Cirrus-logic EP93xx Bedienungsanleitung Seite 740
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25-2 DS785UM1
Copyright 2007 Cirrus Logic
Analog Touch Screen Interface
EP93xx User’s Guide
2
5
2
5
25
Figure 25-1. Different Types of Touch Screens
For 8- and 4-wire touch screens, the point at which the contact is made can be determined by
measuring a voltage driven between the bus bars on the X-axis layer through either or both of
the Y lines, and by then measuring a voltage driven between the bus bars on the Y-axis layer
through either or both of the X lines. By comparing these voltages to values determined
during calibration, the location of the touch can be determined.
4 WIRE ANALOG RESISTIVE TOUCH SCREEN SCHEMATIC
X+
Y+
X-
Y-
8 WIRE ANALOG RESISTIVE TOUCH SCREEN SCHEMATIC
X+
Y+
X-
Y-
SX+
SY+
SX-
SY-
5 WIRE ANALOG RESISTIVE TOUCH SCREEN SCHEMATIC
V+
Z+/-
V-
Z-/+
Wiper
7 WIRE (5 WIRE WITH FEEDBACK) ANALOG RESISTIVE
TOUCH SCREEN SCHEMATIC
V+
Z+/-
V-
Z-/+
sV+
sV-
Wiper
- EP93xx 1
- Contents 3
- EP93xx User’s Guide 10
- Chapter 21. I 12
- Revision History 22
- Chapter P 23
- 17Preface 23
- P.3 Reference Documents 25
- P.4 Notational Conventions 25
- P.5 Register Example 26
- DS785UM1 P-5 27
- P-6 DS785UM1 28
- Chapter 1 29
- 1Introduction 29
- I-Cache 30
- D-Cache 30
- Memory Management Unit 30
- High-Speed Bus (AHB) 31
- Peripheral Bus (APB) 31
- DS785UM1 1-5 33
- Introduction 33
- 1-6 DS785UM1 34
- 1.4.2 MaverickCrunch 35
- 1.4.3 MaverickKey 36
- DS785UM1 1-9 37
- 1.4.12 Graphics Accelerator 38
- 1.4.13 PCMCIA Interface 38
- Chapter 2 39
- 2.2.2 Block Diagram 40
- 2.2.3 Operations 40
- 2.2.3.1 ARM9TDMI Core 41
- 2-4 DS785UM1 42
- 2.2.3.2.3 MMU Enable 43
- 2.2.3.3.2 Data Cache Enable 44
- DS785UM1 2-7 45
- 2-8 DS785UM1 46
- Figure 2-3. Main Data Paths 46
- 2.2.8 Bus Arbitration 47
- 2.3 AHB Decoder 49
- 2.3.2 AHB-to-APB Bridge 50
- 2.3.3 APB Slave 51
- 2.3.4 Register Definitions 51
- 2.3.5 Memory Map 54
- 2.3.6 Internal Register Map 55
- End Of Line Offset value N 59
- Chapter 3 71
- 3MaverickCrunch Co-Processor 71
- 3-2 DS785UM1 72
- 3.1.3 Pipelines and Latency 73
- 3.1.4 Data Registers 73
- 63 62 55 32 31 0 73
- 3-4 DS785UM1 74
- 3.1.6 Comparisons 76
- 3.2.1 Example 1 78
- 3.2.2 Example 2 79
- 3.3 DSPSC Register 80
- DS785UM1 3-11 81
- 3-12 DS785UM1 82
- DS785UM1 3-13 83
- Immediate pre-indexed 0 91
- Immediate post-indexed 0 91
- Immediate post-indexed 1 91
- 3.5.2 Move Instructions 94
- 3.5.5 Shift Instructions 105
- 3.5.6 Compare Instructions 106
- Description: 117
- Mnemonic: 117
