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 Modern microprocessors are designed to execute arithmetic and logical instructions in one clock time. Emerging microprocessors implement multimedia instructions as part of the Instruction Set Architecture (ISA) and expect to run them in a single clock cycle. Designing circuits to implement multi-media instructions that execute in a single clock cycle poses a serious challenge to microprocessor designers. Sustained performance of the Arithmetic and Logic Unit (ALU) is very critical to the...