📄 usb1_rom1.v
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///////////////////////////////////////////////////////////////////////// //////// Descriptor ROM //////// //////// //////// Author: Rudolf Usselmann //////// rudi@asics.ws //////// //////// //////// Downloaded from: http://www.opencores.org/cores/usb1_funct///////// ///////////////////////////////////////////////////////////////////////////// //////// Copyright (C) 2000-2002 Rudolf Usselmann //////// www.asics.ws //////// rudi@asics.ws //////// //////// This source file may be used and distributed without //////// restriction provided that this copyright statement is not //////// removed from the file and that any derivative work contains //////// the original copyright notice and the associated disclaimer.//////// //////// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY //////// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED //////// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS //////// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR //////// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, //////// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES //////// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE //////// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR //////// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF //////// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT //////// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT //////// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE //////// POSSIBILITY OF SUCH DAMAGE. //////// /////////////////////////////////////////////////////////////////////////// CVS Log//// $Id: usb1_rom1.v,v 1.1.1.1 2002/09/19 12:07:29 rudi Exp $//// $Date: 2002/09/19 12:07:29 $// $Revision: 1.1.1.1 $// $Author: rudi $// $Locker: $// $State: Exp $//// Change History:// $Log: usb1_rom1.v,v $// Revision 1.1.1.1 2002/09/19 12:07:29 rudi// Initial Checkin////////////`include "usb1_defines.v"module usb1_rom1(clk, adr, dout);input clk;input [6:0] adr;output [7:0] dout;reg [7:0] dout;always @(posedge clk) case(adr) // synopsys full_case parallel_case // ==================================== // ===== DEVICE Descriptor ===== // ==================================== 7'h00: dout <= #1 8'd18; // this descriptor length 7'h01: dout <= #1 8'h01; // descriptor type设备描述符类型编号 7'h02: dout <= #1 8'h00; // USB version low byte 7'h03: dout <= #1 8'h01; // USB version high byte 7'h04: dout <= #1 8'hff; // device class 7'h05: dout <= #1 8'h00; // device sub class 7'h06: dout <= #1 8'hff; // device protocol 7'h07: dout <= #1 8'd64; // max packet size端点0的最大包的大小 7'h08: dout <= #1 8'h34; // vendor ID low byte厂商编号 7'h09: dout <= #1 8'h12; // vendor ID high byte 7'h0a: dout <= #1 8'h78; // product ID low byte产品编号 7'h0b: dout <= #1 8'h56; // product ID high byte 7'h0c: dout <= #1 8'h10; // device rel. number low byte设备出厂编号 7'h0d: dout <= #1 8'h00; // device rel. number high byte 7'h0e: dout <= #1 8'h00; // Manufacturer String Index描述厂商的字符串索引 7'h0f: dout <= #1 8'h00; // Product Descr. String Index描述产品字符串索引 7'h10: dout <= #1 8'h00; // S/N String Index描述设备序列号字符串索引 7'h11: dout <= #1 8'h01; // Number of possible config.可能的配置数量 // ==================================== // ===== Configuration Descriptor ===== // ==================================== 7'h12: dout <= #1 8'h09; // this descriptor length 7'h13: dout <= #1 8'h02; // descriptor type配置描述符类型编号 7'h14: dout <= #1 8'd53; // total data length low byte此配置所返回的所有数据大小 7'h15: dout <= #1 8'd00; // total data length high byte 7'h16: dout <= #1 8'h01; // number of interfaces此配置所支持的接口数量 7'h17: dout <= #1 8'h01; // number of configurations Set_Configuration命令需要的参数值 7'h18: dout <= #1 8'h00; // Conf. String Index 描述该配置的字符串的索引值 7'h19: dout <= #1 8'h40; // Config. Characteristics这里是不是有问题？最高位固定为1的啊！