure ................................................................... 29
Part C
USB TRANSPORT LAYER
1 Overview............................................................................................. 34
2 USB Endpoint Expectations ............................................................. 36
2.1 Descriptor Overview .................................................................. 36
2.2 Control Endpoint Expectations .................................................. 41
2.3 Bulk Endpoints Expectations ..................................................... 41
2.4 Interrupt Endpoint Expectations ................................................ 42
2.5 Isochronous Endpoints Expectations......................................... 42
3 Class Code ......................................................................................... 43
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