series
Marvell Avastar 88W8790 SoC
Bluetooth/FM Single-Chip SoC
PRODUCT OVERVIEW
The Marvell
®
Avastar™ 88W8790 is a highly integrated system-on-a-chip (SoC) that integrates Bluetooth and FM
radio functions. It is specifically designed to support high throughput data rates for next-generation products and
is part of the Marvell Avastar family of wireless devices. The Avastar family includes single-function and multi-
function radios that establish new industry benchmarks for power consumption, wireless performance, solution
footprint and advanced features.
The Marvell Avastar 88W8790 is designed to support Bluetooth 3.0 (also supports Bluetooth 2.1 + EDR features)
and both FM transmit and receive (digital encoder/decoder FM radio with RDS/RBDS) operation.
The 88W8790 supports generic interfaces including SDIO, SPI (G-SPI), high-speed UART, and PCM for connecting
the Bluetooth core to the host processor.
For FM Tx/Rx, the device supports Inter-IC Sound (I2S) / analog stereo audio interfaces. An I2C-compatible in-
terface is available to connect the FM Tx/Rx to the host processor, as well. The FM Tx/Rx can also share the host
interface with Bluetooth.
The device supports a coexistence interface for external, co-located 2.4 GHz radios.
The 88W8790 is available in two TFBGA package options.
BLOCK DIAGRAM
Audio Interface
I
2
S Audio Codec Interface
Audio Codec
Controller
FM Tx/Rx
FM RF Interface/
FM RF
RF Input
RF Output
Sleep Clock
Processor
JTAG Interface
Marvell
Feroceon CPU
ROM
JTAG
Power Management
CPU Interface
Bluetooth
Interrupts
Timers
Bluetooth
Baseband/RF
I
2
S/PCM
Coexistence Interface
(external co-located 2.4 GHz radio)
Power Management
XTAL_IN
XTAL_OUT
Power Down
Battery/Low Voltage LDO
Common
Analog Unit
C
P
U
LDO
Memory
SRAM
B
u
s
Peripheral Bus
Host Interfaces
SDIO
3-Wire, 4-Wire Interface
2-Wire Serial Interface
1-Wire Serial Interface
Clocked
Serial Unit
B
U
S
SDIO
Peripheral
Bus Unit
G-SPI
G-SPI
GPIO
GPIO/LED
UART
High-Speed UART
I
2
C-compatible
I
2
C-compatible (slave from Host)
Fig 1. Avastar 88W8790 SoC Block Diagram
1. Antenna can be used as an option to enhance performance
1
series
Marvell Avastar 88W8790 SoC
SPECIFICATIONS
BLUETOOTH
(continued)
•
HCI layer verified to function with major profile stack vendors
•
SCO/eSCO links with hardware accelerated audio signal processing and
hardware supported PPEC algorithm for speech quality improvement
•
All standard SCO/eSCO voice coding
•
All standard pairing, authentication, link key, and encryption operations
•
Standard Bluetooth power saving mechanisms (i.e., hold, sniff modes)
•
Enhanced low power scan mode
GENERAL FEATURES
•
Simultaneous and independent Bluetooth, and FM Tx/Rx operation
•
Coexistence with cellular and other on-chip radios
•
Low power dissipation
•
CMOS and low-swing sine wave input clock
•
Digital audio interfaces (I2S and PCM)
•
12, 13, 19.2, 24, 26, 38.4, and 52 MHz crystal clock support with auto-
frequency detection using external 32.768 KHz CMOS-level sleep clock
•
Power management with external sleep clock support for FM Tx/Rx
operation
•
Sleep and standby modes for low power operation
•
Fully compatible with Marvell Power Management device(s)
FM RADIO
•
Worldwide FM band—76–108 MHz
•
Full Tx/Rx operation with main clock as well as 32.768 kHz external
sleep clock
•
Channel spacing/frequency step size (50 kHz steps)
•
Stereo analog and digital (I2S) output for Rx
•
Stereo digital (I2S) input for Tx
•
Dynamic Transmit Power Control (TPC)
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Channel Quality Driven (CQD) data rate
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SBC off load for A2DP streaming
•
Wideband Speech Support
APPLICATIONS
•
Bluetooth/FM enabled cellular handsets
•
Portable audio/video devices and accessories
•
Personal navigation devices
•
Personal digital assistants
•
Gaming platforms
PACKAGING
•
64-pin TFBGA
FM Rx PATH
•
FM/RDS/RBDS receiver
•
Automatic frequency control (AFC)
•
Auto search tuning
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Softmute
•
Audio mute
•
Mono/stereo blending (signal dependent)
•
Digital FM demodulation
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RDS data buffer
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FM audio routed internally as SCO source
•
Programmable pre/de-emphasis (50/75 µs)
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TMC (traffic alert) supported
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Enable/disable stereo mode
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FM audio option to turn off CPU if no RDS
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Audio silence detection
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Alternate frequency