供电模式的选择 7'h1a: dout <= #1 8'h00; // Max. Power Consumption设备从总线提取的最大电流 // ==================================== // ===== Interface Descriptor ===== // ==================================== 7'h1b: dout <= #1 8'h09; // this descriptor length 7'h1c: dout <= #1 8'h04; // descriptor type接口描述符类型编号 7'h1d: dout <= #1 8'h00; // interface number该接口的编号 7'h1e: dout <= #1 8'h00; // alternate setting备用的接口描述符编号 7'h1f: dout <= #1 8'h05; // number of endpoints该接口使用的端点数，不包括端点0 7'h20: dout <= #1 8'hff; // interface class接口类型 7'h21: dout <= #1 8'h01; // interface sub class接口子类类型 7'h22: dout <= #1 8'hff; // interface protocol接口遵循的协议 7'h23: dout <= #1 8'h00; // interface string index描述该接口的字符串索引 // ==================================== // ===== Endpoint 1 Descriptor ===== // ==================================== 7'h24: dout <= #1 8'h07; // this descriptor length 7'h25: dout <= #1 8'h05; // descriptor type端点描述符类型编号 7'h26: dout <= #1 8'h81; // endpoint address端点地址及输入输出属性 0001输出端点（对主机） 7'h27: dout <= #1 8'h01; // endpoint attributes端点的传输类型属性 同步传输 7'h28: dout <= #1 8'h00; // max packet size low byte端点收发的最大包大小 7'h29: dout <= #1 8'h01; // max packet size high byte 7'h2a: dout <= #1 8'h01; // polling interval主机查询端点的时间间隔 // ==================================== // ===== Endpoint 2 Descriptor ===== // ==================================== 7'h2b: dout <= #1 8'h07; // this descriptor length 7'h2c: dout <= #1 8'h05; // descriptor type 7'h2d: dout <= #1 8'h02; // endpoint address0010输入端点（对主机） 7'h2e: dout <= #1 8'h01; // endpoint attributes 同步传输 7'h2f: dout <= #1 8'h00; // max packet size low byte 7'h30: dout <= #1 8'h01; // max packet size high byte 7'h31: dout <= #1 8'h01; // polling interval // ==================================== // ===== Endpoint 3 Descriptor ===== // ==================================== 7'h32: dout <= #1 8'h07; // this descriptor length 7'h33: dout <= #1 8'h05; // descriptor type 7'h34: dout <= #1 8'h83; // endpoint address0011输出端点（对主机） 7'h35: dout <= #1 8'h02; // endpoint attributes 批量传输 7'h36: dout <= #1 8'd64; // max packet size low byte 7'h37: dout <= #1 8'd00; // max packet size high byte 7'h38: dout <= #1 8'h01; // polling interval // ==================================== // ===== Endpoint 4 Descriptor ===== // ==================================== 7'h39: dout <= #1 8'h07; // this descriptor length 7'h3a: dout <= #1 8'h05; // descriptor type 7'h3b: dout <= #1 8'h04; // endpoint address0100输入端点（对主机） 7'h3c: dout <= #1 8'h02; // endpoint attributes 批量传输 7'h3d: dout <= #1 8'd64; // max packet size low byte 7'h3e: dout <= #1 8'd00; // max packet size high byte 7'h3f: dout <= #1 8'h01; // polling interval // ==================================== // ===== Endpoint 5 Descriptor ===== // ==================================== 7'h40: dout <= #1 8'h07; // this descriptor length 7'h41: dout <= #1 8'h05; // descriptor type 7'h42: dout <= #1 8'h85; // endpoint address0101输出端点（对主机） 7'h43: dout <= #1 8'h03; // endpoint attributes 中断传输 7'h44: dout <= #1 8'd64; // max packet size low byte 7'h45: dout <= #1 8'd00; // max packet size high byte 7'h46: dout <= #1 8'h01; // polling interval///* 被注释掉了 // ==================================== // ===== String Descriptor Lang ID===== // ==================================== 7'h47: dout <= #1 8'd06; // this descriptor length 7'h48: dout <= #1 8'd03; // descriptor type 7'h49: dout <= #1 8'd09; // Language ID 0 low byte 7'h4a: dout <= #1 8'd04; // Language ID 0 high byte 7'h4b: dout <= #1 8'd09; // Language ID 1 low byte 7'h4c: dout <= #1 8'd04; // Language ID 1 high byte 7'h4d: dout <= #1 8'd09; // Language ID 2 low byte 7'h4e: dout <= #1 8'd04; // Language ID 2 high byte // ==================================== // ===== String Descriptor 0 ===== // ==================================== 7'h50: dout <= #1 8'd010; // this descriptor length 7'h51: dout <= #1 8'd03; // descriptor type 7'h52: dout <= #1 "0"; 7'h53: dout <= #1 " "; 7'h54: dout <= #1 "g"; 7'h55: dout <= #1 "n"; 7'h56: dout <= #1 "i"; 7'h57: dout <= #1 "r"; 7'h58: dout <= #1 "t"; 7'h59: dout <= #1 "S"; // ==================================== // ===== String Descriptor 1 ===== // ==================================== 7'h60: dout <= #1 8'd010; // this descriptor length 7'h61: dout <= #1 8'd03; // descriptor type 7'h62: dout <= #1 "1"; 7'h63: dout <= #1 " "; 7'h64: dout <= #1 "g"; 7'h65: dout <= #1 "n"; 7'h66: dout <= #1 "i"; 7'h67: dout <= #1 "r"; 7'h68: dout <= #1 "t"; 7'h69: dout <= #1 "S"; // ==================================== // ===== String Descriptor 2 ===== // ==================================== 7'h70: dout <= #1 8'd010; // this descriptor length 7'h71: dout <= #1 8'd03; // descriptor type 7'h72: dout <= #1 "2"; 7'h73: dout <= #1 " "; 7'h74: dout <= #1 "g"; 7'h75: dout <= #1 "n"; 7'h76: dout <= #1 "i"; 7'h77: dout <= #1 "r"; 7'h78: dout <= #1 "t"; 7'h79: dout <= #1 "S";//*/ // ==================================== // ==================================== default: dout <= #1 8'd00; endcaseendmodule⌨️ 快捷键说明
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