原装正品RTL8189ETV芯片，18138237810
The Realtek RTL8189ETV is a highly integrated single-chip 802.11n Wireless LAN （WLAN）
network SDIO interface （SDIO 1.1/ 2.0/ 3.0 compliant） controller. It is a WLAN MAC， a 1T1R
capable WLAN baseband， and_WLAN RF in a single chip. The RTL8189ETV provides a
complete soluTIon for a high throughput performance integrated wireless LAN device.
The RTL8189ETV WLAN baseband_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_transmission over20MHz and_40MHz 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.
