16乘16点阵显示综合设计报告.docx
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16乘16点阵显示综合设计报告
一、方案设计
本设计大概包括时钟源、CPLD芯片，显示器。
此次实验所用的可编程逻辑器件的主芯片为EPF10K10LC84-3。
通过VHDL语言进行编程分别把程序模块进行编译仿真。
所编的十六进制计数器控制花样信号对字符库进行选择，计数器产生的花样信号和时钟信号共同控制行选信号和列选信号（列选频率一定要比字选频率大很多）把相应的值输入点阵，控制显示器显示相应的字符。
时钟源信号要高于24HZ。
所分模块有：
1、字选模块：
为十六进制计数器模块，其时钟源信号要比列选信号小得多。
2、列选信号：
通过给定的时钟信号用来选中列，再对列进行扫描。
3、显示模块：
经过字选信号和列选信号输出十六位二进制用来显示一行。
4、顶层模块：
该模块采用图形模式（图3），把所有模块按要求连接起来，再加上顶层输入信号。
二、实验原理
16×16扫描LED点阵的工作原理同8位扫描数码管类似。
它有16个共阴极输出端口，每个共阴极对应有16个LED显示灯。
所以其扫描译码地址需4位信号线。
2864E2PROM存贮器是电可擦除/编程的只读存贮器，容量为8k×8bit,有13位并行地址线和8位并行数据线，而一个完整的字符所需的存贮容间为32字节即32×8bit，也就是说2864最多可连续存256个16×16点阵字形。
存贮方式可事先约定好。
本实验就是要通过CPLD芯片产生读时序，将字形从2864中读出，然后产生写时序，写入16×16的点阵，使其扫描显示输出。
三、单元电路设计
1）十六进制计数器
用VHDL语言十六进制计数器进行设计，程序如下：
LIBRARYieee;
USEieee.std_logic_1164.all;
USEieee.std_logic_unsigned.all;
ENTITYJISHUIS
PORT（CLK,RST,LOAD:
INSTD_LOGIC;
DIN:
INSTD_LOGIC_VECTOR（3DOWNTO0）;
DOUT:
BUFFERSTD_LOGIC_VECTOR（3DOWNTO0））;
ENDJISHU;
ARCHITECTURESHILIUOFJISHUIS
BEGIN
PROCESS（CLK,RST,LOAD,DIN）
BEGIN
IF（CLK'EVENTANDCLK='1'）THEN
IF（RST='1'）THENDOUT<=（OTHERS=>'0'）;
ELSIF（LOAD='1'）THENDOUT<=DIN;
ELSIF（DOUT=8）THEN
DOUT<="0000";
ELSE
DOUT<=DOUT+1;
ENDIF;
ENDIF;
ENDPROCESS;
ENDSHILIU;
设计完成后，器件图如图1
图1十六进制计数器
2）对行列控制模块进行及字库进行设计
行列控制模块进行及字库程序如下：
libraryieee;
useieee.std_logic_1164.all;
useieee.std_logic_unsigned.all;
entityzhiis
port（din:
instd_logic_vector（3downto0）;
selout:
bufferstd_logic_vector（3downto0）;
clk,rst:
instd_logic;
dotout:
outstd_logic_vector（15downto0））;
endzhi;
architectureoneofzhiis
begin
process（clk,rst,din,selout）
variableb:
std_logic_vector（15downto0）;
begin
ifrst='1'thenselout<="0000";
elsifclk'eventandclk='1'then
casedinis
when"0000"=>selout<=selout+1;
caseseloutis
when"1111"=>b:
="0000000000000000";
when"0000"=>b:
="0010001000011100";
when"0001"=>b:
="0001000100001000";
when"0010"=>b:
="0000100010010000";
when"0011"=>b:
="0000000000100010";
when"0100"=>b:
="0011100001000100";
when"0101"=>b:
="0001000000001000";
when"0110"=>b:
="0001000000010000";
when"0111"=>b:
="0111111111100000";
when"1000"=>b:
="0111111111111100";
when"1001"=>b:
="0001000000000100";
when"1010"=>b:
="0001010000000100";
when"1011"=>b:
="0001100000000100";
when"1100"=>b:
="0011000000000100";
when"1101"=>b:
="0000000000011100";
whenothers=>b:
="0000000000000000";
endcase;
when"0001"=>selout<=selout+1;
caseseloutis
when"1111"=>b:
="0000000000000000";
when"0000"=>b:
="0000000000000000";
when"0001"=>b:
="0000000110000000";
when"0010"=>b:
="0000001100000000";
when"0011"=>b:
="0000011000000000";
when"0100"=>b:
="0000110000010000";
when"0101"=>b:
="0000000000001000";
when"0110"=>b:
="0111111111111100";
when"0111"=>b:
="0111111111111110";
when"1000"=>b:
="0000000000000000";
when"1001"=>b:
="0000110000000000";
when"1010"=>b:
="0000011000000000";
when"1011"=>b:
="0000001100000000";
when"1100"=>b:
="0000000110000000";
when"1101"=>b:
="0000000000000000";
whenothers=>b:
="0000000000000000";
endcase;
when"0010"=>selout<=selout+1;
caseseloutis
when"1111"=>b:
="0000000000000000";
when"0000"=>b:
