88W8764 Datasheet, PDF (1/4 Pages) –

series
Marvell Avastar 88W8764 Integrated 4x4
MAC/Baseband/RF MIMO SoC
Supports High Throughput Data Rates for Next Generation WLAN Products
PRODUCT OVERVIEW
The Marvell^® Avastar™ 88W8764 is a highly integrated 4x4 wireless local area network (WLAN) system-on-chip (SoC),
specifically designed to support high throughput data rates for next generation WLAN products and is part of the
Marvell Avastar family of wireless devices. The device is designed to support IEEE 802.11n/a/g/b payload data rates.
The Marvell Avastar 88W8764 provides the combined functions of Direct Sequence Spread Spectrum (DSSS), Orthogo-
nal Frequency Division Multiplexing (OFDM), and Multiple Input, Multiple Output (MIMO) baseband modulation, Medium
Access Controller (MAC), on-chip CPU, memory, host interfaces, and direct-conversion WLAN RF radio on a single
integrated chip.
The device supports 802.11n Beamformer and Beamformee functionality, enabling a simplified, integrated solution.
When combined with other Marvell solutions, significant range and throughput performance can be achieved.
For security, the 88W8764 supports 802.11i security standards through implementation of the Advanced Encryption
Standard (AES)/Counter Mode CBC-MAC Protocol (CCMP), Wired Equivalent Privacy (WEP) with Temporal Key Integrity
Protocol (TKIP), Advanced Encryption Standard (AES)/Cipher-Based Message Authentication Code (CMAC), and WLAN
Authentication and Privacy Infrastructure (WAPI) security mechanisms.
For video, voice, and multimedia applications, 802.11e Quality of Service (QoS) is supported. Also supported are
802.11h Dynamic Frequency Selection (DFS) for detecting radar pulses when operating in the 5 GHz band.
The device is also equipped with a coexistence interface for external, co-located 2.4 GHz radios.
The 88W8764 supports a PCI Express v1.1 interface and is available in a 231-pin (12x12) TFBGA package option.
BLOCK DIAGRAM
88W8764
JTAG
CPU / Memory
CPU
Boot ROM
CPU
Interface
Interrupts
C
Timers
P
U
B
U
SRAM
S
Encryption
WLAN MAC / Baseband
I
N
T
E
R
N
A
L
B
U
S
(Gbus)
802.11 MAC
Rx/Tx
802.11
Baseband
(DSSS, OFDM,
MIMO)
Coexistence
Arbiter
802.11n
Beamform
802.11n
Beamform
Direct- Conversion Radio
WLAN RF
4x4 MIMO
3-Wire, 4-Wire Serial
Serial EEPROM
UART
GPIO
Peripheral Bus
Clocked
Serial Unit
UART
GPIO
Peripheral
Bus
Bus Unit
DMA
Host Interface
PCI Express
PHY
Common Analog
Common
Analog Unit
Fig 1. Avastar 88W8764 SoC Block Diagram
T/R Switch
Path A
2.2/5 GHz WLAN Tx/Rx
T/R Switch
Path B
2.4/5 GHz WLAN Tx/Rx
T/R Switch
Path C
2.4/5 GHz WLAN Tx/Rx
T/R Switch
Path D
2.4/5 GHz WLAN Tx/Rx
XTAL_IN
XTAL_OUT
Coexistence Interface
(external, co-located 2.4 GHz radio)
PCIe