- Bit Definitions: 117
- MaverickCrunch Co-Processor 118
- 3-48 DS785UM1 118
- Copyright 2007 Cirrus Logic 118
- Chapter 4 119
- 4Boot ROM 119
- 4.1.2.1 Image Header 120
- 4.1.2.2 Boot Algorithm 120
- 4.1.2.3 Flowchart 121
- 4.2 Boot Options 122
- CSn[7:6] value: 123
- 4.2.1 UART Boot 124
- 4.2.2 SPI Boot 124
- 4.2.3 FLASH Boot 124
- 5. Set up the SDRAM 126
- 7. Run from SDRAM 126
- Chapter 5 127
- 5System Controller 127
- 5.1.5 Clock Control 130
- DS785UM1 5-5 131
- System Controller 131
- 5-6 DS785UM1 132
- DS785UM1 5-7 133
- 5.1.6 Power Management 135
- 5.1.6.2 System Power States 136
- Power on 137
- Standby Run Halt 137
- 5.1.7 Interrupt Generation 138
- 5.2 Registers 139
- Register Descriptions 140
- PwrSts 140
- Address: 141
- Definition: 141
- Bit Descriptions: 141
- 5-16 DS785UM1 142
- Standby and Halt 143
- DS785UM1 5-19 145
- ClkSet2 146
- DS785UM1 5-21 147
- ScratchReg0, ScratchReg1 148
- APBWait 148
- BusMstrArb 149
- BootModeClr 150
- DeviceCfg 151
- DS785UM1 5-27 153
- 5-28 DS785UM1 154
- VidClkDiv 155
- MIRClkDiv 156
- I2SClkDiv 157
- KeyTchClkDiv 158
- CHIP_ID 159
- Default: 160
- SysSWLock 161
- 5-36 DS785UM1 162
- Chapter 6 163
- 6.1.1 Interrupt Priority 164
- 6.1.3 Interrupt Details 166
- DS785UM1 6-5 167
- Vectored Interrupt Controller 167
- 6-6 DS785UM1 168
- DS785UM1 6-7 169
- 6.2 Registers 170
- from the respective base 170
- VICxIRQStatus 171
- VICxFIQStatus 172
- VICxRawIntr 172
- VICxIntSelect 173
- VICxIntEnable 173
- VICxIntEnClear 174
- VICxSoftInt 174
- VICxSoftIntClear 175
- VICxProtection 175
- VICxVectAddr 176
- VICxVectCntl15 180
- 6-20 DS785UM1 182
- Chapter 7 183
- Timing and Interface 183
- 7.2 Features 185
- 7.3.2 Color Look-Up Tables 186
- Displays 186
- 7.3.7 Hardware Cursor 189
- Interface) 190
- 7.4.2 Video FIFO 191
- 7.4.3 Video Pixel MUX 192
- 7.4.4 Blink Function 192
- 7.4.5 Color Look-Up-Tables 193
- 7.4.6 Color RGB Mux 193
- 7.4.7 Pixel Shift Logic 194
- 7-16 DS785UM1 198
- 7.4.9 Hardware Cursor 206
- 302826242220181614121086420 207
- 1514131211109876543210 207
- 7-26 DS785UM1 208
- DS785UM1 7-27 209
- 7.4.10 Video Timing 210
- DS785UM1 7-29 211
- 7-30 DS785UM1 212
- DS785UM1 7-31 213
- 7.4.11 Blink Logic 214
- 7.4.11.3 Types of Blinking 215
- register with 216
- 888 Blinking: 216
- 7.4.12 Color Mode Definition 217
- 7.5 Registers 218
- No Read/Write 24 bits 218
- VLinesTotal 220
- VSyncStrtStop 220
- VActiveStrtStop 221
- VBlankStrtStop 222
- VClkStrtStop 223
- HClkTotal 224
- HSyncStrtStop 224
- HActiveStrtStop 225
- HBlankStrtStop 226
- HClkStrtStop 227
