Rabbit BL4S200单板计算机无线连接方案

Rabbit 公司的BL4S200是能提供无线连接的单板计算机,如以太网和快速以太网,WiFi和ZigBee连接等. BL4S200采用Rabbit 5000和4000微处理器,提供了工业应用的全特性的控制和通信解决方案. BL4S200有以太网,,WiFi和ZigBee连接的选择.有40个数字IU/O和多达5个串行端口,8个模拟输入和2个模拟输出通路,可用在无线工业控制,视频系统,自动读表系统,保密连接和数据采集.本文介绍了Rabbit 5000微处理器的架构和主要特性,以及单板计算机BL4S200的主要特性,和详细电路图.

The Rabbit 5000 is the next generation of Rabbit microprocessors designed specifically for embedded control, communications, and network connectivity. Extensive integrated features facilitate rapid hardware design, while a C-friendly instruction set promotes efficient development of even the most complex applications.
The Rabbit 5000 is the first Rabbit microprocessor to have 16-bit internal bus architecture, providing significant performance improvements when used with external 16-bit memory devices. It also has the ability to support both 8-bit and 16-bit external memory devices.
Rabbit 5000 Microprocessor Architecture
Up to 100 MHz operation
Support for up to 16 MB of memory
24-bit address bus, 8-bit or 16-bit data bus
128 KB of internal high-speed 16-bit SRAM
1.8 V core and 3.3 V I/O
8 DMA channels
6 serial ports
The Rabbit 5000 provides two options for network connectivity — a full 10/100Base-T Ethernet MAC with a standard MII PHY interface, and a wireless 802.11b/g MAC compatible with several standard Wi-Fi transceivers.
Rabbit 5000 Microprocessor Features
The Rabbit 5000 contains an 802.11b/g wireless MAC peripheral that includes support for all standard Wi-Fi features, including infrastructure and ad-hoc modes. The high-speed internal A/D converter and D/A converter and clocked-serial control port provide a generic interface to several common Wi-Fi transceivers. A low-speed A/D converter is also available to monitor the transmit signal strength if desired. The two A/D converters and single D/A converter are available for customer use when the Wi-Fi peripheral is disabled.
The Rabbit 5000 offers many specialized peripherals, including:
Eight channels of DMA access to internal or external memory, internal I/O addresses, and the external I/O bus Two input capture channels each with a 16-bit counter used for a variety of functions such as measuring pulse widths, or for baud rate auto-detection
Two quadrature decoder channels which provide a direct interface to optical encoder units
Four independent pulse width modulator (PWM) outputs, which can drive devices such as motors or solenoids, or can be filtered to create a 10-bit D/A converter
The Rabbit 5000 also provides support for protected operating systems. Support for two levels of operation - known as system and user modes - allow application-critical code to operate in safety while user code is prevented from inadvertently disturbing the setup of the processor. Memory blocks as small as 4 KB can be write-protected against accidental writes by user code, and stack over/underflows can be trapped by high-priority interrupts.
Security features are also available in the Rabbit 5000. Portions of the new instruction set were introduced to increase encryption algorithm speeds dramatically, and 32 bytes of battery-backed RAM can store an encryption key away from prying eyes.

Rabbits BL4S200 series of single-board computers deliver the features and wireless connectivity to support networking for industrial control applications. In addition to the Ethernet and Fast Ethernet versions, the BL4S200 offers a choice of Wi-Fi and ZigBee enabled wireless networking options. The BL4S200 provides reliable hardware that has been certified by the FCC and other international agencies.

Rabbit’s BL4S200 single-board computers offer a full-featured control and communications solution for industrial applications. The BL4S200 series is designed to provide the microprocessor control and I/O used for reading instruments, timing events precisely, and controlling motors, relays, and solenoids.
The BL4S200 series of single-board computers offers you an I/O rich, robust, and reliable SBC upon which to develop your embedded control solution. Your design effort, cost, and time will be significantly reduced.
BL4S200主要特性:

Uses Rabbit® 4000 and Rabbit 5000 Microprocessors
Choice of Wi-Fi, ZigBee enabled, or Ethernet connectivity
Friction lock connectors
RabbitNet Compatible
40 digital I/O
Up to 5 serial ports
Battery-backed real-time clock
Watchdog supervisor
analog input channels and 2 analog output channels
Design Advantages
Deploy known-good hardware for Wi-Fi connectivity
Develop an intelligent ZigBee enabled device in a mesh network
Use Dynamic C integrated development environment to minimize time and risk in your embedded design
Advanced input capabilities including event counting, event capture, and quadrature decoders to ease development for robust industrial applications
Use RabbitNet protocol to connect expansion devices
Applications
Wireless industrial control
Vision systems
Automatic meter reading
Encrypted connectivity
Data logging



图1. BL4S200外形图
Development and Evaluation Tools
The BL4S200 Tool Kit contains the essential hardware to develop an embeddedapplication on a BL4S200 single-boardcomputer and debug right on the targethardware.

The Tool Kit includes:
Dynamic C CD-ROM, with complete product documentation on disk
Printed getting started manual and Rabbit 4000/5000 Posters
Demonstration Board with pushbutton switches and LED’s to demonstrate the I/O and TCP/IP capabilities of the BL4S200
USB programming cable, used to connect the BLS4200 to your PC USB port
Universal AC adapter, 12 V DC, 1 A (includes Canada/Japan/U.S., Australia/N.Z., U.K., and European style plugs



图2. BL4S200电路图(1)



图3. BL4S200电路图(2)



图4. BL4S200电路图(3)



图5. BL4S200电路图(4)



图6. BL4S200电路图(5)



图7. BL4S200电路图(6)