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5-36
DS785U
M1
Copyright 2007
Cirrus Logic
System C
ontroller
EP93xx User’s
Guide
5
5
5
1
2
...
157
158
159
160
161
162
163
164
165
166
167
...
823
824
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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