唐山网站托管,山西网站建设找哪家,网站建设中 动画,杭州seo推广服务1.开发板
核心板#xff0c;主芯片GW1NSR-LV4CQN48P#xff0c;丝印文字“奥陶纪Octet#xff0c;QQ群808770961”#xff1a;
晶振#xff1a;27MHz#xff0c;22引脚
两个按键#xff1a;靠近中间#xff0c;23引脚#xff0c;按下为低电平#xff1b;靠近外侧主芯片GW1NSR-LV4CQN48P丝印文字“奥陶纪OctetQQ群808770961”
晶振27MHz22引脚
两个按键靠近中间23引脚按下为低电平靠近外侧20引脚按下为低电平
靠近USB接口右侧6针为JTAG接口引脚定义为左侧丝印文字在6针下侧有4个拨码开关“on”位置对板载FPGA编程。
底板丝印文字“Mini_Star Basic Experiment Board”
8个LED低电平亮
数码管段码低电平亮
数码管位码高电平选中
拨码开关(SW)拨上高电平拨下低电平
按键(KEY)不按高电平按下低电平
2.IDE软件
版本要求1.9.9及以上下载地址广东高云半导体科技股份有限公司 (gowinsemi.com.cn)
3.示例
点灯程序以FPGA内部集成210Mhz振荡器作为时钟源利用OSC核
module Gowin_OSC (Q);
output reg[7:0] Q;
reg [11:0] cnt;OSCZ osc_inst (.OSCOUT(oscout),.OSCEN(1b1)
);defparam osc_inst.FREQ_DIV 128; //210M经此分频后约1.64M
defparam osc_inst.S_RATE SLOW;always(posedge oscout )cntcnt1b1;always(posedge cnt[11] )QQ1b1;
endmodule //Gowin_OSC
引脚约束
IO_LOC Q[7] 34;
IO_PORT Q[7] PULL_MODENONE DRIVE8;
IO_LOC Q[6] 35;
IO_PORT Q[6] PULL_MODENONE DRIVE8;
IO_LOC Q[5] 31;
IO_PORT Q[5] PULL_MODENONE DRIVE8;
IO_LOC Q[4] 32;
IO_PORT Q[4] PULL_MODENONE DRIVE8;
IO_LOC Q[3] 29;
IO_PORT Q[3] PULL_MODENONE DRIVE8;
IO_LOC Q[2] 30;
IO_PORT Q[2] PULL_MODENONE DRIVE8;
IO_LOC Q[1] 27;
IO_PORT Q[1] PULL_MODENONE DRIVE8;
IO_LOC Q[0] 28;
IO_PORT Q[0] PULL_MODENONE DRIVE8;
利用PLL实现的时钟为27M。
module Gowin_PLLVR (Q, clkin);
output reg[7:0] Q;
input clkin; //27Mwire lock_o;
wire clkoutp_o;
wire clkoutd_o;
wire clkoutd3_o;
wire gw_vcc;
wire gw_gnd;reg [11:0] cnt;assign gw_vcc 1b1;
assign gw_gnd 1b0;PLLVR pllvr_inst ( //5.4M输出.CLKOUT(clkout),.LOCK(lock_o),.CLKOUTP(clkoutp_o),.CLKOUTD(clkoutd_o),.CLKOUTD3(clkoutd3_o),.RESET(gw_gnd),.RESET_P(gw_gnd),.CLKIN(clkin),.CLKFB(gw_gnd),.FBDSEL({gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd}),.IDSEL({gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd}),.ODSEL({gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd,gw_gnd}),.PSDA({gw_gnd,gw_gnd,gw_gnd,gw_gnd}),.DUTYDA({gw_gnd,gw_gnd,gw_gnd,gw_gnd}),.FDLY({gw_gnd,gw_gnd,gw_gnd,gw_gnd}),.VREN(gw_vcc)
);defparam pllvr_inst.FCLKIN 27;
defparam pllvr_inst.DYN_IDIV_SEL false;
defparam pllvr_inst.IDIV_SEL 4;
defparam pllvr_inst.DYN_FBDIV_SEL false;
defparam pllvr_inst.FBDIV_SEL 0;
defparam pllvr_inst.DYN_ODIV_SEL false;
defparam pllvr_inst.ODIV_SEL 112;
defparam pllvr_inst.PSDA_SEL 0000;
defparam pllvr_inst.DYN_DA_EN true;
defparam pllvr_inst.DUTYDA_SEL 1000;
defparam pllvr_inst.CLKOUT_FT_DIR 1b1;
defparam pllvr_inst.CLKOUTP_FT_DIR 1b1;
defparam pllvr_inst.CLKOUT_DLY_STEP 0;
defparam pllvr_inst.CLKOUTP_DLY_STEP 0;
defparam pllvr_inst.CLKFB_SEL internal;
defparam pllvr_inst.CLKOUT_BYPASS false;
defparam pllvr_inst.CLKOUTP_BYPASS false;
defparam pllvr_inst.CLKOUTD_BYPASS false;
defparam pllvr_inst.DYN_SDIV_SEL 2;
defparam pllvr_inst.CLKOUTD_SRC CLKOUT;
defparam pllvr_inst.CLKOUTD3_SRC CLKOUT;
defparam pllvr_inst.DEVICE GW1NSR-4C;always(posedge clkout )cntcnt1b1;always(posedge cnt[11] )QQ1b1;endmodule //Gowin_PLLVR
引脚约束在以上基础上增加clkin
IO_LOC clkin 22;
IO_PORT clkin PULL_MODEUP;