- VidScrnPage 228
- VidScrnHPage 228
- ScrnLines 229
- LineLength 229
- VLineStep 230
- Address: 0x8003_0230 231
- - Read/Write 231
- Other Video Registers 232
- Brightness 232
- VideoAttribs 233
- 7-52 DS785UM1 234
- DS785UM1 7-53 235
- 7-54 DS785UM1 236
- RasterSWLock 237
- FIFOLevel 238
- PixelMode 239
- ParllIfOut 242
- ParllIfIn 243
- 7-62 DS785UM1 244
- Blink Control Registers 245
- BlinkRate 245
- BlinkMask 245
- BlinkPattrn 246
- PattrnMask 247
- BkgrndOffset 247
- Hardware Cursor Registers 248
- CursorAdrStart 248
- CursorAdrReset 249
- CursorSize 250
- CursorColor1 251
- CursorColor2 251
- CursorBlinkColor1 251
- CursorBlinkColor2 251
- CursorXYLoc 252
- CursorDScanLHYLoc 253
- CursorBlinkRateCtrl 254
- 0x7, 0x15, 0x23, and 0x31 255
- 7-74 DS785UM1 256
- LUTSwCtrl 258
- ColorLUT 259
- Video Signature Registers 259
- VidSigRsltVal 259
- VidSigCtrl 260
- VSigStrtStop 261
- HSigStrtStop 262
- SigClrStr 263
- 7-82 DS785UM1 264
- Chapter 8 265
- 8Graphics Accelerator 265
- 8.2.1 Copy 266
- 8.2.2 Remapping 267
- 8.2.3 Block Fills 267
- 8.5 Register Programming 272
- 8.5.2 Pixel End and Start 273
- 8.5.2.1 4 BPP Word Layout 274
- 8.5.2.2 8 BPP Word Layout 275
- 8.5.2.3 16 BPP WORD Layout 275
- 8.5.2.4 24 BPP mode 276
- 8.6 Register Usage 277
- DS785UM1 8-15 279
- Graphics Accelerator 279
- 8.6.3 Block Fill Function 280
- DS785UM1 8-17 281
- 8.6.4 Block Copy Function 282
- DS785UM1 8-19 283
- 8-20 DS785UM1 284
- Copyright 2007 Cirrus Logic 284
- DS785UM1 8-21 285
- 8.7 Registers 286
- Default: 0x0000_0000 288
- Mask: 0x001F_001F 288
- BLKDESTSTRT 289
- BLKSRCWIDTH 290
- SRCLINELENGTH 290
- BLKDESTWIDTH 291
- BLKDESTHEIGHT 292
- DESTLINELENGTH 293
- 0 0 0 not defined 294
- 0 0 1 4 bit per pixel 294
- 0 1 0 8 bits per pixel 294
- 0 1 1 not defined 295
- 1 0 0 16 bits per pixel 295
- 1 0 1 not defined 295
- 8-32 DS785UM1 296
- DS785UM1 8-33 297
- TRANSPATTRN 298
- BLOCKMASK 298
- BACKGROUND 299
- LINEINC 300
- LINEINIT 300
- LINEPATTRN 301
- 0x000F_FFFF 302
- Chapter 9 303
- 9.1.1.3 Power-down Modes 304
- 9.1.1.4 Address Space 304
- 9.1.2 MAC Engine 305
- 9-4 DS785UM1 306
- 9.1.3.1 Carrier Deference 307
- 9-6 DS785UM1 308
- 9.1.4 Transmit Back-Off 309
- 9.1.4.3 Bit Order 310
- 9.1.4.6 Hash Filter 311
- 9.1.4.7 Flow Control 312
- 9.1.4.8 Receive Flow Control 312
- 9.1.4.11 Accessing the MII 313
- PHY's registers 314
- 9.2 Descriptor Processor 315
- 9-14 DS785UM1 316
- 9.2.3 Receive Status Queue 318
- Receive Status Queue 319
- Receive Status - First Word 320
- DS785UM1 9-19 321
- Receive Status - Second Word 322
