USB-JTAG调试器

ORSoC has developed a USB to JTAG debugger, aimed at debugging OpenRISC based systems. One or more OpenRISC processors can be controlled over a JTAG interface. Additionally the debugger could be used to handle a serial connection for a console. Signal level on the JTAG is user configurable by use of an external voltage.

ORSoC设计了一个USB转JTAG的调试器，用于调试基于OpenRISC的系统。可以通过一个JTAG接口控制一个或多个OpenRISC处理器。此外，该调试器可以用来处理一个控制台的串行连接。JTAG的信号级别可以通过使用外部电源由用户进行配置。

该调试器兼容USB1.1，以方便连接到主机。本地代理服务器处理USB连接，并提供一个TCP连接到软件调试器。支持带有可选图形用户界面的GNU调试器，如DDD。

测试下用10针带状头连接到设计。调试器使用一个0.1”间距2×5针接头，使用下面的引脚：

  1. JTAG TCK
  2. GND
  3. JTAG TDO
  4. VCCIO JTAG
  5. JTAG TMS
  6. VCCIO UART
  7. UART RX
  8. UART TX
  9. JTAG TDI
  10. GND

调试器是围绕一个来自Future technologies（http://www.ftdi.com）的USB双核UART。可以用来自FTDI的开发环境开发扩展功能。

ORSoC JTAG debugger

For pricing information and orders, please visit OpenCores web shop (link).

If you are a company located in EU we recommend you to contact ORSoC directly via info@orsoc.se to avoid unnecessary costs related to VAT.