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标签： Marvell88W8686

Marvell88W8686芯片手册

Cover

88W8686

Integrated MAC/Baseband/RF Low Power SoC

IEEE 802.11a/g/b

Datasheet

Doc. No. MV-S103342-00, Rev. D

February 20, 2007

Document Classification: Proprietary

SDK Use Only

88W8686

Datasheet

Note

Provides related information or information of special importance.

Caution

Indicates potential damage to hardware or software, or loss of data.

Warning

Indicates a risk of personal injury.

Document Status

Doc Status: 2.00

Technical Publication: 0.xx

For more information, visit our website at:

www.marvell.com

No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any

purpose, without the express written permission of Marvell. Marvell retains the right to make changes to this document at any time, without notice. Marvell makes no

warranty of any kind, expressed or implied, with regard to any information contained in this document, including, but not limited to, the implied warranties of

merchantability or fitness for any particular purpose. Further, Marvell does not warrant the accuracy or completeness of the information, text, graphics, or other items

contained within this document.

Marvell products are not designed for use in life-support equipment or applications that would cause a life-threatening situation if any such products failed. Do not use

Marvell products in these types of equipment or applications.

With respect to the products described herein, the user or recipient, in the absence of appropriate U.S. government authorization, agrees:

1) Not to re-export or release any such information consisting of technology, software or source code controlled for national security reasons by the U.S. Export Control

Regulations ("EAR"), to a national of EAR Country Groups D:1 or E:2;

2) Not to export the direct product of such technology or such software, to EAR Country Groups D:1 or E:2, if such technology or software and direct products thereof

are controlled for national security reasons by the EAR; and,

3) In the case of technology controlled for national security reasons under the EAR where the direct product of the technology is a complete plant or component of a

plant, not to export to EAR Country Groups D:1 or E:2 the direct product of the plant or major component thereof, if such direct product is controlled for national security

reasons by the EAR, or is subject to controls under the U.S. Munitions List ("USML").

At all times hereunder, the recipient of any such information agrees that they shall be deemed to have manually signed this document in connection with their receipt of

any such information.

Libertas, Link Street, NetGX, PHYAdvantage, Prestera, Raising The Technology Bar, The Technology Within, Virtual Cable Tester, and Yukon are registered trademarks

of Marvell. Ants, AnyVoltage, Discovery, DSP Switcher, Feroceon, GalNet, GalTis, Horizon, Marvell Makes It All Possible, RADLAN, UniMAC, and VCT are trademarks

of Marvell. All other trademarks are the property of their respective owners.

Doc. No. MV-S103342-00 Rev. D

Page 2

CONFIDENTIAL

Document Classification: Proprietary

February 20, 2007, 2.00

88W8686

Datasheet

Features

The Marvell

88W8686 is a low-cost, low-power

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 1.

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 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.

February 20, 2007, 2.00

CONFIDENTIAL

Document Classification: Proprietary

Doc. No. MV-S103342-00 Rev. D

Page 3

88W8686

Datasheet

Figure 1: Top Block Diagram

88W8686

Encryption

802.11

MAC

Processor

JTAG

Interface

Feroceon

CPU

JTAG

CPU

Interface

Timers

Interrupts

Power

Mgmt

Bluetooth

Arbiter

802.11a/g/b

Baseband

(DSSS/CCK/

OFDM)

BBU ADC

BBU DAC

WLAN MAC/Baseband

Direct Conversion RF

802.11a

5 GHz Tx

802 .11g/b

2.4 GHz Tx

5 GHz

External PA

PLL

802.11a

5 GHz Rx

802.11g/b

2.4 GHz Rx

Osc

2.4 GHz

External PA

Antenna Select ,

T/R Switch

Power Enable Control

Serial IF

XTAL_IN/XO

XTAL_OUT

Bluetooth Coexistence Interface

PDn

SLEEP_CLK

Host Interface

SRAM

Peripheral Bus

3-Wire, 4-Wire Interface

2-Wire Serial Interface

1-Wire Serial Interface

Serial EEPROM

Clocked

Serial Unit

UART

UART/GPIO

GPIO/LED

Peripheral

Bus Unit

G-SPI

SDIO

DMA

Host Interface

Unit

SDIO

EFERENCE

ESIGNS

Marvell reference designs are highly-integrated low cost, production quality designs that provide a quick time-to-

market solution for customers developing single chip IEEE 802.11a/g/b WLAN solutions.

