Realtek Semiconductor RTL8821AU 802.11a/b/g/n/ac RTL8821AU Combo module User Manual RTL8821AU rev01

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RTL8821AU
Combo module User’s Manual
Rev.0.1
20 December 2013
Realtek Semiconductor Corp.
No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
Tel.: +886-3-578-0211. Fax: +886-3-577-6047
www.realtek.com.tw
RTL8821AU Combo module User Manual
COPYRIGHT
©2012 Realtek Semiconductor Corp. All rights reserved. No part of this document may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means without the written permission of Realtek Semiconductor Corp.
DISCLAIMER
Realtek provides this document ‘as is’, without warranty of any kind. Realtek may make improvements
and/or changes in this document or in the product described in this document at any time. This document
could include technical inaccuracies or typographical errors.
TRADEMARKS
Realtek is a trademark of Realtek Semiconductor Corporation. Other names mentioned in this document are
trademarks/registered trademarks of their respective owners.
USING THIS DOCUMENT
This document is intended for the software engineer’s reference and provides detailed programming
information.
Though every effort has been made to ensure that this document is current and accurate, more information
may have become available subsequent to the production of this guide.
REVISION HISTORY
Revision
0.1
Release Date
2013/12/20
Summary
Preliminary release.
ii
RTL8821AU Combo module User Manual
Table of Contents
1.
GENERAL DESCRIPTION ......................................................................................................................................... 1
2.
PRODUCT SPECIFICATIONS ................................................................................................................................... 3
2.1. ENVIRONMENTAL ..................................................................................................................................................... 3
2.1.1.
Operating ........................................................................................................................................................ 3
2.1.2.
Storage ............................................................................................................................................................ 3
2.2. FUNCTIONAL SPECIFICATIONS ................................................................................................................................... 3
2.3. WARNING ................................................................................................................................................................ 5
3.5.1 Federal Communication Commission Interference Statement ................................................................................. 5
3.5.2 Industry Canada Statement ................................................................................................................................... 6
3.5.3 NCC 警語 ........................................................................................................................................................... 10
List of Tables
TABLE 2. FUNCTIONAL SPECIFICATIONS .................................................................................................................................. 3
iii
RTL8821AU Combo module User Manual
1.
General Description
The Realtek RTL8821AU is a highly integrated single-chip 802.11a/b/g/n/ac 1T1R USB2.0 WLAN
controller. It combines a WLAN MAC, a 1T1R capable WLAN baseband, BT Protocol Stack (LM, LL, and
LE), BT Baseband, modem, and WLAN/BT RF in a single chip. The RTL8821AU provides a complete
solution for a high throughput performance integrated wireless LAN and Bluetooth device.
The RTL8821AU WLAN baseband implements Orthogonal Frequency Division Multiplexing (OFDM) with
1 transmit and 1 receive path and is compatible with the 802.11ac specification. Features include one spatial
stream transmission, short guard interval (GI) of 400ns, spatial spreading, and transmission over 20MHz ,
40MHz and 80MHz channel bandwidth.
For legacy compatibility, Direct Sequence Spread Spectrum (DSSS), Complementary Code Keying (CCK)
and OFDM baseband processing are included to support all 802.11b and 802.11g data rates. Differential
phase shift keying modulation schemes, DBPSK and DQPSK with data scrambling capability, are available,
and CCK provides support for legacy data rates, with long or short preamble. The high-speed FFT/IFFT
paths, combined with BPSK, QPSK, 16QAM, 64QAM and 256-QAM modulation of the individual
subcarriers and rate compatible punctured convolutional coding with coding rate of 1/2, 2/3, 3/4, and 5/6,
provide up to 433.3Mbps for 802.11ac OFDM.
A RTL8821AU built-in enhanced signal detector, adaptive frequency domain equalizer, and a soft-decision
Viterbi decoder help to alleviate multi-path effects and mutual interference in the reception of multiple
streams. Robust interference detection and suppression are provided to protect against Bluetooth, cordless
phone, and microwave oven interference.
