最近在把Quartus Prime 15.1的工程移植到Vivado 2019.1,需要改变的地方还是很多的,先记一下差分信号在FPGA中的收发管脚定义和配置.以LVDS信号为例吧. 在7 Series FPGA & ZYNQ-7000 All Programmable SoC Library Guide for HDL Design(UG768)和7 Series FPGA SelectIO Resource(UG471)文档里面给出了HDL文件进行管脚分配的办法: 用OBUFDS原语(Pri
ERROR:Place:1108 - A clock IOB / BUFGMUX clock component pair have been found that are not placed at an optimal clock IOB / BUFGMUX site pair. The clock IOB component <Clk_125M> is placed at site <PAD99>. The corresponding BUFG component
1.Incompatible IOB's are locked to the same bank 15,具体如右图, 于是去查引脚配置,发现 也就是说,在bank=15的这组IO里面,我既选了LVAMOS18,又选了33*,而它俩分别是不同的电平,具体各自是多少我不知道,反正,同一个bank组的IO只能用同一个电平,所以这里我把CMOS18改成33*,就消除了这个error. -------------------------------------------------***********