="0000000000000110";
when"0001"=>b:
="0001100000000110";
when"0010"=>b:
="1001100000000110";
when"0011"=>b:
="1101100110000110";
when"0100"=>b:
="0111100110000110";
when"0101"=>b:
="0011100110000110";
when"0110"=>b:
="0001100110000110";
when"0111"=>b:
="0001100110000110";
when"1000"=>b:
="0011100110000110";
when"1001"=>b:
="0111100110000110";
when"1010"=>b:
="1101100110000110";
when"1011"=>b:
="1001100000000110";
when"1100"=>b:
="0001100000000110";
when"1101"=>b:
="0000000000000110";
whenothers=>b:
="0000000000000000";
endcase;
when"0011"=>selout<=selout+1;
caseseloutis
when"1111"=>b:
="0000000000000000";
when"0000"=>b:
="0000000000000100";
when"0001"=>b:
="0000000000001100";
when"0010"=>b:
="0001000000011100";
when"0011"=>b:
="0101011011110000";
when"0100"=>b:
="0101011101100000";
when"0101"=>b:
="0101010110000000";
when"0110"=>b:
="1111010111111111";
when"0111"=>b:
="0101010111111110";
when"1000"=>b:
="0101010101100100";
when"1001"=>b:
="0101011000110000";
when"1010"=>b:
="0001000000011000";
when"1011"=>b:
="0000000000001100";
when"1100"=>b:
="0000000000000100";
when"1101"=>b:
="0000000000000000";
whenothers=>b:
="0000000000000000";
endcase;
when"0100"=>selout<=selout+1;
caseseloutis
when"0000"=>b:
="0000000000011000";
when"0001"=>b:
="0000011000110000";
when"0010"=>b:
="0110011011000000";
when"0011"=>b:
="0111111111111100";
when"0100"=>b:
="0111111111111110";
when"0101"=>b:
="0110011110000000";
when"0110"=>b:
="0000011011100000";
when"0111"=>b:
="0000000001100000";
when"1000"=>b:
="0000000000000000";
when"1001"=>b:
="0000011111110000";
when"1010"=>b:
="0000011111100000";
when"1011"=>b:
="0000000000001000";
when"1100"=>b:
="0111111111111100";
when"1101"=>b:
="0111111111111110";
when"1110"=>b:
="0000000000000000";
whenothers=>b:
="0000000000000000";
endcase;
when"0101"=>selout<=selout+1;
caseseloutis
when"0000"=>b:
="0000000000000000";
when"0001"=>b:
="0000111000000010";
when"0010"=>b:
="0000111000000110";
when"0011"=>b:
="0000100110001000";
when"0100"=>b:
="0000100110010110";
when"0101"=>b:
="0000100110101110";
when"0110"=>b:
="0110100111010110";
when"0111"=>b:
="0110101110100110";
when"1000"=>b:
="0110100110000110";
when"1001"=>b:
="0000100110010110";
when"1010"=>b:
="0000100110001110";
when"1011"=>b:
="0000100110000110";
when"1100"=>b:
="0000111000000110";
when"1101"=>b:
="0000111000000010";
when"1110"=>b:
="0000000000000000";
whenothers=>b:
="0000000000000000";
endcase;
when"0110"=>selout<=selout+1;
caseseloutis
when"1111"=>b:
="0000000000000000";
when"0000"=>b:
="0000000000000010";
when"0001"=>b:
="0110000000000110";
when"0010"=>b:
="0110000110000110";
when"0011"=>b:
="0110000110000110";
when"0100"=>b:
="0110000110000110";
when"0101"=>b:
="0110000110000110";
when"0110"=>b:
="0111111111111110";
when"0111"=>b:
="0111111111111110";
when"1000"=>b:
="0110000110000110";
when"1001"=>b:
="0110000110000110";
when"1010"=>b:
="0110000110000110";
when"1011"=>b:
="0110000110000110";
when"1100"=>b:
="0110000000000110";
when"1101"=>b:
="0000000000000010";
whenothers=>b:
