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Wireless LAN 802.11g(b) Access Point,
Wireless Gateway Chipset
88W8000G and 88W8510
access point/gateway solutions. The 88W8000G RF transceiver integrates a low noise amplifier, a voltage-controlled
oscillator and a frequency synthesizer, as well as other necessary RF and analog functions onto one chip. The
88W8510 device is a single chip that combines the functions of the Direct Sequence Spread Spectrum (DSSS) and
Orthogonal Frequency Division Multiplexing (OFDM) baseband processor, Medium Access Control (MAC) processor,
embedded ARM CPU, on-chip memory, advanced encryption, Quality of Service (QoS), external SDRAM/FLASH
memory controller, and one Fast Ethernet MAC and PHY. The high level of integration reduces the overall Bill of
Materials (BOM) cost for an access point/gateway by eliminating the need for an external CPU and Fast Ethernet
port for wired infrastructure connectivity. Together, the 88W8000G and 88W8510 chipset supports IEEE 802.11g
data rates of 6, 9, 12, 18, 24, 36, 48, and 54 Mbps as well as 802.11b rates of 1, 2, 5.5, and 11 Mbps. There is
also support for proprietary data rates of 22 Mbps and 72 Mbps. The 88W8000G and the 88W8510 chipset provides
an optimal solution for access points as well as wireless home gateway applications.
Libertas 88W8510 Access Point/Gateway Chip
2.4 GHz
PRODUCT OVERVIEW
The Marvell
簍
Libertas
陋
88W8000G and 88W8510 chipset comprises the world脮s most integrated CMOS 802.11g(b)
Libertas 88W8000G
RF-Baseband Transceiver
Antenna
Diversity
ADC
Controls
Security
Engine
(WEP, AES,
CCM)
802.11
MAC
802.11e
QoS
Power
Mgmt.
SDRAM
Flash
Controller
Host
Interface
Internal Bus
On-Chip
LNA
RF
Filter
RF Optional
Switch Ext. PA
VCO
On-Chip
PA
Receiver
Frequency
Synthesizer
Transmitter
Demodulator
802.11g(b)
External
Interface
External
SDRAM
Flash
PCI or
Twisted Pair
or MII
High-Speed
ARM9
CPU
Memory
JTAG
DAC
Modulator
802.11g(b)
GPIO/
LED
TR_SW
Serial I/F
Power
Enable
Control
44 MHz
XOSC
UART
Serial
(EEPROM)
Controller
EEPROM
GPIO (15:0)
Fig 1. Libertas WLAN 802.11g(b) Access Point/Gateway Chipset (88W8000G and 88W8510) Block Diagram
88W8000G FEATURES
T/R Switch, Serial Interface, Power Enable Control
樓
Integration of RF to analog baseband transmit and receive
functionalities
樓
Flexibility in using internal or external power amplifier
樓
Provision for external as well as integrated power loop control
樓
High receiver sensitivity
樓
Programmable frequency synthesizers with integrated VCOs
and I/Q generation
樓
Small 9mm x 9mm, 64-pin QFN package
BENEFITS
樓
Reduces BOM cost, simplifies board layout and provides smaller
form factor
樓
Allows users to provide an integrated or high-performance solution
樓
Stabilizes power amplifier output at user designated values across
temperature, voltage supply and semiconductor variations
樓
Improves detection of weak signals and increases range
樓
Provide for longer range in terms of adaptive gain adjustments
for best signal reception
樓
Reduced footprint allowing for compact designs
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