Realtek Semiconductor RTL8188CUB8 User Manual

RTL8188CUB8

Slim Module Combo Card User’s Manual

Rev. 1.0

07 Oct 2010

Realtek Semiconductor Corp.

No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
Tel.: [phone]. Fax: [phone]
www.realtek.com.tw

RTL8188CUB8

COPYRIGHT

©2010 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, neither expressed nor implied,
including, but not limited to, the particular purpose. 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.

Slim Module Combo Card User Manual

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. In that event, please contact your
Realtek representative for additional information that may help in the development process.

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Table of Contents

1. GENERAL DESCRIPTION................................................................................................................................................1

1.1. RTL8188CUS .................................................................................................................................................................1

1.2. BLUECORE CSR8510......................................................................................................................................................2

2. FEATURES...........................................................................................................................................................................2

2.1. RTL8188CUS .................................................................................................................................................................2

2.2. BLUECORE CSR8510......................................................................................................................................................3

PRODUCT SPECIFICATIONS .................................................................................................................................................4

2.3. CONNECTER PIN ASSIGNMENT.........................................................................................................................................4

2.4. MECHANICAL..................................................................................................................................................................5

2.5. ENVIRONMENTAL ............................................................................................................................................................6

2.5.1. Operating ...............................................................................................................................................................6

2.5.2. Storage....................................................................................................................................................................6

2.6. FUNCTIONAL SPECIFICATIONS.........................................................................................................................................7

2.7. WARNING........................................................................................................................................................................8

4.5.1 Federal Communication Commission Interference Statement......................................................................................8

4.5.2 Industry Canada Statement........................................................................................................................................10

4.5.3 NCC

警語

...................................................................................................................................................................11

List of Tables

TABLE 1. CONNECTER PIN ASSIGNMENT .................................................................................................................................4

TABLE 2. FUNCTIONAL SPECIFICATIONS .......................................................................................................................................7

List of Figures

FIGURE 1. RTL8188CUS SLIM MODULE MECHANICAL SPECIFICATION ......................................................................................5

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1. General Description

1.1. RTL8188CUS

The Realtek RTL8188CUS is a highly integrated single-chip Wireless LAN (WLAN) controller
compatible with the IEEE 802.11n specification. It combines a MAC, a 1T1R capable baseband, and RF in
a single chip. The RTL8188CUS provides a complete solution for a high-performance wireless client.

The RTL8188CUS baseband implements Multiple Input, Multiple Output (MIMO) Orthogonal Frequency
Division Multiplexing (OFDM) with one transmit and one receive path (1T1R). Features include one
spatial stream transmission, short Guard Interval (GI) of 400ns, spatial spreading, and support for both
20MHz and 40MHz channel bandwidth.

For legacy compatibility, Direct Sequence Spread Spectrum (DSSS), Complementary Code Keying (CCK)
and OFDM baseband processing are included to support all IEEE 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, 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 severe 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 RTL8188CUS 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 RTL8188CUS MAC supports 802.11e for multimedia applications, 802.11i for security, 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 U-APSD,
and APSD, reduces 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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1.2. BlueCore CSR8510

CSR BlueCore CSR8510 WLCSP is a product from CSR’s Connectivity Centre . It is a single-chip
radio and baseband IC for Bluetooth 2.4GHz systems including EDR to 3Mbps.Dedicated signal and
baseband processing is included for full Bluetooth operation. CSR designed CSR8510 WLCSP to reduce
PCB area and the number of external components, including no requirement for an external balun.This
ensures that production costs are minimised.

2. Features

2.1. RTL8188CUS

General

 46-pin QFN
 CMOS MAC, Baseband PHY and RF in

a single chip for IEEE 802.11b/g/n
compatible WLAN

 75Mbps receive PHY rate and 75Mbps

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 at 802.11n data
rates

Host Interface

 USB Port

Standards Supported

 IEEE 802.11b/g/n compatible WLAN
 IEEE 802.11e QoS Enhancement

(WMM)

 IEEE 802.11i (WPA, WPA2). Open,

shared key, and pair-wise key
authentication services

2 Rev.1.0

MAC Features

 Frame aggregation for increased MAC

efficiency (A-MSDU, A-MPDU)

 Low latency immediate

High-Throughput Block
Acknowledgement (HT-BA)

 Long NAV for media reservation with

CF-End for NAV release

 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 used as a wireless bridge

 Supports Wake-On-WLAN via Magic

Packet and Wake-up frame

 Transmit Opportunity (TXOP) Short

Inter-Frame Space (SIFS) bursting for
higher multimedia bandwidth

Peripheral Interfaces

 General Purpose Input/Output (8 pins)
 Three configurable LED pins
 Configurable Bluetooth Coexistence

Interface

PHY Features