Abstract The document discusses an ADSL (Asymmetric Digital Subscriber Line) line card project for broadband access. ADSL line card is a module installed at ATU-C side (ADSL Transmission Unit, Central), which provides ADSL line interface and PHY (Physical layer) mulitplex function. The document also describes the functional blocks on this card and focuses on the design of two sections: the control FPGA (Field-programmable gate array) and the LVDS (Low Voltage Differential Signaling) serial...

Abstract

Integrated Circuit design with Hardware Description Languages improves productivity and provides flexibility. A new CPU is designed with its own instruction set. Verilog HDL is used to build a behavioral model of the CPU. Validation of the model is performed using simulation. The CPU is synthesized for a Xilinx FPGA and the netlist generated in the Xilinx format.

Abstract Application such as data communications and signal processing require extensive processing power, but when the DSP processing power is not sufficient, the only alternatives have been to add multiple DSP processors or use custom gate arrays. Multiple processor solutions are expensive, require many components, consume too much power and the solution does not always provide the performance needed to differentiate products. Custom gate array solutions deliver the performance but sacrifice...

Abstract Wireless communication testing occurs at baseband, intermediate, and radio frequencies. Chipsets that reside in base stations and mobile stations typically utilize baseband frequencies for signal processing of call set-ups and provided dedicated channels such as pilot, paging, synchronization, traffic, and data. These signals must be converted to radio frequency before they are transmitted to the wireless channel and received by the mobile station (forward link) or the base station...

Abstract Todays, [sic] expanded demand for digital signal processors (DSPs) require them to perform at higher and higher data rates. Many of the existing commercial available general purpose DSPs with their generic mulitply and add structure do not adequately meet this high data rate signal processing requirement. However, recent advances in higher density and faster field programmable gate arrays (FPGAs) have shown that, as configurable digital signal processing...