22

PIX_MIN

Address: 0x0a

Minimum Pixel Value Register

Access: Read

Reset Value: 0x00

Bit

76543210

Field

MP7

MP6

MP5

MP4

MP3

MP2

MP1

MP0

Data Type: Eight-bit number.

USAGE: Store the lowest pixel value in current frame. Minimum value = 0, maximum value = 254. The minimum pixel

value may vary with different frame.

PIX_GRAB

Address: 0x0b

Pixel Grabber Register

Access: Read/Write

Reset Value: 0x00

Bit

76543210

Field

PG_VALID

PG6

PG5

PG4

PG3

PG2

PG1

PG0

Data Type: Eight bit word.

USAGE: The pixel grabber captures 1 pixel per frame. Bit-7 (MSB) of this register will be set to indicate that the 7-bit pixel

data (PG[6:0]) is valid for grabbing. In a 22x22 pixel array, it will take 484 read operations to grab all the pixels to

form the complete image.

Bit(s)

Field Name

Description

7

PG_VALID

Pixel Grabber Valid

6:0

PG[6:0]

Pixel Data

NOTE:

Any write operation into this register will reset the grabber to origin (pixel 0 position). The sensor should not

be moved before the 484 read operations are completed to ensure original data is grabbed to produce good

(uncorrupted) image.

22X22 Pixel Array Address Map – (View from top of sensor)

Positive Y

Positive X

Top X-ray View of Mouse

Pin 1

Left

Button

Right

Button

LED

8

7

6

5

4

3

2

1

462

440

418

396

374

352

330

308

286

264

242

220

198

176

154

132

110

88

66

44

22

0

First

463

441

419

397

375

353

331

309

287

265

243

221

199

177

155

133

111

89

67

45

23

1

464

442

420

398

376

354

332

310

288

266

244

222

200

178

156

134

112

90

68

46

24

2

465

443

421

399

377

355

333

311

289

267

245

223

201

179

157

135

113

91

69

47

25

3

466

444

422

400

378

356

334

312

290

268

246

224

202

180

158

136

114

92

70

48

26

4

467

445

423

401

379

357

335

313

291

269

247

225

203

181

159

137

115

93

71

49

27

5

468

446

424

402

380

358

336

314

292

270

248

226

204

182

160

138

116

94

72

50

28

6

469

447

425

403

381

359

337

315

293

271

249

227

205

183

161

139

117

95

73

51

29

7

470

448

426

404

382

360

338

316

294

272

250

228

206

184

162

140

118

96

74

52

30

8

471

449

427

405

383

361

339

317

295

273

251

229

207

185

163

141

119

97

75

53

31

9

472

450

428

406

384

362

340

318

296

274

252

230

208

186

164

142

120

98

76

54

32

10

473

451

429

407

385

363

341

319

297

275

253

231

209

187

165

143

121

99

77

55

33

11

474

452

430

408

386

364

342

320

298

276

254

232

210

188

166

144

122

100

78

56

34

12

475

453

431

409

387

365

343

321

299

277

255

233

211

189

167

145

123

101

79

57

35

13

476

454

432

410

388

366

344

322

300

278

256

234

212

190

168

146

124

102

80

58

36

14

477

455

433

411

389

367

345

323

301

279

257

235

213

191

169

147

125

103

81

59

37

15

478

456

434

412

390

368

346

324

302

280

258

236

214

192

170

148

126

104

82

60

38

16

479

457

435

413

391

369

347

325

303

281

259

237

215

193

171

149

127

105

83

61

39

17

480

458

436

414

392

370

348

326

304

282

260

238

216

194

172

150

128

106

84

62

40

18

481

459

437

415

393

371

349

327

305

283

261

239

217

195

173

151

129

107

85

63

41

19

482

460

438

416

394

372

350

328

306

284

262

240

218

196

174

152

130

108

86

64

42

20

Last

483

461

439

417

395

373

351

329

307

285

263

241

219

197

175

153

131

109

87

65

43

21

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.

PixArt Imaging Inc.

PixArt Imaging Inc.

ADNS-3000 Low Power Optical Mouse Sensor