Efficient IQ-imbalance, DC offset, phase noise, frequency offset, and timing offset compensations are
provided for the radio frequency front-end. Selectable digital transmit and receive FIR filters are provided to
meet transmit spectrum mask requirements and to reject adjacent channel interference, respectively.
The RTL8821AU WLAN Controller supports fast receiver Automatic Gain Control (AGC) with
synchronous and asynchronous control loops among antennas, antenna diversity functions, and adaptive
transmit power control function to obtain better performance in the analog portions of the transceiver.
The RTL8821AU WLAN MAC supports 802.11e for multimedia applications, 802.11i for security, and
802.11n/802.11ac Draft 2.0 for enhanced MAC protocol efficiency. Using packet aggregation techniques
such as A-MPDU with BA and A-MSDU, protocol efficiency is significantly improved. Power saving
mechanisms such as Legacy Power Save, and U-APSD, reduce the power wasted during idle time, and
compensate for the extra power required to transmit OFDM. The RTL8821AU provides simple legacy and
20MHz/40MHz/80MHz co-existence mechanisms to ensure backward and network compatibility.
RTL8821AU Combo module User Manual
The RTL8821AU Bluetooth controller complies with Bluetooth core specification v4.0, and supports dual
mode (BR/EDR + AMP + Low Energy Controllers). It is compatible with previous versions, including v2.1
+ EDR and v3.0 + HS. For BR/EDR, it supports scatternet topology and allows four active links in slave
mode, and seven active links in master mode. For Low Energy, it supports multiple states and allows eight
active links in master mode. The links in BR/EDR and LE can be active simultaneously.
RTL8821AU Combo module User Manua
2. Product specifications
2.1. Environmental
2.1.1.
Operating
Operating Temperature:
Relative Humidity:
2.1.2.
-20 to 70 °C
5-90% (non-condensing)
Storage
Temperature:
Relevant Humidity:
-55 to 125 °C
5-95% (non-condensing)
2.2. Functional Specifications
Standards
Bus Interface
Form Factor
Data Rate
Media Access Control
Modulation Techniques
Table 1. Functional Specifications
WiFi:
IEEE 802.11a/b/g/n/e/i/h/k/r/draft-ac
BT:
V2.1+EDR/BT v3.0/BT v3.0+HS/BT v4.0
WiFi: USB BT: USB
USB module
802.11b:
11, 5.5, 2, 1 Mbps;
802.11g:
54, 48, 36, 24, 18, 12, 9, 6 Mbps
802.11n:
MCS 0 to 15 for HT20MHz;
MCS 0 to 15 for HT40MHz
802.11ac:
MCS 0 to 8 for HT20MHz;
MCS 0 to 9 for HT40MHz;
MCS 0 to 9 for HT80MHz
WiFi:
CSMA/CA with ACK
WiFi + BT:
AFH, Time Division
802.11b:
CCK, DQPSK, DBPSK
802.11a/g/n:
64 QAM, 16 QAM, QPSK, BPSK
802.11ac:
256QAM, 64 QAM, 16 QAM, QPSK, BPSK
BT:
Rev.1.0
RTL8821AU Combo module User Manua
Network Architecture
GFSK, π/4 DQPSK, 8DPSK
WiFi:
Ad-hoc mode (Peer-to-Peer )
Infrastructure mode
BT 2.4GHz:
Ch. 0 ~78
WiFi 2.4GHz:
11: (Ch. 1-11) – United States
13: (Ch. 1-13) – Europe
14: (Ch. 1-14) – Japan
WiFi 5GHz:
Operating Channel
20MHz band width :
Ch 36, 40, 44, 48,
Ch 52, 56, 60, 64,
Ch 100, 104, 108, 112, 116, 120, 124, 128,132,136, 140,
Ch 149,153, 157,161, 165.
40MHz band width :
Ch 38, 46,
Ch 54, 62,
Ch 102, 110, 118, 126, 134,
Ch 151, 159.
Frequency Range
Security
Operating Voltage
80MHz band width :
Ch 42
Ch 58
Ch 105, 122
Ch 155.
