RTL8189EM datasheet(7/21 Pages) REALTEK

Part #	RTL8189EM

Description	SINGLE-CHIP IEEE 802.11b/g/n 1T1R WLAN With SDIO INTERFACE

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Manufacturer	REALTEK [Realtek Semiconductor Corp.]

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RTL8189EM

Datasheet

Single-Chip IEEE 802.11b/g/n 1T1R WLAN Controller

with SDIO Interface

3

Track ID: JATR- Rev. 0.1

2. Features

General

 32-pin QFN

 CMOS MAC, Baseband PHY, and RF in a

single chip for 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 SDIO 1.1/ 2.0 for WLAN

with clock rate up to 50MHz

 GSPI interface for configurable endian for

WLAN

Standards Supported

 IEEE 802.11b/g/n compatible WLAN

 IEEE 802.11e QoS Enhancement (WMM)

 802.11i (WPA, WPA2). Open, shared key,

and pair-wise key authentication services

WLAN MAC Features

 Frame aggregation for increased MAC

efficiency (A-MSDU, A-MPDU)

 Low latency immediate High-Throughput

Block Acknowledgement (HT-BA)

 PHY-level spoofing to enhance legacy

compatibility

 Power saving mechanism

 Channel management and co-existence

 Transmit Opportunity (TXOP) Short

Inter-Frame Space (SIFS) bursting for

higher multimedia bandwidth

 Support Scan and Preferred Network

Offload

WLAN PHY Features

 IEEE 802.11n OFDM

 One Transmit and one Receive path (1T1R)

 20MHz and 40MHz bandwidth

transmission

 Short Guard Interval (400ns)

 DSSS with DBPSK and DQPSK, CCK

modulation with long and short preamble

 OFDM with BPSK, QPSK, 16QAM, and

64QAM modulation.

Convolutional Coding Rate: 1/2, 2/3, 3/4,

and 5/6

 Maximum data rate 54Mbps in 802.11g and

150Mbps in 802.11n

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