- 9.2.3.2 Receive Flow 323
- 9.2.3.3 Receive Errors 324
- DS785UM1 9-23 325
- Receive Descriptor 326
- Receive Status 326
- DS785UM1 9-25 327
- 9-26 DS785UM1 328
- DS785UM1 9-27 329
- 9-30 DS785UM1 332
- DS785UM1 9-31 333
- Transmit Status 334
- DS785UM1 9-33 335
- 9.2.3.12 Transmit Flow 336
- 9.2.3.13 Transmit Errors 337
- 9-36 DS785UM1 338
- 9.2.4 Interrupts 339
- 9.2.5 Initialization 339
- 9.2.5.1 Interrupt Processing 340
- 9.2.5.4 Other Processing 340
- DS785UM1 9-39 341
- 9.3 Registers 342
- 0x8001_0000 - Read/Write 343
- DS785UM1 9-43 345
- Chip Reset: 346
- Soft Reset: 347
- SelfCtl 348
- DS785UM1 9-47 349
- DS785UM1 9-49 351
- 9-50 DS785UM1 352
- 0x0050 through 0x005F 354
- through 005F 354
- 10), is only used as the 355
- HashTbl 356
- TXCollCnt 357
- RXMissCnt 357
- RXRuntCnt 358
- TestCtl 359
- DS785UM1 9-59 361
- IntStsP/IntStsC 362
- DS785UM1 9-61 363
- GlIntSts 364
- GlIntMsk 365
- GlIntROSts 366
- GlIntFrc 366
- DS785UM1 9-65 367
- MIIData 368
- DS785UM1 9-67 369
- 9-68 DS785UM1 370
- DS785UM1 9-69 371
- RXDQBAdd 373
- RXDQBLen 374
- RXDQCurLen 374
- RXDCurAdd 375
- RXBCA 376
- RXStsQBAdd 377
- RXStsQBLen 378
- RXStsQCurLen 378
- RXStsQCurAdd 379
- RXStsEnq 380
- RXHdrLen 380
- TXDQBAdd 381
- TXDQBLen 382
- TXDQCurLen 382
- TXDQCurAdd 383
- TXStsQBAdd 384
- TXStsQBLen 385
- TXStsQCurLen 386
- TXStsQCurAdd 386
- RXBufThrshld 387
- TXBufThrshld 388
- RXStsThrshld 389
- TXStsThrshld 390
- RXDThrshld 391
- TXDThrshld 392
- MaxFrmLen 393
- 9-92 DS785UM1 394
- Chapter 10 395
- 10DMA Controller 395
- 10-2 DS785UM1 396
- DMA Controller 396
- 10.1.3 DMA Operations 397
- 10-4 DS785UM1 398
- DS785UM1 10-5 399
- 10.1.7 Interrupt Interface 400
- DS785UM1 10-7 401
- 10.1.9.1.1 DMA_IDLE 402
- 10.1.9.1.2 DMA_STALL 402
- 10.1.9.1.3 DMA_ON 402
- 10.1.9.1.4 DMA_NEXT 402
- DS785UM1 10-9 403
- 10.1.10.1.1 DMA_IDLE 404
- 10.1.10.1.2 DMA_STALL 404
- 10.1.10.1.3 DMA_MEM_RD 405
- 10.1.10.1.4 DMA_MEM_WR 405
- 10.1.10.1.5 DMA_BWC_WAIT 406
- 10.1.10.2.1 DMA_NO_BUF 406
- 10.1.10.2.2 DMA_BUF_ON 406
- 10.1.10.2.3 DMA_BUF_NEXT 407
- 10-14 DS785UM1 408
- DS785UM1 10-15 409
- 10.1.10.6 Bandwidth Control 410
- 12345678 411
- 10.1.12 Buffer Descriptors 412
- 10.1.13 Bus Arbitration 413
- 10.2 Registers 414
- Register 415
- DS785UM1 10-23 417
- INTERRUPT 419
- DS785UM1 10-27 421
- MAXCNTx 423
- Name Access Bits Reset Value 424
- 10-32 DS785UM1 426
- DS785UM1 10-33 427
- Table 10-9. BWC Decode Values 427
- BWC Bytes 427
- 10-34 DS785UM1 428
- 10-38 DS785UM1 432
- DS785UM1 10-39 433
- 10-40 DS785UM1 434
