ARM ARM926EJ-S User's Guide Page 149
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Hardware Description
ARM DUI 0224I Copyright © 2003-2010 ARM Limited. All rights reserved. 3-87
3.19 User switches and LEDs
The FPGA provides a switch and LED register that enables you to read the
general-purpose pushbutton switch and the user switches (S6) and light the user LEDs
(located next to switch S6). See Figure 1-1 on page 1-3 for the location of the switches
and LEDs. Figure 3-37 shows the interface.
Note
Switch S6-1 and S6-2 are used to control the Boot Monitor. See Boot Monitor
configuration on page 2-7.
Set bits [7:0] in the SYS_LED register at
0x10000008
to illuminate LEDs 7–0. The state
of the user switches S6[8:1] is present on bits [7:0] of the SYS_SW register at
0x10000004
.
The state of the general-purpose pushbutton S3 can be read from bit 4 of the SYS_MISC
register at
0x10000060
. Setting bit 3 of SYS_MISC causes a S3 depression to generate a
PWRFAIL interrupt. The interrupt can be used to test auto-shutdown code or to awaken
the processor from sleep mode. See Miscellaneous System Control Register, SYS_MISC
on page 4-36.
Figure 3-37 Switch and LED interface
- ARM926EJ-S 1
- CE Declaration of Conformity 4
- Contents 5
- List of Tables 10
- List of Figures 13
- User Guide 13
- • Feedback on page xxv 17
- About this manual 18
- Preface 19
- Feedback 25
- Chapter 1 27
- Introduction 27
- 1.1 About the PB926EJ-S 28
- Figure 1-1 PB926EJ-S layout 29
- 1.2 PB926EJ-S architecture 30
- PB926EJ-S 32
- 1.3 Precautions 35
- Chapter 2 37
- Getting Started 37
- 2.2.2 LED indicators 41
- SET BOOTSCRIPT 43
- Figure 2-2 JTAG connection 44
- 2.5 Supplying power 49
- Q, quit, qui, qu, or q 50
- Release_ARM_Little_Endian 55
- Chapter 3 63
- • USB interface on page 3-92 64
- • UART interface on page 3-88 64
- 0xFFFF0000 69
- Figure 3-4 AHB map 75
- Figure 3-6 Memory devices 77
- 3.2 FPGA 79
- 0x200000 81
- 0x400000 81
- 0x600000 81
- Progcards 83
- 3.3 Reset controller 84
- 3.3.4 Reset signals 91
- 3.4 Power supply control 95
- 3.5 Clock architecture 97
- Hardware Description 100
- ARM926EJ-S Dev. Chip 101
- Schematics 116
- Figure 3-24 Audio interface 119
- 3.7 Character LCD controller 121
- Figure 3-25 Character display 122
- 3.8 CLCDC interface 123
- Figure 3-26 Display interface 124
- Figure 3-27 DMA channels 128
- 3.10 Ethernet interface 130
- 3.11 GPIO interface 133
- 3.12 Interrupts 134
- Figure 3-31 KMI block diagram 136
- Figure 3-32 MMI interface 139
- 3.15 PCI interface 141
- 3.16 Serial bus interface 142
- Figure 3-35 SCI block diagram 144
- Figure 3-36 SSP block diagram 146
- 3.19 User switches and LEDs 149
- 3.20 UART interface 150
- Figure 3-39 UART0 interface 151
- Reference Manual 152
- 3.21 USB interface 154
- TransDimension OTG243 155
- Chapter 4 167
- Programmer’s Reference 167
- 4.1 Memory map 169
- Development Chip 173
- 0x101E0000 177
- 0x34000000–0x37FFFFFF 177
- Booting from NOR flash 1 178
- LOW) are shown in Figure 4-3 179
- Memory banks 182
- 0x10000000 183
- 0x10000004 187