="0000000000000000";
endcase;
when"0111"=>selout<=selout+1;
caseseloutis
when"0000"=>b:
="0000000000100100";
when"0001"=>b:
="0010001000011000";
when"0010"=>b:
="0010010100011000";
when"0011"=>b:
="0010110010100100";
when"0100"=>b:
="0011000001001010";
when"0101"=>b:
="0010010010101010";
when"0110"=>b:
="0010010010101010";
when"0111"=>b:
="0010010010101010";
when"1000"=>b:
="0111111111111110";
when"1001"=>b:
="0010010010101010";
when"1010"=>b:
="0010010010101010";
when"1011"=>b:
="0010010010101010";
when"1100"=>b:
="0011111110001010";
when"1101"=>b:
="0000010000001010";
when"1110"=>b:
="0000010000000010";
whenothers=>b:
="0000000000000000";
endcase;
when"1000"=>selout<=selout+1;
caseseloutis
when"0000"=>b:
="0000000001111100";
when"0001"=>b:
="0000100011000000";
when"0010"=>b:
="0010100100100000";
when"0011"=>b:
="0010101000010000";
when"0100"=>b:
="0111111111001000";
when"0101"=>b:
="0010100100000100";
when"0110"=>b:
="0010100100000010";
when"0111"=>b:
="0000100000000010";
when"1000"=>b:
="0000000000000010";
when"1001"=>b:
="0100010001110010";
when"1010"=>b:
="0100100010001010";
when"1011"=>b:
="0101000010001010";
when"1100"=>b:
="0110010010001010";
when"1101"=>b:
="0111111001110010";
when"1110"=>b:
="0000000000000000";
whenothers=>b:
="0000000000000000";
endcase;
when"1001"=>selout<=selout+1;
caseseloutis
when"1111"=>b:
="0000111100001111";
when"0000"=>b:
="0000111100001111";
when"0001"=>b:
="0000111100001111";
when"0010"=>b:
="0000111100001111";
when"0011"=>b:
="1111000011110000";
when"0100"=>b:
="1111000011110000";
when"0101"=>b:
="1111000011110000";
when"0110"=>b:
="1111111111110000";
when"0111"=>b:
="0000111100001111";
when"1000"=>b:
="0000111100001111";
when"1001"=>b:
="0000111100001111";
when"1010"=>b:
="0000111100001111";
when"1011"=>b:
="1111000011110000";
when"1100"=>b:
="1111000011110000";
when"1101"=>b:
="1111000011110000";
when"1110"=>b:
="1111000011110000";
whenothers=>null;
endcase;
when"1010"=>selout<=selout+1;
caseseloutis
when"1111"=>b:
="1111000011110000";
when"0000"=>b:
="1111000011110000";
when"0001"=>b:
="1111000011110000";
when"0010"=>b:
="1111000011110000";
when"0011"=>b:
="0000111100001111";
when"0100"=>b:
="0000111100001111";
when"0101"=>b:
="0000111100001111";
when"0110"=>b:
="0000111100001111";
when"0111"=>b:
="1111000011110000";
when"1000"=>b:
="1111000011110000";
when"1001"=>b:
="1111000011110000";
when"1010"=>b:
="1111000011110000";
when"1011"=>b:
="0000111100001111";
when"1100"=>b:
="0000111100001111";
when"1101"=>b:
="0000111100001111";
when"1110"=>b:
="0000111100001111";
whenothers=>null;
endcase;
when"1011"=>selout<=selout+1;
caseseloutis
when"1111"=>b:
="0000000011111111";
when"0000"=>b:
="0000000011111111";
when"0001"=>b:
="0000000011111111";
when"0010"=>b:
="0000000011111111";
when"0011"=>b:
="0000000011111111";
when"0100"=>b:
="0000000011111111";
when"0101"=>b:
="0000000011111111";
when"0110"=>b:
="0000000011111111";
when"0111"=>b:
="1111111100000000";
when"1000"=>b:
="1111111100000000";
whe
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