EPCS-500工控機主板是廣州致遠電子有限公司采用Intel EP80579做為處理器設計的工控機主板。該主板接口豐富，處理能力強大，支持Red Hat Enterprise Linux*5和Microsoft Windows XP* Embedded SP2等操作系統(tǒng)，可在-45°C～85°C工業(yè)級溫度范圍內穩(wěn)定工作，可以滿足各種苛刻環(huán)境，適用于工業(yè)控制，現(xiàn)場通信及軌道交通。
The LPC1769/68/67/66/65/64 are ARM Cortex-M3 based microcontrollers for Embedded applications featuring a high level of integration and low power consumption. The ARM Cortex-M3 is a next generation core that offers system enhancements such as enhanced debug features and a higher level of support block integration.
EPCS-500工控機主板是廣州致遠電子有限公司采用Intel EP80579做為處理器設計的工控機主板。該主板接口豐富，處理能力強大，支持Red Hat Enterprise Linux*5和Microsoft Windows XP* Embedded SP2等操作系統(tǒng)，可在-45°C～85°C工業(yè)級溫度范圍內穩(wěn)定工作，可以滿足各種苛刻環(huán)境，適用于工業(yè)控制，現(xiàn)場通信及軌道交通
基于單DSP的VoIP模擬電話適配器研究與實現(xiàn):提出和實現(xiàn)了一種新穎的基于單個通用數(shù)字信號處理器(DSP)的VoIP模擬電話適配器方案。DSP的I/O和存儲資源非常有限，通常適于運算密集型應用，不適宜控制密集型應用[5]。該系統(tǒng)高效利用單DSP的I/O和片內外存儲器資源，采用μC/OS-II嵌入式實時操作系統(tǒng)，支持SIP和TCP-UDP/IP協(xié)議，通過LAN或者寬帶接入，使普通電話機成為Internet終端，實現(xiàn)IP電話。該系統(tǒng)軟硬件結構緊湊高效，運行穩(wěn)定，成本低，具有廣闊的應用前景。關鍵詞：模擬電話適配器；IP電話；數(shù)字信號處理器；μC/OS-II
【Abstract】This paper presents a VoIP ATA solution based on a single digital signal processor (DSP). DSPs are suitable for arithmetic-intensiveapplication and unsuitable for control-intensive application because of the limitation of I/O and memory resources. This solution is based on a 16-bitfixed-point DSP and μC/OS-II Embedded real-time operating system. It makes good use of the limited resources, supports SIP and TCP-UDP/IPprotocol. It can connect the analog telephone to Internet and realize the VoIP application. This system has a great future for its high efficiency andlow cost.【Key words】Analog telephone adapter (ATA); Voice over Internet protocol (VoIP); Digital signal processor (DSP); μC/OS-II
Research and Implementation of VoIPATA Based on Single DSP
The XA-S3 is a member of Philips Semiconductors’ XA (eXtended Architecture) family of high performance 16-bit single-chip Microcontrollers. The XA-S3 combines many powerful peripherals on one chip. Therefore, it is suited for general multipurpose high performance Embedded control functions.One of the on-chip peripherals is the I2C bus interface. This report describes worked-out driver software (written in C) to program / use the I2C interface of the XA-S3. The driver software, together with a demo program and interface software routines offer the user a quick start in writing a complete I2C - XAS3 system application.
