DBB03A Datasheet, PDF (1/9 Pages) Texas Instruments – Baseband ASIC for Dolphin Chipset

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FEATURES
• Low Supply Voltage Range: 1.8 V to 3.6 V
• Ultralow-Power Consumption:
– Active Mode: 160 µA at 1 MHz, 2.2 V
– Standby Mode: 0.9 µA
– Off Mode (RAM Retention) : 0.1 µA
• Contains Frequency-Hopping Firmware for
Dolphin Reference Design
• Firmware Resides in ROM-Based Program
Memory and is Fixed
• Simple UART Interface to an External
Host/System Microcontroller
• Pre-Defined Protocol for Communication with
DBB03A
Baseband ASIC for Dolphin Chipset
SWRS030 – JULY 2005
an External Host/System Microcontroller
• Five Power-Saving Modes
• Wake-Up From Standby Mode in less than 6
µs
• 16-Bit RISC Architecture, 125-ns Instruction
Cycle Time
• Serial Communication Interface (USART),
Software Selects Asynchronous UART or
Synchronous SPI
• Available in 64-Pin Quad Flat Pack (QFP)
• For Complete Dolphin Product Description,
See the Dolphin Frequency Hopping Spread
Spectrum Evaluation Kit Hardware and
Software User’s Guide (SLLU090)
DESCRIPTION
The DBB03A is a baseband ASIC for the "Dolphin" reference design. The firmware for the Dolphin reference
design resides in the ROM-based program memory of the DBB03A, and thus can be readily interfaced with a
TRF6903 single-chip RF Transceiver to generate a frequency hopping wireless UART "Dolphin" reference design
chipset. This is illustrated in Figure 1.
The DBB03A baseband ASIC in addition to being a RF baseband processor is also responsible for
communications with an external host/system micrcontroller. In a typical end user application, the Dolphin chipset
will be connected up to an external host/system microcontroller that will send configuration messages, RF
transmission messages into the Dolphin chipset, or receive status, RF messages received from the Dolphin
chipset.
Any catalog low-cost host/system microcontroller can be interfaced to the Dolphin chipset as long as the Dolphin
host interface protocol for communication is adhered to. (See Application Note Dolphin - Frequency Hopping
Spread Spectrum Chipset Host Interface Protocol TI Literature SWRA043) Texas Instruments recommends its
ultra-low power MSP430 series of microcontrollers to interface with Dolphin.
The interface between the DBB03A baseband ASIC and an external host/system microcontroller is a simple
UART consisting of RX and TX data lines. (See Application Note Interfacing Dolphin to an External System
Microcontroller, TI Literature SWRA045).
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005, Texas Instruments Incorporated