The 88W8686 maintains software driver compatibility with current Marvell two-chip solutions (88W8385 and

88W8015). Customers already engaged in designing current Marvell solutions can leverage a fully validated tool

chain. For further information, contact Marvell representatives.

Doc. No. MV-S103342-00 Rev. D

Page 4

CONFIDENTIAL

Document Classification: Proprietary

February 20, 2007, 2.00

88W8686

Datasheet

PPLICATIONS

• Cellular handsets

• Consumer electronic devices that require low

power consumption

ROCESSOR

CPU

• Integrated Marvell Feroceon® CPU(ARMv5TE-

compliant)

• Offloads wireless protocol stack processing from

host CPU

• 128 MHz operating frequency

ENERAL

EATURES

• Ultra low-power dissipation

• Single-chip integration of 802.11a/g/b wireless RF

and baseband, MAC, CPU, memory, and host

interfaces

• Integrates all RF to baseband transmit and receive

operations, with support for external PAs

• Fully integrated frequency synthesizers with

optimized phase noise performance for OFDM

applications

• Integrated direct conversion WLAN RF radio

• Supports 19.2, 20, 24, 26, 38.4, and 40 MHz

oscillator clock sources

• Software backward compatible with 88W8385 and

88W8015 devices

DMA

• Independent 2-channel Direct Memory Access

(DMA)

ETWORKING

UNCTIONS

WLAN MAC

• Supports Ad-Hoc and Infrastructure modes

• Supports Contention Free (CF)-Poll and CF-ACK

for operation under Point Coordination Function

(PCF)

• Supports Request-to-Send (RTS)/Clear-to-Send

(CTS) for operation under Distributed Coordination

Function (DCF)

• Hardware filtering of 64 multicast and 96 unicast

addresses and additional firmware options

• On-chip Tx and Rx FIFOs for maximum throughput

• Support for 802.11e QoS

• Support for 802.11h DFS statistics processing

• Supports Open System and Shared Key

Authentication services

• Supports long and short preamble generation on a

frame-by-frame basis

• Supports IEEE Power Save mode

WLAN B

ASEBAND

• DSSS and OFDM modulation

• Advanced Equalizer for Complementary Code

Keying (CCK) modes

• Differential Binary Phase Shift Keying (DBPSK),

Differential Quadrature Phase Shift Keying

(DQPSK), and CCK modulation modes

• 16-QAM and 64-QAM modulation

• On-chip A/D and D/A converters for Inphase/

Quadrature (I/Q) channels

• Targeted for multi-path delay spreads up to 680 ns

in 11 Mbps mode and 150 ns in 54 Mbps mode

• Supports 802.11h (DFS and TPC) statistics

gathering

• Supports 802.11j channels (Japan)

AYLOAD

ATA

ATES

• IEEE 802.11 data rates of 1 and 2 Mbps

• IEEE 802.11b data rates of 5.5 and 11 Mbps

• IEEE 802.11a/g data rates of 6, 9, 12, 18, 24, 36,

48, and 54 Mbps for multimedia content

transmission

ACKAGING

• 68-pin QFN package

• 280

μm

pitch flip chip

• 500

μm

pitch flip chip

1. 500

μm

flip chip option supports 802.11g/b only.

February 20, 2007, 2.00

CONFIDENTIAL

Document Classification: Proprietary

Doc. No. MV-S103342-00 Rev. D

Page 5

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