- SAR_BASEx 436
- DAR_BASEx 437
- SAR_CURRENTx 437
- DAR_CURRENTx 438
- DMAGlInt 438
- Chapter 11 441
- 11.2.1 Data Transfer Types 442
- Device Register 443
- Host Controller 443
- Communications Area 443
- Shared RAM 443
- 11.2.2.2 Data Structures 444
- Interrupt 445
- Pointers 445
- Endpoint Poll Interval (ms) 445
- 11.2.3.3 List Management 447
- 11.2.3.4 Root Hub 447
- 11.2.4.1 USB States 448
- 11.2.4.2 Frame Management 448
- 11.2.4.3 List Processing 448
- 11.2.5.1 AHB Slave 449
- 11.2.5.2 AHB Master 449
- 11.2.5.3 HCI Slave Block 449
- 11.2.5.4 HCI Master Block 450
- 11.2.5.5 USB State Control 450
- 11.2.5.6 Data FIFO 450
- 11.2.5.7 List Processor 450
- 11.3 Registers 451
- HcRevision 452
- HcControl 452
- 11-14 DS785UM1 454
- HcCommandStatus 455
- 11-16 DS785UM1 456
- HcInterruptStatus 457
- HcInterruptEnable 458
- HcInterruptDisable 459
- HcPeriodCurrentED 460
- HcControlHeadED 461
- HcControlCurrentED 462
- HcBulkHeadED 462
- HcBulkCurrentED 463
- HcDoneHead 464
- HcFmInterval 464
- HcFmRemaining 465
- HcFmNumber 466
- HcPeriodicStart 466
- HcLSThreshold 467
- HcRhDescriptorA 468
- HcRhDescriptorB 469
- HcRhStatus 470
- DS785UM1 11-31 471
- HcRhPortStatusx 472
- DS785UM1 11-33 473
- 11-34 DS785UM1 474
- DS785UM1 11-35 475
- USBCfgCtrl 476
- USBHCISts 477
- 11-38 DS785UM1 478
- Chapter 12 479
- 12Static Memory Controller 479
- WAITn must remain asserted 480
- DS785UM1 12-3 481
- Static Memory Controller 481
- 12-4 DS785UM1 482
- DS785UM1 12-7 485
- 12.5 PC Card Memory Mapping 486
- 12.6 Registers 488
- 12-12 DS785UM1 490
- PCAttribute 491
- PCCommon 492
- PCMCIACtrl 494
- DS785UM1 12-17 495
- 12-18 DS785UM1 496
- Chapter 13 497
- 13-2 DS785UM1 498
- 13.3 Address Pin Usage 499
- 13.4 SDRAM Initialization 500
- DS785UM1 13-5 501
- Step Action Reason 501
- 13-6 DS785UM1 502
- 13.6 SDRAM Self Refresh 504
- 1 0 0 0 0 nSDCS3 505
- 0 1 1 1 1 nSDCS3 506
- X 1 1 1 0 nSDCS2 506
- X 1 1 0 1 nSDCS1 506
- X 1 1 0 0 nSDCS0 506
- DS785UM1 13-12 508
- DS785UM1 13-13 509
- DS785UM1 13-14 510
- DS785UM1 13-15 511
- DS785UM1 13-16 512
- 13.9 Registers 513
- GlConfig 514
- DS785UM1 13-19 515
- Default: 0x0000_0080 516
- BootSts 517
- SDRAMDevCfg[3:0] 518
- 13-24 DS785UM1 520
- DS785UM1 13-25 521
- 0 - Width is 32-bits 522
- 1 - Width is 16-bits 522
- Chapter 14 523
- 14.2.1.1 AMBA APB Interface 524
- 14.2.1.2 DMA Block 524
- 14.2.1.3 Register Block 524
- 14-4 DS785UM1 526
- 14.2.2 UART Operation 527
- 14.2.2.1 Error Bits 528
- 14.2.2.2 Disabling the FIFOs 528
- 14.2.3 Interrupts 529
- 14.3 Modem 530
- 14.4 HDLC 530