PROCESSOR
•
CPU
- Integrated Marvell Feroceon
®
CPU (ARMv5TE-compliant)
- 64 MHz maximum CPU clock speed
MEMORY
•
Internal SRAM for Tx frame queues/Rx data buffers
•
Boot ROM
•
ROM patching capability
BLUETOOTH
•
Bluetooth 3.0 (also compliant with Bluetooth 2.1 + EDR)
•
Bluetooth Class 2
•
Bluetooth Class 1
•
Single-ended, shared Tx/Rx path for Bluetooth
•
Digital audio interfaces including PCM interface for voice applications
and I2S for digital stereo applications
•
Baseband and radio BDR and EDR packet types—1 Mbps (GFSK), 2
Mbps (p/4-DQPSK),
and 3 Mbps (8DPSK)
•
Fully functional Bluetooth baseband—AFH, forward error correction,
header error control, access code correlation, CRC, encryption bit
stream generation, and whitening
•
Adaptive Frequency Hopping (AFH) including Packet Loss Rate (PLR)
•
Interlaced scan for faster connection setup
•
Simultaneous active ACL connection support
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Automatic ACL packet type selection
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Full master and slave piconet support
•
Scatternet support
•
Standard UART, G-SPI, and SDIO HCI transport layer
FM Tx PATH
•
FM/RDS/RBDS transmitter
•
RDS data buffer
•
High Tx output power (+125 dBµVrms) for loop antenna
•
Auto scan for channel selection
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Auto channel sync through RDS
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Audio mute
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Audio Automatic Gain Control (AGC)
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Compensation for 32 kHz clock error
COEXISTENCE
•
Coexistence interface for external, co-located 2.4 GHz radio
- Marvell 3/4-wire interface
- WL_ACTIVE 3/4-wire interface
- WL_ACTIVE 2-wire interface
series
Marvell Avastar 88W8790 SoC
SPECIFICATIONS
HOST INTERFACES
•
SDIO device interface (1-bit SDIO transfer mode at full clock range up
to 25 MHz)
•
G-SPI device interface
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High speed UART interface
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Optional I2C-compatible slave interface for FM control
PERIPHERAL BUS INTERFACES
•
Clocked Serial Unit (CSU)
- 3-Wire, 4-Wire Serial Interface
- 2-Wire Serial Interface
- 1-Wire Serial Interface
•
General Purpose Input Output (GPIO)
AUDIO INTERFACES
•
Audio Codec Interface
- Marvell Class D Audio Amplifier
- TWSI interface for Audio Codec programming
- I2S (Inter-IC Sound) interface for audio data connection to Digital-to-
Analog Converters (DAC)
- Master and slave mode for I2S, MSB, and LSB audio interfaces
- Tri-state I2S interface capability
•
PCM Interface
- Master or slave mode
- PCM bit width size of 8 bits or 16 bits
- Up to 4 slots with configurable bit width and start positions
- Short frame and long frame synchronization
- Tri-state PCM interface capability
TEST
•
On-chip diagnostic information
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Marvell Avastar 88W8790 SoC
THE MARVELL ADVANTAGE:
Marvell chipsets come with complete reference designs which include board layout
designs, software, manufacturing diagnostic tools, documentation, and other items to assist customers with
product evaluation and production. Marvell’s worldwide field application engineers collaborate closely with end
customers to develop and deliver new leading-edge products for quick time-to-market. Marvell utilizes world-
leading semiconductor foundry and packaging services to reliably deliver high-volume and low-cost total solutions.
ABOUT MARVELL:
Marvell is a leader in storage, communications, and consumer silicon solutions. Marvell’s diverse
product portfolio includes switching, transceiver, communications controller, processor, wireless, power management,
and storage solutions that power the entire communications infrastructure, including enterprise, metro, home, storage,
and digital entertainment solutions. For more information, visit our Web site at
www.marvell.com.
Marvell Semiconductor, Inc.
5488 Marvell Lane
Santa Clara, CA 95054
Phone 408.222.2500
www.marvell.com
Copyright © 2010. Marvell International Ltd. All rights reserved. Marvell, Moving Forward
Faster, the Marvell logo, Alaska, AnyVoltage, DSP Switcher, Fastwriter, Feroceon, Libertas,
Link Street, PHYAdvantage, Prestera, TopDog, Virtual Cable Tester, Yukon, and ZJ are
registered trademarks of Marvell or its affiliates. Armada, Avastar, CarrierSpan, LinkCrypt,
Marvell Smart, PowerSmart PFC, Powered by Marvell Green PFC, Qdeo, QuietVideo,
Sheeva, TwinD, and VCT are trademarks of Marvell or its affiliate. All other trademarks are
the property of their respective owners.
Avastar_88W8790-02 6/10
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