2.400GHz ~ 2.4835 GHz
5.1500GHz ~ 5.3500GHz
5.4700GHz ~ 5.7250GHz
5.7250GHz ~ 5.8500GHz
WiFi :
WPA, WPA-PSK, WPA2, WPA2-PSK, WEP 64bit & 128bit, IEEE
802.11x, IEEE 802.11i
BT:
Simple Paring
3.3 V ±9% I/O supply voltage
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RTL8821AU Combo module User Manua
2.3. Warning
3.5.1 Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.
IMPORTANT NOTE:
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This
equipment should be installed and operated with minimum distance 20cm between the radiator & your body.
Operations in the 5.15-5.25GHz band are restricted to indoor usage only.
IEEE 802.11abgn 2.4G operation of this product in the U.S.A. is firmware-limited to channels 1 through 11.
This device is intended only for OEM integrators under the following conditions:
1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and
2) This device and its antenna(s) must not be co-located with any other transmitters except in accordance
with FCC multi-transmitter product procedures.
3) For all products market in US, OEM has to limit the operation channels in CH1 to CH11 for 2.4G band by supplied
firmware programming tool. OEM shall not supply any tool or info to the end-user regarding to Regulatory Domain
change.
As long as 3 conditions above are met, further transmitter test will not be required. However, the OEM
Rev.1.0
RTL8821AU Combo module User Manua
integrator is still responsible for testing their end-product for any additional compliance requirements
required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.).
IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop
configurations or co-location with another transmitter), then the FCC authorization is no longer considered
valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will
be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC
authorization.
End Product Labeling
This transmitter module is authorized only for use in device where the antenna may be installed such that 20
cm may be maintained between the antenna and users. The final end product must be labeled in a visible area
with the following: “Contains FCC ID: TX2-RTL8821AU”.
Manual Information To the End User
This module is intended for OEM integrator. The OEM integrator is responsible for the compliance to all the
rules that apply to the product into which this certified RF module is integrated.
Additional testing and certification may be necessary when multiple modules are used.
Devices will not permit operations on channels 120-132 for 11a and 11n/a which overlap the 5600 - 5650
MHz band.
3.5.2 Industry Canada Statement
This device complies with RSS-210 of the Industry Canada Rules. Operation is subject to the following
two conditions:
1) this device may not cause interference and
2) this device must accept any interference, including interference that may cause undesired operation of the
device
French translation:
Ce dispositif est conforme à la norme CNR-210 d'Industrie Canada applicable aux appareils radio exempts de
licence. Son fonctionnement est sujet aux deux conditions suivantes: (1) le dispositif ne doit pas produire de
brouillage préjudiciable, et (2) ce dispositif doit accepter tout brouillage reçu, y compris un brouillage
susceptible de provoquer un fonctionnement indésirable.
(The user manual of transmitter devices equipped with detachable antennas shall contain the following
information in a conspicuous location: )
This device has been designed to operate with an antenna having a maximum gain of 5 dBi. Antenna having
a higher gain is strictly prohibited per regulations of Industry Canada. The required antenna impedance is 50
ohms.
Rev.1.0
RTL8821AU Combo module User Manua
CAN ICES-3 (B)/NMB-3(B)
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and
maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio
interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically
radiated power (e.i.r.p.) is not more than that necessary for successful communication.
French translation:
(Le manuel d'utilisation de dispositifs émetteurs équipés d'antennes amovibles doit contenir les informations
suivantes dans un endroit bien en vue:)
Ce dispositif a été conçu pour fonctionner avec une antenne ayant un gain maximum de 5 dBi. Une antenne à
gain plus élevé est strictement interdite par les règlements d'Industrie Canada. L'impédance d'antenne requise
est de 50 ohms.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peutfonctionner avec une
antenne d'un type et d'un gain maximal (ou inférieur) approuvé pourl'émetteur par Industrie Canada. Dans le
but de réduire les risques de brouillage radioélectriqueà l'intention des autres utilisateurs, il faut choisir le type
d'antenne et son gain de sorte que lapuissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas
l'intensité nécessaire àl'établissement d'une communication satisfaisante.
IMPORTANT NOTE:
IC Radiation Exposure Statement:
This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This
equipment should be installed and operated with minimum distance 20cm between the radiator & your body.