- 14.4.2 Selecting HDLC Modes 531
- 14.4.3 HDLC Transmit 533
- 14.4.4 HDLC Receive 533
- 14.4.5 CRCs 534
- 14.4.6 Address Matching 534
- 14.4.7 Aborts 535
- 14.4.8 DMA 536
- 14.5.1 Clocking Requirements 537
- 14-16 DS785UM1 538
- 14.1 Registers 539
- UART1RXSts 540
- UART1LinCtrlHigh 541
- UART1LinCtrlMid 542
- UART1LinCtrlLow 543
- UART1Ctrl 544
- UART1Flag 544
- UART1IntIDIntClr 546
- UART1DMACtrl 547
- Modem Register Descriptions 547
- UART1ModemCtrl 547
- UART1ModemSts 548
- HDLC Register Descriptions 549
- UART1HDLCCtrl 549
- 14-28 DS785UM1 550
- DS785UM1 14-29 551
- UART1HDLCAddMtchVal 552
- UART1HDLCAddMask 553
- UART1HDLCRXInfoBuf 553
- UART1HDLCSts 554
- DS785UM1 14-33 555
- 14-34 DS785UM1 556
- DS785UM1 14-35 557
- 14-36 DS785UM1 558
- Chapter 15 559
- 15-2 DS785UM1 560
- 15.2.2 IrDA SIR Operation 561
- 15.2.3 IrDA Data Modulation 562
- 15.3.1 Clocking Requirements 563
- 15-6 DS785UM1 564
- 15.4 Registers 565
- UART2RXSts 566
- UART2LinCtrlHigh 567
- UART2LinCtrlMid 568
- UART2LinCtrlLow 569
- UART2Ctrl 570
- UART2Flag 571
- UART2IntIDIntClr 572
- UART2IrLowPwrCntr 573
- UART2DMACtrl 574
- UART2TMR 575
- 15-18 DS785UM1 576
- Chapter 16 577
- 16UART3 With HDLC Encoder 577
- 16.2.2 Clocking Requirements 578
- 16.3 Registers 579
- UART3RXSts 580
- UART3LinCtrlHigh 581
- UART3LinCtrlMid 583
- UART3LinCtrlLow 583
- UART3Ctrl 584
- UART3Flag 585
- UART3IntIDIntClr 586
- UART3LowPwrCntr 587
- UART3DMACtrl 587
- UART3ModemCtrl 588
- UART3HDLCCtrl 589
- 16-14 DS785UM1 590
- UART3 With HDLC Encoder 590
- DS785UM1 16-15 591
- UART3HDLCAddMtchVal 592
- UART3HDLCAddMask 592
- UART3HDLCRXInfoBuf 593
- UART3HDLCSts 594
- DS785UM1 16-19 595
- 16-20 DS785UM1 596
- Chapter 17 597
- 17.3.1 Overview 598
- 17.3.2.2 Transmitting Data 599
- 17-4 DS785UM1 600
- 8, and if there are three 601
- 17.3.2.3.4 Error Conditions 602
- 17.3.2.4 Special Conditions 603
- 17.4.1 Introduction 604
- 17.4.1.2 Frame Format 605
- 17.4.1.2.1 Address Field 606
- 17.4.1.2.2 Control Field 606
- 17.4.1.2.3 Data Field 606
- 17.4.1.2.4 CRC Field 606
- 17.4.2.2 Receive Operation 607
- 17-12 DS785UM1 608
- 17.4.2.3 Transmit Operation 609
- 17.5.1 Introduction 610
- 17.5.1.2.1 Address Field 612
- 17.5.1.2.2 Control Field 612
- 17.5.1.2.3 Data Field 612
- 17.5.1.2.4 CRC Field 612
- DS785UM1 17-17 613
- 17.5.2.2 Receive Operation 614
- 17.5.2.3 Transmit Operation 615
- 17.5.3 IrDA Connectivity 616
- 17.6 Registers 619
- 17-24 DS785UM1 620
- IrAdrMatchVal 621
- IrDataTail 624
- IrDMACR 626
- 17-38 DS785UM1 634
- Chapter 18 635
- 18Timers 635
