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54 RTL8188CUS-GR
SINGLE-CHIP IEEE 802.11b/g/n 1T1R WLAN CONTROLLER WITH USB2.0 INTERFACE
(QFN-46)
DATASHEET离别古诗20首
(CONFIDENTIAL: Development Partners Only)
Rev. 1.0
28 May 2010
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
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010-09-06 11:05:54Single-Chip IEEE 802.11b/g/n 1T1R WLAN Controller
with USB2.0 Interface (QFN-46) ii Track ID: JATR-2265-11 Rev. 1.0
COPYRIGHT
©2010 Realtek Semiconductor Corp. All rights rerved. 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 subquent to the production of this guide.
REVISION HISTORY
Revision Relea Date Summary 1.0 2010/05/28 First relea.
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Single-Chip IEEE 802.11b/g/n 1T1R WLAN Controller with USB2.0 Interface (QFN-46) iii Track ID: JATR-2265-11 Rev. 1.0
Table of Contents
1.GENERAL DESCRIPTION (1)
2.FEATURES (2)
3.APPLICATION DIAGRAM (4)
3.1.S INGLE-B AND 11N (1X1)S OLUTION (11N 1X1MAC/BB/RF+PA) (4)
4.PIN ASSIGNMENTS (5)
4.1.P ACKAGE I DENTIFICATION (5)
5.PIN DESCRIPTIONS (6)
5.1.USB T RANSCEIVER I NTERFACE (6)
5.2.P OWER P INS (6)
5.3.RF I NTERFACE (6)
关于西藏的电影
5.4.LED I NTERFACE (7)
5.5.C LOCK AND O THER P INS (7)
6.ELECTRICAL AND THERMAL CHARACTERISTICS (9)
6.1.T EMPERATURE L IMIT R ATINGS (9)
6.2.DC C HARACTERISTICS (9)
7.MECHANICAL DIMENSIONS (10)
7.1.M ECHANICAL D IMENSIONS N OTES (10)
8.ORDERING INFORMATION (11)
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Single-Chip IEEE 802.11b/g/n 1T1R WLAN Controller with USB2.0 Interface (QFN-46) iv Track ID: JATR-2265-11 Rev. 1.0
List of Tables
T ABLE 1.USB T RANSCEIVER I NTERFACE (6)
T ABLE 2.P OWER P INS (6)
T ABLE 3.RF I NTERFACE (6)
T ABLE 4.LED I NTERFACE (7)
T ABLE 5.C LOCK AND O THER P INS (7)
T ABLE 6.T EMPERATURE L IMIT R ATINGS (9)
T ABLE 7.DC C HARACTERISTICS (9)
T ABLE 8.O RDERING I NFORMATION (11)
List of Figures
F IGURE 1.S INGLE-B AND 11N (1X1)S OLUTION (11N 1X1MAC/BB/RF+PA) (4)
F IGURE 2.P IN A SSIGNMENTS (5)
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Single-Chip IEEE 802.11b/g/n 1T1R WLAN Controller with USB2.0 Interface (QFN-46) 1Track ID: JATR-2265-11 Rev. 1.0
1.General Description
The Realtek RTL8188CUS-GR is a highly integrated single-chip QFN-46 pin Wireless LAN (WLAN) USB2.0 network interface controller compatible with the 802.11n specification. It combines a MAC, a 1T1R capable baband, and RF in a single chip. The RTL8188CUS provides a complete solution for a high throughput performance wireless client.
The RTL8188CUS baband implements Orthogonal Frequency Division Multiplexing (OFDM) with 1 transmit and 1 receive path and is compatible with the IEEE 802.11n specification. Features include one spatial stream transmission, short guard interval (GI) of 400ns, spatial spreading, and tra
nsmission over 20MHz and 40MHz bandwidth.
For legacy compatibility, Direct Sequence Spread Spectrum (DSSS), Complementary Code Keying (CCK) and OFDM baband processing are included to support all IEEE 802.11b and 802.11g data rates. Differential pha 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, and 64QAM 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 higher data rates of 54Mbps and 150Mbps for IEEE 802.11g and 802.11n OFDM respectively. The RTL8188CUS builds in an enhanced signal detector, an adaptive frequency domain equalizer, and a soft-decision Viterbi decoder to alleviate vere 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 offt, pha noi, frequency offt, and timing offt 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, r
espectively. The RTL8188CUS 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 the better performance in the analog portions of the transceiver.
The RTL8188CUS MAC supports 802.11e for multimedia applications, 802.11i for curity, and 802.11n 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, and APSD, reduce the power wasted during idle time, and compensates for the extra power required to transmit OFDM. The RTL8188CUS provides simple legacy and 20MHz/40MHz co-existence mechanisms to ensure backward and network compatibility.
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Single-Chip IEEE 802.11b/g/n 1T1R WLAN Controller with USB2.0 Interface (QFN-46) 2Track ID: JA
TR-2265-11 Rev. 1.0
2.Features
General
46-pin QFN
CMOS MAC, Baband PHY, and RF in a single chip for IEEE 802.11b/g/n compatible WLAN
Complete 802.11n solution for 2.4GHz band
72.2Mbps receive PHY rate and 72.2Mbps
transmit PHY rate using 20MHz bandwidth
150Mbps receive PHY rate and 150Mbps transmit PHY rate using 40MHz bandwidth
Compatible with 802.11n specification
Backward compatible with 802.11b/g devices while operating in 802.11n mode Host Interface
Complies with USB Specification Revision
2.0
Standards Supported
IEEE 802.11b/g/n compatible WLAN
IEEE 802.11e QoS Enhancement (WMM)
IEEE 802.11h TPC, Spectrum Measurement
802.11i (WPA, WPA2). Open, shared key, and pair-wi key authentication rvices MAC Features
Frame aggregation for incread MAC efficiency (A-MSDU, A-MPDU)
Low latency immediate High-Throughput Block Acknowledgement (HT-BA)
猪蹄莲藕汤
Long NAV for media rervation with CF-End for NAV relea
PHY-level spoofing to enhance legacy compatibility
Power saving mechanism
Channel management and co-existence
Multiple BSSID feature allows the
RTL8188CUS to assume multiple MAC
identities when ud as a wireless bridge
Transmit Opportunity (TXOP) Short
Inter-Frame Space (SIFS) bursting for higher multimedia bandwidth
Peripheral Interfaces
General Purpo Input/Output (10 pins)
Three configurable LED pins
Configurable Bluetooth Coexistence
Interface
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