French translation:
NOTE IMPORTANTE: (Pour l'utilisation de dispositifs mobiles)
Déclaration d'exposition aux radiations:
Cet équipement est conforme aux limites d'exposition aux rayonnements IC établies pour un environnement
non contrôlé. Cet équipement doit être installé et utilisé avec un minimum de 20 cm de distance entre la
source de rayonnement et votre corps.
Caution: (DFS band usage-full bands)
(i) the device for operation in the band 5150-5250 MHz is only for indoor use to reduce the potential for
harmful interference to co-channel mobile satellite systems;
(ii) the maximum antenna gain permitted for devices in the bands 5250-5350 MHz and 5470-5725 MHz shall
comply with the e.i.r.p. limit; and
(iii) the maximum antenna gain permitted for devices in the band 5725-5825 MHz shall comply with the
e.i.r.p. limits specified for point-to-point and non point-to-point operation as appropriate.
Rev.1.0
RTL8821AU Combo module User Manua
(iv) Users should also be advised that high-power radars are allocated as primary users (i.e. priority users) of
the bands 5250-5350 MHz and 5650-5850 MHz and that these radars could cause interference and/or
damage to LE-LAN devices.
(v) Dynamic Frequency Selection (DFS) for devices operating in the bands 5250- 5350 MHz,
5470-5600 MHz and 5650-5725 MHz
French translation:
Avertissement:
Le guide d’utilisation des dispositifs pour réseaux locaux doit inclure des instructions précises sur les
restrictions susmentionnées, notamment :
(i) les dispositifs fonctionnant dans la bande 5 150-5 250 MHz sont réservés uniquement pour une utilisation
à l’intérieur afin de réduire les risques de brouillage préjudiciable aux systèmes de satellites mobiles utilisant
les mêmes canaux;
(ii) le gain maximal d’antenne permis pour les dispositifs utilisant les bandes 5 250-5 350 MHz et 5 470-5 725
MHz doit se conformer à la limite de p.i.r.e.;
(iii) le gain maximal d’antenne permis (pour les dispositifs utilisant la bande 5 725-5 825 MHz) doit se
conformer à la limite de p.i.r.e. spécifiée pour l’exploitation point à point et non point à point, selon le cas.
(iv) De plus, les utilisateurs devraient aussi être avisés que les utilisateurs de radars de haute puissance sont
désignés utilisateurs principaux (c.-à-d., qu’ils ont la priorité) pour les bandes 5 250-5 350 MHz et 5 650-5
850 MHz et que ces radars pourraient causer du brouillage et/ou des dommages aux dispositifs LAN-EL.
(v) Sélection dynamique de fréquences (DFS) pour les dispositifs fonctionnant dans les bandes 5250-5350
MHz, 5470-5600 MHz et 5650-5725 MHz.
This device is intended only for OEM integrators under the following conditions:
1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and
2) This device and its antenna(s) must not be co-located with any other transmitters except in accordance
with IC multi-transmitter product procedures.Refering to the multi-transmitter policy,
multiple-transmitter(s) and module(s) can be operated simultaneously without reassessment permissive
change.
3) For all products market in Canada, OEM has to limit the operation channels in CH1 to CH11 for 2.4G
band by supplied firmware programming tool. OEM shall not supply any tool or info to the end-user
regarding to Regulatory Domain change.
As long as 3 conditions above are met, further transmitter test will not be required. However, the OEM
integrator is still responsible for testing their end-product for any additional compliance requirements
required with this module installed.
Rev.1.0
RTL8821AU Combo module User Manua
The device could automatically discontinue transmission in case of absence of information to transmit, or
operational failure. Note that this is not intended to prohibit transmission of control or signaling information
or the use of repetitive codes where required by the technology.
French translation :
Cet appareil est conçu uniquement pour les intégrateurs OEM dans les conditions suivantes: (Pour utilisation
de dispositif module)
1) L'antenne doit être installée de telle sorte qu'une distance de 20 cm est respectée entre l'antenne et les
utilisateurs, et
2) Cet appareil et son antenne (s) ne doit pas être co-localisés ou fonctionnement en association avec une
autre antenne ou transmetteur.