- 18.2 Registers 636
- Timer1Load 637
- Timer2Load 637
- Timer3Load 637
- Timer1Value 638
- Timer2Value 638
- Timer3Value 638
- Timer1Clear 639
- Timer2Clear 639
- Timer3Clear 639
- Timer1Control 640
- Timer2Control 640
- Timer3Control 640
- Timer4ValueLow 641
- Timer4ValueHigh 641
- Chapter 19 643
- 19Watchdog Timer 643
- 19.1.1 Watchdog Activation 644
- 19.1.2 Clocking Requirements 644
- 19.1.3 Reset Requirements 644
- 19.1.4 Watchdog Status 644
- 19.1 Registers 645
- 19-4 DS785UM1 646
- Watchdog Timer 646
- WDStatus 647
- 19-6 DS785UM1 648
- Chapter 20 649
- 20-2 DS785UM1 650
- Component 651
- 20.1.1.6 Real-Time Interrupt 651
- 20.1.2 Reset Control 652
- RTCMatch 653
- RTCLoad 654
- RTCCtrl 654
- RTCSWComp 655
- 20-8 DS785UM1 656
- Chapter 21 657
- S Controller 657
- DS785UM1 21-3 659
- 21-4 DS785UM1 660
- S Receiver Channel Overview 661
- 21.3.1 Receiver FIFO’s 662
- S Master Clock Generation 663
- S Bit Clock Rate Generation 665
- 21.6 Interrupts 666
- DS785UM1 21-11 667
- 21.7.1 I 668
- S TX Registers 668
- S TX Register Descriptions 669
- I2STX0Lft 669
- I2STX0Rt 669
- I2STX1Lft 670
- I2STX1Rt 670
- I2STX2Lft 671
- I2STX2Rt 671
- I2STXLinCtrlData 672
- I2STXCtrl 672
- I2STXWrdLen 673
- I2STX0En 673
- I2STX1En 674
- I2STX2En 674
- 21.7.2 I 675
- S RX Registers 675
- I2SRX0Rt 676
- I2SRX1Lft 676
- I2SRX1Rt 677
- I2SRX2Lft 677
- I2SRX2Rt 678
- I2SRXLinCtrlData 678
- I2SRXCtrl 679
- I2SRXWrdLen 679
- I2SRX0En 680
- I2SRX1En 680
- 21.7.3 I 681
- I2STXClkCfg 682
- I2SRXClkCfg 683
- 21-28 DS785UM1 684
- 21.7.4 I 685
- S Global Status Registers 685
- 21-30 DS785UM1 686
- I2SGlCtrl 687
- 21-32 DS785UM1 688
- Chapter 22 689
- 22AC’97 Controller 689
- 22-2 DS785UM1 690
- AC’97 Controller 690
- 22.2.1 Channel Interrupts 691
- 22.2.2 Global Interrupts 692
- 22.3 System Loopback Testing 693
- 22.4 Registers 693
- 22-6 DS785UM1 694
- Address Type Name Description 694
- AC97RXCRx 695
- DS785UM1 22-9 697
- CM RSIZE Data to CPU 697
- AC97TXCRx 698
- DS785UM1 22-11 699
- AC97SRx 700
- AC97RISRx 701
- AC97ISRx 702
- AC97IEx 703
- AC97S1Data 703
- AC97S2Data 704
- AC97S12Data 705
- AC97RGIS 706
- AC97GIS 707
- AC97IM 708
- AC97GCR 709
- AC97Reset 710
- AC97SYNC 711
- AC97GCIS 712
- Chapter 23 713
- 23Synchronous Serial Port 713
- 23.3 SSP Functionality 714
- 23.4 SSP Pin Multiplex 714
- 23.5 Configuring the SSP 714
- 23.5.2 Master/Slave Mode 715
- (1 + scr)) 715
- 23.5.4 Frame Format 715
- 23.5.5 Texas Instruments 716
- 23.5.6 Motorola 717
- SPI Frame Format 717
- 23-6 DS785UM1 718
- Synchronous Serial Port 718
