16
CHAPTER 19 PIU (TOUCH PANEL INTERFACE UNIT) ................................................................. 381
19.1 GENERAL................................................................................................................................ 381
19.1.1 Block Diagrams ........................................................................................................................ 382
19.2 SCAN SEQUENCER STATE TRANSITION ........................................................................ 384
19.3 REGISTER SET...................................................................................................................... 386
19.3.1 PIUCNTREG (0x0B00 0122) ..................................................................................................... 387
19.3.2 PIUINTREG (0x0B00 0124)....................................................................................................... 390
19.3.3 PIUSIVLREG (0x0B00 0126)..................................................................................................... 391
19.3.4 PIUSTBLREG (0x0B00 0128) ................................................................................................... 392
19.3.5 PIUCMDREG (0x0B00 012A).................................................................................................... 393
19.3.6 PIUASCNREG (0x0B00 0130)................................................................................................... 395
19.3.7 PIUAMSKREG (0x0B00 0132) .................................................................................................. 397
19.3.8 PIUCIVLREG (0x0B00 013E) .................................................................................................... 398
19.3.9 PIUPBnmREG (0x0B00 02A0 to 0x0B00 02AE, 0x0B00 02BC to 0x0B00 02BE) ................. 399
19.3.10 PIUABnREG (0x0B00 02B0 to 0x0B00 02B6) ....................................................................... 400
19.4 REGISTER SETTING FLOW................................................................................................. 401
19.5 RELATIONSHIPS AMONG TPX, TPY, AND ADIN PINS AND STATES....................... 403
19.6 TIMING..................................................................................................................................... 404
19.6.1 Touch/Release Detection Timing............................................................................................ 404
19.6.2 A/D Port Scan Timing............................................................................................................... 404
19.7 DATA LOSS INTERRUPT CONDITIONS............................................................................ 405
19.8 COMPARISON OF VR4102 AND VR4101
TM
....................................................................... 407
CHAPTER 20 AIU (AUDIO INTERFACE UNIT)................................................................................. 409
20.1 GENERAL................................................................................................................................ 409
20.2 REGISTER SET...................................................................................................................... 409
20.2.1 MDMADATREG (0x0B00 0160) ................................................................................................ 410
20.2.2 SDMADATREG (0x0B00 0162)................................................................................................. 411
20.2.3 SODATREG (0x0B00 0166) ...................................................................................................... 412
20.2.4 SCNTREG (0x0B00 0168)......................................................................................................... 413
20.2.5 SCNVRREG (0x0B00 016A)...................................................................................................... 414
20.2.6 MIDATREG (0x0B00 0170) ....................................................................................................... 415
20.2.7 MCNTREG (0x0B00 0172) ........................................................................................................ 416
20.2.8 MCNVRREG (0x0B00 0174)...................................................................................................... 417
20.2.9 DVALIDREG (0x0B00 0178)...................................................................................................... 418
20.2.10 SEQREG (0x0B00 017A)......................................................................................................... 419
20.2.11 INTREG (0x0B00 017C) .......................................................................................................... 420
20.3 OPERATION SEQUENCE...................................................................................................... 421
20.3.1 Output (Speaker) ...................................................................................................................... 421
20.3.2 Input (MIC)................................................................................................................................. 422
CHAPTER 21 KIU (KEYBOARD INTERFACE UNIT)........................................................................ 423
21.1 GENERAL................................................................................................................................ 423
21.2 REGISTER SET...................................................................................................................... 423
21.2.1 KIUDATn (0x0B00 0180 to 0x0B00 018A) ............................................................................... 424