3) Pour tous les produits vendus au Canada, OEM doit limiter les fréquences de fonctionnement CH1 à
CH11 pour bandes de fréquences 2.4G grâce aux outils de microprogrammation fournis. OEM ne doit pas
fournir d'outil ou d'informations à l'utilisateur final en ce qui concerne le changement de réglementation de
domaine.
Tant que les 3 conditions ci-dessus sont remplies, des essais supplémentaires sur l'émetteur ne seront pas
nécessaires. Toutefois, l'intégrateur OEM est toujours responsable des essais sur son produit final pour
toutes exigences de conformité supplémentaires requis pour ce module installé.
Le dispositif pourrait automatiquement cesser d'émettre en cas d'absence d'informations à transmettre, ou
une défaillance opérationnelle. Notez que ce n'est pas l'intention d'interdire la transmission des informations
de contrôle ou de signalisation ou l'utilisation de codes répétitifs lorsque requis par la technologie.
IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop
configurations or co-location with another transmitter), then the IC authorization is no longer considered
valid and the IC ID can not be used on the final product. In these circumstances, the OEM integrator will be
responsible for re-evaluating the end product (including the transmitter) and obtaining a separate IC
authorization.
French translation:
NOTE IMPORTANTE:
Dans le cas où ces conditions ne peuvent être satisfaites (par exemple pour certaines configurations
d'ordinateur portable ou de certaines co-localisation avec un autre émetteur), l'autorisation du Canada n'est
Rev.1.0
RTL8821AU Combo module User Manua
plus considéré comme valide et l'ID IC ne peut pas être utilisé sur le produit final. Dans ces circonstances,
l'intégrateur OEM sera chargé de réévaluer le produit final (y compris l'émetteur) et l'obtention d'une
autorisation distincte au Canada.
End Product Labeling
This transmitter module is authorized only for use in device where the antenna may be installed such that 20
cm may be maintained between the antenna and users. The final end product must be labeled in a visible area
with the following: “Contains IC: 6317A-RTL8821AU”.
French translation:
Plaque signalétique du produit final
Ce module émetteur est autorisé uniquement pour une utilisation dans un dispositif où l'antenne peut être
installée de telle sorte qu'une distance de 20cm peut être maintenue entre l'antenne et les utilisateurs. Le
produit final doit être étiqueté dans un endroit visible avec l'inscription suivante: "Contient des IC:
6317A-RTL8821AU ".
Manual Information To the End User
The OEM integrator has to be aware not to provide information to the end user regarding how to install or
remove this RF module in the user’s manual of the end product which integrates this module.
The end user manual shall include all required regulatory information/warning as show in this manual.
French translation:
Manuel d'information à l'utilisateur final
L'intégrateur OEM doit être conscient de ne pas fournir des informations à l'utilisateur final quant à la façon
d'installer ou de supprimer ce module RF dans le manuel de l'utilisateur du produit final qui intègre ce module.
Le manuel de l'utilisateur final doit inclure toutes les informations réglementaires requises et avertissements
comme indiqué dans ce manuel.
3.5.3 NCC 警語
經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均不得擅自變更頻率、加大功
率或變更原設計之特性及功能。
低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現有干擾現象時，應立即停用，並
改善至無干擾時方得繼續使用。前項合法通信，指依電信法規定作業之無線電通信。低功率射頻電
10
Rev.1.0
RTL8821AU Combo module User Manua
機須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。
在5.25-5.35GHz頻帶內操作之無線資訊傳輸設備，限室內使用。
本模組於取得認證後將依規定於模組本體標示審合格籤，並要求平台上標示「本產品內含射頻模
組：ID編號」
3.5.4 Japan Statement
Host system must be labeled with "Contains MIC ID:xxxxxx“, MIC ID displayed on label.
Realtek Semiconductor Corp.
Headquarters
No. 2, Innovation Road II, Hsinchu Science Park,
Hsinchu, 300, Taiwan, R.O.C.
Tel: 886-3-5780211 Fax: 886-3-5776047
www.realtek.com.tw
11
Rev.1.0

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