88W8686 Marvell, 88W8686 Datasheet
88W8686
Manufacturer Part Number
88W8686
Description
Manufacturer
Marvell
Datasheet
1.88W8686.pdf
(6 pages)
Specifications of 88W8686
Case
BGA
Date_code
07+
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PRODUCT OVERVIEW
The Marvell
highly-integrated IEEE 802.11a/g/b MAC/Baseband/RF
WLAN system-on-chip (SoC), designed to support IEEE
802.11a or 802.11g payload data rates of 6, 9, 12, 18,
24, 36, 48, and 54 Mbps, as well as 802.11b data rates of
1, 2, 5.5, and 11 Mbps.
The device provides the combined functions of the IEEE
Standard 802.11/802.11b Direct Sequence Spread
Spectrum (DSSS), 802.11a/g Orthogonal Frequency
Division Multiplexing (OFDM) baseband modulation,
Medium Access Controller (MAC), CPU, memory, host
interfaces, and direct conversion WLAN RF radio on a
single integrated chip.
The core functional units of the 88W8686 are connected
with a high throughput interconnect system, as shown in
Figure
The 88W8686 is equipped with a fully integrated RF to
baseband transceiver that operates in both the 2.4 GHz
ISM radio band for 802.11g/b WLAN applications and
5 GHz UNII radio band for 802.11a WLAN applications. It
contains all the circuitry to support both transmit and
receive operations.
The transceiver architecture includes a Marvell
second-generation radio, designed specifically for
co-existence with cellular phones. Cellular band transmit
spurious tone, noise, and receive jammer considerations
have been designed for into the device.
Due to very low spectral emissions in the cellular phone
receive band, the device does not interfere with cellular
Copyright © 2009 Marvell
November 30, 2009, 2.00
1.
®
88W8686 is a low-cost, low-power
Integrated MAC/Baseband/RF SoC
phone reception and is immune to high power cellular
phone transmission signals.
For optimum performance, the gain adjustment of the
integrated LNA and AGC on the receive path is
seamlessly controlled by baseband functions. The entire
receive path has over 90 dB of voltage gain and gain
control range.
Integrated transmitters up-convert the quadrature
baseband signal, and then deliver the RF signals to
external power amplifiers for 2.4 GHz and 5 GHz radio
band transmission.
Local oscillator frequencies are generated by a fully
integrated programmable frequency synthesizer without
any external components. The loop bandwidth is
optimized for phase noise and dynamic performance and
quadrature signals are generated on-chip.
For security, the 88W8686 supports the IEEE 802.11i
security standard through implementation of the
Advanced Encryption Standard (AES)/Counter Mode
CBC-MAC Protocol (CCMP), and Wired Equivalent
Privacy (WEP) with Temporal Key Integrity Protocol
(TKIP) security mechanisms.
For video, voice, and multimedia applications, the
88W8686 supports 802.11e Quality of Service (QoS). A
Bluetooth coexistence interface is also supported.
The 88W8686 supports both a generic SPI (G-SPI) and
SDIO host interface and is available in QFN and flip chip
packages.
Doc. No. MV-S106649-00 Rev. A
Product Brief
88W8686
Page 1
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