Coefficient set 1 : 2 3 4 5 4 3 2; 则同时输入的coe文件就会是: Coefficient :1 2 3 4 3 2 1 2 3 4 5 4 3 2; 并且需要将Numberof Coefficient sets设置为2。而后,直接在config信道上选择系数的组别就好。 若系数长度相差太多,就可以用reload来重载系数。 本文转自:Xilinx FIR IP core滤波器系数...
最近用到系数可以重新配置的fir滤波器，调用xilinx提供的ip core，使用了use reloadable coefficient功能，但有以下几点疑问，哪位有用过的大虾能否指点迷津下 1、使用use coefficients reloadable之后，仍需导入.coe文件，这个文件的作用是什么，此时滤波器系数不是由coe_din输入了吗？ 2、number of coefficient sets的...
For every new sample entering the filter, N multiply operations will be performed, each multiplying the filter coefficient by the respective input sample. The result of each multiply oper- ation is added to the partial result storage to produce a new partial result. This newly calculated par- ...
To achieve implementation of high speed processors, the main processing bottlenecks are the MAC unit, digital filters, which greatly depends on the multiplier, and which greatly depends on the number of multiplication and adder units. In this paper we have proposed an improved time, less ...
Structure in the coefficient set is exploited to produce area-efficient FPGA implementations. Sufficient arithmetic precision is employed in the internal data path to avoid the possibility of overflow. The conventional single-rate FIR version of the core computes the convolution sum defined in Equation...
For example, in a 32-tap FIR imple- mentation, the Virtex-4 FPGA outperforms competing devices by 40%. On-Chip Memory Performance The Virtex-4 family carries forward the size and basic structure of on-chip memory, 18 Kb dual-port block RAM (proven in previ- ous generations), but adds...
Number of Coefficient Sets多个系数集,对于多系数过滤器,单个.coe文件用于指定系数集。 每个系数集应附加到前一组系数。我们这里没有使用。 Number of Coefficients (per set)系数数量(每组):每个滤波器组的滤波器系数数量。自动计算。 Use Reloadable Coefficients使用可重新加载的系数:当选择重新加载选项时,在核心上...
For example, in a 32-tap FIR imple- mentation, the Virtex-4 FPGA outperforms competing devices by 40%. On-Chip Memory Performance The Virtex-4 family carries forward the size and basic structure of on-chip memory, 18 Kb dual-port block RAM (proven in previ- ous generations), but adds...
SIMs target a specified FPGA according to specified parameters that may, for example, include the required timing, data width, number of taps for a FIR filter, and so forth. SIMs are called “self implementing” because they encapsulate much of their own implementation information, including mappi...
FIG. 5B is a table illustrating the function of the FIR filter of FIG. 5A. FIG. 5C (prior art) is a block diagram of a conventional DSP element adapted to instantiate an 18-bit, four-tap FIR filter. FIG. 5D (prior art) is a block diagram of an 18-bit, eight-tap FIR filter...