- DS785UM1 23-7 719
- DS785UM1 23-9 721
- Microwire 722
- Frame Format 722
- DS785UM1 23-11 723
- 23-12 DS785UM1 724
- 23.6 Registers 725
- DS785UM1 23-17 729
- SSPCPSR 730
- SSPIIR / SSPICR 730
- 23-20 DS785UM1 732
- Chapter 24 733
- 24Pulse Width Modulator 733
- 24.2.1.1 Example 734
- 24.2.2 Programming Rules 735
- PWMxTermCnt 736
- PWMxDutyCycle 736
- PWMxInvert 737
- Chapter 25 739
- 25-2 DS785UM1 740
- Analog Touch Screen Interface 740
- 25-4 DS785UM1 742
- DS785UM1 25-5 743
- 25-6 DS785UM1 744
- DS785UM1 25-7 745
- 25-8 DS785UM1 746
- DS785UM1 25-9 747
- 25-10 DS785UM1 748
- DS785UM1 25-11 749
- 25.2.3 Direct Operation 750
- 4/8 wire detect Press 751
- 5 wire detect Press 751
- SAMPLE VBAT 752
- DS785UM1 25-15 753
- 25-16 DS785UM1 754
- Signals Function 754
- 25.3 Registers 755
- TSXYMaxMin 757
- TSXYResult 757
- TSSWLock 759
- TSSetup2 760
- DS785UM1 25-23 761
- 25-24 DS785UM1 762
- Chapter 26 763
- 26Keypad Interface 763
- 26.2 Theory of Operation 764
- DS785UM1 26-3 765
- Keypad Interface 765
- 26-4 DS785UM1 766
- 26.2.2 Scan and Debounce 767
- 26.2.3 Interrupt Generation 767
- 26.2.4 Low Power Mode 768
- 26.2.5 Three-key Reset 768
- KeyDiagnostic 770
- Chapter 27 771
- 27IDE Interface 771
- 27.2.2 PIO Operations 773
- 27.2.3 MDMA Operations 774
- 27.2.4 UDMA Operations 775
- 27.2.6 UDMA Example 776
- 27.2.7 DMA Request Latency 777
- DS785UM1 27-9 779
- IDE Interface 779
- Mode MAX IDE Device Bandwidth 779
- 27.3 Registers 780
- IDEMDMAOp 782
- IDEUDMAOp 782
- IDEDataOut 783
- IDEDataIn 784
- IDEMDMADataOut 784
- IDEMDMADataIn 785
- IDEUDMADataOut 785
- IDEUDMADataIn 786
- IDEUDMASts 786
- IDEUDMADebug 788
- IDEUDMAWrBufSts 788
- IDEUDMARdBufSts 789
- 27-20 DS785UM1 790
- Chapter 28 791
- 28GPIO Interface 791
- 28.1.1 Memory Map 793
- 28-4 DS785UM1 794
- GPIO Interface 794
- (Ports C, D, E, G, H) 794
- 28.1.3 Reset 795
- 28.1.4 GPIO Pin Map 796
- 28.2 Registers 799
- PxDDR 801
- GPIOxIntEn 802
- GPIOxIntType1 802
- GPIOxIntType2 803
- GPIOxEOI 804
- GPIOxDB 804
- RawIntStsX 805
- IntStsX 805
- EEDrive 806
- 28-18 DS785UM1 808
- Chapter 29 809
- 29Security 809
- 29.4 Registers 810
- Chapter 30 811
- 30Glossary 811
- Chapter 31 813
- 31EP93XX Register List 813
- 31-2 DS785UM1 814
- EP93XX Register List 814
- Register Name Page Number 814
- DS785UM1 31-3 815
- 31-4 DS785UM1 816
- DS785UM1 31-5 817
- 31-6 DS785UM1 818
- DS785UM1 31-7 819
- 31-8 DS785UM1 820
- DS785UM1 31-9 821
- 31-10 DS785UM1 822
- DS785UM1 31-11 823
- 31-12 DS785UM1 824
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