Realtek Wireless LAN network interface controller

Realtek (Realtek) RTL8185L integrated in a single chip WLAN (wireless LAN) MAC and XC9536-15PC44C datasheet and DSSS (direct sequence spread spectrum) baseband processor, a knife board, highly integrated, price reasonable WLAN network interface controller full compliance with IEEE 802.11a/b/g protocol. RTL8185L supports SIFS (short frame gap) trigger mode, nodes provide 802.11b protection mechanisms against the conflict.

RTL8185L to achieve DSSS, CCK (Complementary Code Keying), OFDM (orthogonal frequency division multiplexing) baseband processor, supporting all IEEE 802.11a, 802.11b and XC9536-15PC44C price and 802.11g data rates. RTL8185L provides DPSK (differential phase shift keying), DBPSK (differential binary phase shift keying coherent), DQPSK (differential quadrature phase shift keying), CCK and XC9536-15PC44C suppliers and other modulation can be achieved 1,2,5.5,11 Mbps data rate ; associated with FFT / IFFT (Fourier transform / inverse Fourier transform) and BPSK (binary frequency shift keying), QPSK (Quadrature Frequency Shift Keying), 16QAM (QAM: quadrature amplitude modulation), 64QAM modulation can be achieved such as 6, 9, 12, 18, 24, 36, 48, 54Mbps. In Turbo mode, Realtek, RTL8185L data provided by the rate of 72Mbps.

RTL8185L built in the enhanced signal detector, adaptive frequency equalizer, soft-decision Viterbi decoder, used to alleviate multipath effects. To prevent the radio frequency pre-attenuation, RTL8185L IQ provides a highly efficient non-equilibrium calibration, DC offset, phase noise, the time drift compensation. At the same time, digital transmission and optional FIR filter to meet the transmission spectrum mask requirements and to prevent adjacent channel interference. RTL8185L show the lowest sensitivity and robustness of the signal under test, the binary symbol detection and channel estimation.

RTL8185L supports AGC (Automatic Gain Control) to provide antenna diversity and adaptive transmit power control function, the analog portion of the radio transceiver shown good performance. RTL8185L also integrates a single-chip D / A and A / D converter for analog I and Q inputs and outputs, transmit TSSI end, the receiver input and AGC RSSI output.

RTL8185L supports ACPI (Advanced Configuration Power Management Interface), OSPM (OS Direct Power Management) modern operating system, PCI power management interface.

RTL8185L supports descriptor-based enhanced connection queue cache management framework, which for the modern design of the network interface card is especially important. This feature is due to the low CPU utilization. In addition, RTL8185L PCI-performance in the transmission of memory through the PCI read to trigger, in the acceptance by writing to the memory to activate.

RTL8185L performance:

128-Pin E-pad TQFP package;
no state mechanism for the implementation of RAM can be involved;
follow the IEEE 802.11a/b/g protocol;
support descriptor-based buffer management;
on a single chip integrated WLAN MAC, DSSI / OFDM baseband processor;
built-in enhanced signal detector, adaptive frequency equalizer, soft decision Viterbi decoder to alleviate multipath effects;
embedded in a single chip A / D and D / A converters for I / Q Data, AGC and adaptive power control;
11Mbps to support 125ns target multi-path delay;
support the transmission and reception;
data rate of 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, 54Mbps, Turbo mode to 72Mbps;
support CardBus; CIS is stored in 93C56 in;
provide internal 40MHz OSC clock; IEEE 802.11gs 25PPM OSC must ensure that the drift, IEEE 802.11a ensure 20PPM within;
compatible with PC97, PC98, PC99, PC2001 standards;
for PCI local bus network interface controller;
follow the PCI Revision 2.2 and MiniPCI Revision 1.0;
follow the power management revision 1.1;
follow the PC Card Revision 8.2 ;
support the PCI clock is 20MHz ~ 36MHz;
support memory read and write, read and disable multi-threading;
PCI bus to provide data transmission and PCI memory space, I / O space match the data transmission;
support PCI VDP (vital product data);
supports ACPI, PCI power management;
support the WOL function and remote wake-up function;
Supports 4 WOL signals;
support the auxiliary power supply auto-detection;
in the RTS / CTS, CTS-to-self protection mechanism provided in IEEE 802.11g;
in large throughput volume of cases to provide burst mode;
provide DSSS, DBPSK, DQPSK, CCK and other modulation / demodulation mode;
provide BPSK, QPSK, 16QAM, 64QAM and other modulation / Solutions transfer mode OFDM;
provide high IQ non-equilibrium calibration, DC offset, phase noise, the time pre-simulation of drift compensation is used to prevent decay;
digital transmission and the optional FIR filter to meet the transmission spectral mask requirements and to prevent adjacent channel interference;
provide AGC & antenna diversity functions;
adaptive transmission power control;
hardware-based IEEE 802.11i encryption / decryption mechanisms, including 64-bit/128-bit WEP, TKIP, AES;
any changes according to needs of PCI read and write size;
support to the external clock as the clock source 32 -bit timer;
contains two independent transmit and receive FIFO buffer;
LAN and wake-up function without the participation of advanced power reserve model;
using 93C46 (64 * 16-bit EEPROM) or 93C56 (128 * 16-bit EEPROM) storage of energy configuration, ID parameter, and VPD data;
LED pins for various networks;
supports two GPIO pins;
two ports are supported by data in the loopback;
RF transceivers for different applications in a flexible RF transceiver interfaces;
diversity and aggregation operation;
requires 3.3V and 1.8V of power supply;
with a tolerance of 5V I / O;
0.18μm CMOS processing.

Applications:

PCI / CarBus WLAN adapter;
wireless router.