- 4.3.3 LED Register, SYS_LED 188
- Use the SYS_LED register at 188
- 0x1000000C 189
- 0x1000001C 189
- 0x0000A05F 189
- 0x10000020 190
- Figure 4-10 SYS_CFGDATA1 191
- SYS_CFGDATA2 at address 192
- 0x10000040 197
- 0x10000044 197
- 0x10000048 197
- 0x1000004C 198
- 0x10000050 198
- 0x10000054 200
- 0x10000058 200
- 0x1000005C 202
- 0x10000060 202
- 0x10000064 203
- 0x10000068 203
- 0x1000006C 203
- 0x1000008C 205
- 0x1000009C 205
- 0x100000C0 206
- 0x100000C4 206
- 0x100000C8 206
- 0x100000CC 206
- 0x100000D0 206
- 0x101D0000 207
- 0x10004000 208
- 0x10008000 210
- 0x10120000 213
- 0x10130000 218
- 0x10010000 221
- 0x101E4000 222
- 0x101E5000 222
- 0x101E6000 222
- 0x101E7000 222
- 0x101E8000 222
- 0x10140000 223
- 0x10003000 223
- 0x10003020 228
- 0x10003024 228
- PIC_SCR31 231
- // . . 232
- 0x10006000 233
- 0x10007000 233
- 0x40000000 234
- 4.14 MOVE video coprocessor 235
- 0x10005000 236
- 0x1000B000 236
- 0x10110000 237
- 4.17 PCI controller 240
- 0x41000000 241
- 0x6FFFFFFF 241
- 0x1000101C 242
- 0x10001010 242
- 0x10001014 242
- 0x10001018 242
- PCI_SMAPx registers 244
- 4.17.2 PCI configuration 245
- 0x42000000 246
- 0x10002000 252
- 0x10002004 252
- 0xA0 0xA1 253
- 0xA2 0xA3 253
- 0xD0 0xD1 253
- 0x101F0000 254
- 0x1000A000 254
- 0x101F4000 255
- 0x10100000 257
- 0x303121 260
- 0x101E000 261
- 0x101E2000 262
- 0x101E2020 262
- 0x101E3000 262
- 0x101E3020 262
- 0x101F1000 263
- 0x101F2000 263
- 0x101F3000 263
- 0x10009000 263
- 0x10020000 265
- 0x10020080 265
- 0x10020100 265
- 0x101E1000 267
- Appendix A 269
- Signal Descriptions 269
- A.2 Smart Card interface 271
- A.3 UART interface 273
- A.4 USB interface 274
- A.5 Audio CODEC interface 275
- Figure A-8 MMC card 276
- A.7 CLCD display interface 278
- A.8 VGA display interface 281
- A.9 GPIO interface 282
- A.11 Ethernet interface 284
- A.12.2 HDRY signals 290
- A.12.3 HDRZ 294
- 2 USBDM 304
- 3 USBDP 304
- A.13.4 Trace connector pinout 305
- SSP connector 306
- Appendix B 309
- Specifications 309
- B.1 Electrical specification 310
- B.2 Clock rate restrictions 313
- B.2.1 AHB bus timing 314
- 35MHz for a 314
- of 28.5ns) 314
- B.3 Mechanical details 317
- Appendix C 319
- Enable V+ 328
- Selftest 329
- Y positions 330
- C.4 Connectors 333
- C.5 Mechanical layout 337
- Appendix D 339
- PCI Backplane and Enclosure 339
- PCI controller on page 4-74) 341
- D.2 Backplane hardware 344
- D.2.1 JTAG signals 347
- D.3 Connectors 348
- D.3.3 JTAG connector 350
- Appendix E 351
- Memory Expansion Boards 351
- Expansion connector J13 352
- Expansion connector 353
- E.2 Fitting a memory board 355
- E.3 EEPROM contents 356
- Contents Contents 358
- E.4 Connector pinout 363
- E.5 Mechanical layout 370
- Appendix F 371
- RealView Logic Tile 371
- F.3 Header connectors 374
- Clock generators and crystals 380
- 0x14000000 382
- 0x1F000000 382
- Appendix G 385
- ARM-ARM-DIR 389
- VPB926EJ-S USB 389
- G.4.1 Global Properties 395
- G.4.2 Device Properties 396
- G.4.3 Semihosting Properties 397
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