Pixel_Grab
Address: 0x0b
Access: Read/Write
Reset Value: Undefined
Bit
7
6
5
4
3
2
1
0
Field
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
Data Type: Eight-bit word.
USAGE: For test purposes, the sensor will read out the contents of the pixel array, one pixel per
frame. To start a pixel grab, write anything to this register to reset the pointer to pixel 0,0.
Then read the PIXRDY bit in the Motion register. When the PIXRDY bit is set, there is valid data
in this register to read out. After the data in this register is read, the pointer will automatically
increment to the next pixel. Reading may continue indefinitely; once a complete frame’s worth of
pixels has been read, PIXFIRST will be set to high to indicate the start of the first pixel and the
address pointer will start at the beginning location again.
Pixel Address Map (Looking through the ADNS-3120-001 Lens)
First Pixel
Top Xray View of Mouse
0
1
2
3
4
5
6
7
8
9
22 44 66 88 110 132 154 176 198 220 242 264 286 308 330 352 374 396 418 440 462
23 45 67 89 111 133 155 177 199 221 243 265 287 309 331 353 375 397 419 441 463
24 46 68 90 112 134 156 178 200 222 244 266 288 310 332 354 376 398 420 442 464
25 47 69 91 113 135 157 179 201 223 245 267 289 311 333 355 377 399 421 443 465
26 48 70 92 114 136 158 180 202 224 246 268 290 312 334 356 378 400 422 444 466
27 49 71 93 115 137 159 181 203 225 247 269 291 313 335 357 379 401 423 445 467
28 50 72 94 116 138 160 182 204 226 248 270 292 314 336 358 380 402 424 446 468
29 51 73 95 117 139 161 183 205 227 249 271 293 315 337 359 381 403 425 447 469
30 52 74 96 118 140 162 184 206 228 250 272 294 316 338 360 382 404 426 448 470
31 53 75 97 119 141 163 185 207 229 251 273 295 317 339 361 383 405 427 449 471
LB
1
RB
P
O
S
I
T
I
20
A3040
YYWW
10 32 54 76 98 120 142 164 186 208 230 252 274 296 318 340 362 384 406 428 450 472
11 33 55 77 99 121 143 165 187 209 231 253 275 297 319 341 363 385 407 429 451 473
12 34 56 78 100 122 144 166 188 210 232 254 276 298 320 342 364 386 408 430 452 474
13 35 57 79 101 123 145 167 189 211 233 255 277 299 321 343 365 387 409 431 453 475
14 36 58 80 102 124 146 168 190 212 234 256 278 300 322 344 366 388 410 432 454 476
15 37 59 81 103 125 147 169 191 213 235 257 279 301 323 345 367 389 411 433 455 477
16 38 60 82 104 126 148 170 192 214 236 258 280 302 324 346 368 390 412 434 456 478
17 39 61 83 105 127 149 171 193 215 237 259 281 303 325 347 369 391 413 435 457 479
18 40 62 84 106 128 150 172 194 216 238 260 282 304 326 348 370 392 414 436 458 480
19 41 63 85 107 129 151 173 195 217 239 261 283 305 327 349 371 393 415 437 459 481
20 42 64 86 108 130 152 174 196 218 240 262 284 306 328 350 372 394 416 438 460 482
21 43 65 87 109 131 153 175 197 219 241 263 285 307 329 351 373 395 417 439 461 483
V
E
Y
11
10
Last Pixel
POSITIVE X
CRC0
Address: 0x0c
Access: Read
Reset Value: Undefined
Bit
7
6
5
4
3
2
1
0
Field
CRC07
CRC06
CRC05
CRC04
CRC03
CRC02
CRC01
CRC00
Data Type: Eight-bit number
USAGE: Register 0x0c reports the first byte of the system self test results. Value = 0xAF. See Self
Test register 0x10.
22
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