User`s manual

150 fwdata <= 16’h60;

151 fop <= ‘FLASHOP_WRITE;

152 state <= state+1;

153 end

154

155 8’h05:

156 begin

157 // Issue "confirm clear lock bits" command

158 faddress <= 0;

159 fwdata <= 16’hD0;

160 fop <= ‘FLASHOP_WRITE;

161 state <= state+1;

162 end

163

164 8’h06:

165 begin

166 // Read status

167 faddress <= 0;

168 fop <= ‘FLASHOP_READ;

169 state <= state+1;

170 end

171

172 8’h07:

173 if (frdata[7] == 1) // Done clearing lock bits

174 if (frdata[6:1] == 0) // No errors

175 begin

176 faddress <= 0;

177 fop <= ‘FLASHOP_IDLE;

178 state <= state+1;

179 end

180 else

181 status <= ‘STATUS_LOCK_BIT_ERROR;

182 else // Still busy, reread status register

183 begin

184 faddress <= 0;

185 fop <= ‘FLASHOP_READ;

186 end

187

188 //////////////////////////////////////////////////////////////////////

189 // Block Erase Sequence

190 //////////////////////////////////////////////////////////////////////

191 8’h08:

192 begin

193 status <= ‘STATUS_ERASING;

194 fwdata <= 16’h20; // Issue "erase block" command

195 fop <= ‘FLASHOP_WRITE;