SX1441EVK Semtech, SX1441EVK Datasheet - Page 5

• Manufacturer Part Number: SX1441EVK
• Description: KIT DEV FOR SX1441
• Manufacturer: Semtech
• Series: EasyBlue™r
• Type: Bluetoothr

Specifications of SX1441EVK

• For Use With/related Products: SX1441
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Contents: -
• Other names: SX1441DVK; SX1441DVK

Personal Area Network
1 APPLICATION INFORMATION – SX1441-BASED SYSTEM LEVEL BLOCK DIAGRAM
The Semtech SX1441, a member of the EasyBlue™ family, is based on a unique Embedded-Host architecture
which enables any data or voice application to be enhanced with ultra low power Bluetooth technology, with low
risk and a short development time.
The core of the SX1441 is the Semtech ROM-based Bluetooth sequencer combined with an embedded 8-bit RISC
microcontroller and several standard peripherals such as GPIO, high speed UART, audio CODEC, and a power
management unit. The Bluetooth sequencer executes the lower layers of the Bluetooth stack, while the
microcontroller runs the application and the higher levels of the protocol. Since the sequencer and the
microcontroller are independent, the effort required for validation and qualification of the Bluetooth protocol is
greatly decreased.
A typical wireless headset block diagram using the SX1441 is shown in Figure 1. The on-chip CODEC is
connected with a microphone and a speaker. The Serial Peripheral Interface (SPI) directly interfaces to an external
Flash memory. This memory stores the application and the upper layers of the Bluetooth protocol stack which are
loaded at boot-up time, and then executed by the on-chip application processor.
Fully programmable General Purpose Input/Output ports (GPIO) are available to interface push-buttons, LED’s or
other peripherals. The high speed UART supports hardware flow control and data rates up to 921kbit/s.
The on-chip host processor runs the application software and the upper layer Bluetooth protocol stack software
while the Bluetooth sequencer handles the low level of the protocol with no intervention by the application
processor. This architecture guarantees that the real time operations of the lower levels cannot be influenced by
the application. Qualified upper layer Bluetooth protocol software from various 3
to run on the SX1441. This system architecture definitely eases the software development and Bluetooth
qualification processes and guarantees the highest flexibility. The Bluetooth qualification process for the final
application is simplified by the fact that the SX1441 uses a qualified Bluetooth ROM implementation
© Semtech 2006
Figure 1 - Bluetooth Headset Application
Semtech XE1413
Bluetooth Radio
Application
serial Flash
Processor
Sequencer
Bluetooth
Radio Interface
SPI
5
SX1441
GPIO
rd
SX1441 – Bluetooth® 1.2 SoC
party suppliers can be supplied
www.semtech.com
Data Sheet