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SINGLE-CHIP IEEE 802.11ac 2T2R WLAN CONTROLLER
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RTL8812AU-CG Product Details
RTL8812AU-CG SINGLE-CHIP IEEE 802.11ac 2T2R WLAN CONTROLLER WITH USB 2.0/3.0 INTERFACE DATASHEET (CONFIDENTIAL: Development Partners Only) Rev. 0.2 24,May, 2011 Track ID: JATR-2265-11 Realtek Semiconductor Corp. No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan Tel.: +886-3-578-0211. Fax: +886-3-577-6047 w w w. realtek .com RTL8812AU-CG Datasheet 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 Release Date 0.2 24, May, 2012 Summary Preliminary release. Single-Chip IEEE 802.11a/b/g/n/ac 2T2R WLAN Controller with USB3.0 Interface ii Track ID: JATR-2265-11 Rev. 0.2 RTL8812AU-CG Datasheet Table of Contents 1. GENERAL DESCRIPTION ..1 2. FEATURES .3 3. APPLICATION DIAGRAMS …5 3.1. 11AC DUAL-BAND 2X2 RF APPLICATION .5 4. PIN ASSIGNMENTS .6 4.1. PACKAGE IDENTIFICATION 7 5. PIN DESCRIPTIONS 7 5.1. USB EXPRESS TRANSCEIVER INTERFACE .
The Realtek RTL8812AU-CG is a highly integrated single-chip MIMO (Multiple In, Multiple Out) Wireless
LAN (WLAN) USB 2.0/3.0 network interface controller complying with the wireless very high throughput
IEEE 802.11ac Draft 2.0 and 802.11n specifications. The RTL8812AU-CG provides a complete solution for a
high-performance wireless client and also supports WiFi Direct feature that can easily build a WiFi P2P PAN
The RTL8812AU-CG baseband implements Multiple Input, Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) with two transmit and two receive paths (2T2R). Features include two spatial stream transmissions, short Guard Interval (GI) of 400ns, spatial spreading, and support for both 20MHz, 40MHz and 80MHz channel bandwidth. Moreover, RTL8812AU provides one spatial stream space-time block code (STBC) , Transmit Beamforming (TxBF) and Low Density Parity Check (LDPC) to extend the range of transmission. At the receiver, extended range and good minimum sensitivity is achieved by having receiver diversity up to 2 antennas. As the recipient, the RTL8812AU also supports explicit sounding packet feedback that helps senders with beamforming capability. With 2 independent RF blocks, the RTL8812AU can perform fast roaming without link interruption.
For legacy compatibility, Direct Sequence Spread Spectrum (DSSS), Complementary Code Keying (CCK) and OFDM baseband processing are included to support all IEEE 802.11b, 802.11g and 802.11a 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 256QAM modulation of the individual subcarriers, and rate compatible coding rate of 1/2, 2/3, 3/4, and 5/6, provide up to 866.7Mbps for IEEE 802.11ac MIMO OFDM.
The RTL8812AU-CG builds in an enhanced signal detector, an adaptive frequency domain equalizer, and a soft-decision Viterbi decoder to alleviate severe multi-path effects and mutual interference in the reception of multiple streams. For better detection quality, receive diversity with Maximal-Ratio-Combine (MRC) applying up to two receive paths is implemented. Robust interference detection and suppression are provided to protect against Bluetooth, cordless phone, and microwave oven interference.
Receive vector diversity for multi-stream application is implemented for efficient utilization of the MIMO channel. 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 RTL8812AU-CG supports fast receiver Automatic Gain Control (AGC) with synchronous and asynchronous control loops among antennas, antenna diversity functions, and adaptive transmit power control functions to obtain better performance in the analog portions of the transceiver.
The RTL8812AU-CG MAC supports 802.11e for multimedia applications, 802.11i and WAPI (Wireless Authentication Privacy Infrastructure) 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, U-APSD, and MIMO power saving reduce the power wasted during idle time, and compensate for the extra power required to transmit MIMO OFDM. The RTL8812AU-CG provides simple legacy, 20MHz/40MHz/80MHz co-existence mechanisms to ensure backward and network compatibility.
QFN76 9x9mm package
CMOS MAC, Baseband PHY and RF in a single chip for IEEE 802.11a/b/g/n/ac Draft 2.0 compatible WLAN
802.11ac MIMO solution for 5G band
Complete 802.11n MIMO solution for 2.4GHz and 5Ghz band
2x2 MIMO technology for extended reception robustness and exceptional throughput
Maximum PHY data rate up to 173.3 Mbps using 20MHz bandwidth, 400Mbps using 40MHz bandwidth, and 866.7Mbps using 80MHz bandwidth.
Backward compatible with 802.11a/b/g devices while operating at 802.11n data rates
Backward compatible with 802.11a/n devices while operating at 802.11ac data rates.
(Picture:Pinout / Diagram)
- Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
- RoHs Status
- Lead free/RoHS Compliant
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