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DSP56366 24-Bit Digital Signal Processor User Manual, Rev. 4
Freescale Semiconductor 11-1
11 Timer/ Event Counter
11.1 Introduction
This section describes the internal timer/event counter in the DSP56366. Each of the three timers (timer 0,
1 and 2) can use internal clocking to interrupt the DSP56366 or trigger DMA transfers after a specified
number of events (clocks). In addition, timer 0 provides external access via the bidirectional signal TIO0.
When the TIO0 pin is configured as an input, timer 0 can count or capture events, or measure the width or
period of an external signal. When TIO0 is configured as an output, timer 0 can function as a timer, a
watchdog timer, or a pulse width modulator. TIO0 can also function as a GPIO signal.
11.2 Timer/Event Counter Architecture
The timer module is composed of a common 21-bit prescaler and three independent general purpose 24-bit
timer/event counters, each having its own register set.
11.2.1 Timer/Event Counter Block Diagram
Figure 11-1 shows a block diagram of the timer/event counter. This module includes a 24-bit timer
prescaler load register (TPLR), a 24-bit timer prescaler count register (TPCR), a 21-bit prescaler clock
counter, and three timers. Each of the three timers may use the prescaler clock as its clock source.
- Processor 1
- Contents 3
- TOC-2 Freescale Semiconductor 4
- Freescale Semiconductor TOC-3 5
- TOC-4 Freescale Semiconductor 6
- Freescale Semiconductor TOC-5 7
- TOC-6 Freescale Semiconductor 8
- Freescale Semiconductor TOC-7 9
- TOC-8 Freescale Semiconductor 10
- Freescale Semiconductor TOC-9 11
- List of Figures 15
- LOF-2 Freescale Semiconductor 16
- Freescale Semiconductor LOF-3 17
- LOF-4 Freescale Semiconductor 18
- List of Tables 19
- LOT-2 Freescale Semiconductor 20
- Freescale Semiconductor i 21
- Manual Conventions 22
- ; ~SS0 as PC3 for GPIO line 3 23
- 1 DSP56366 Overview 25
- 1.2 DSP56300 Core Description 26
- Freescale Semiconductor 1-3 27
- 1.4.1 Data ALU 28
- Freescale Semiconductor 1-5 29
- 1.4.4 Internal Buses 30
- 1.4.8 On-Chip Memory 31
- 1.5 Peripheral Overview 32
- 1.5.1 Host Interface (HDI08) 33
- 1.5.3 Triple Timer (TEC) 33
- Peripheral Overview 34
- 1-10 Freescale Semiconductor 34
- 2.1 Signal Groupings 35
- DSP56366 36
- 2.2 Power 37
- 2.3 Ground 37
- 2.4 Clock and PLL 38
- 2.5.1 External Address Bus 39
- 2.5.2 External Data Bus 39
- 2.5.3 External Bus Control 39
- Table 2-9 Host Interface 43
- 2.8 Serial Host Interface 46
- 2.12 Timer 56
- 2.13 JTAG/OnCE Interface 56
- 3 Memory Configuration 57
- Data and Program Memory Maps 59
- Freescale Semiconductor 3-3 59
- 3-4 Freescale Semiconductor 60
- Freescale Semiconductor 3-5 61
- 3-6 Freescale Semiconductor 62
- Freescale Semiconductor 3-7 63
- 3-8 Freescale Semiconductor 64
- Freescale Semiconductor 3-9 65
- 3-10 Freescale Semiconductor 66
- 3.1.1 Reserved Memory Spaces 67
- 3.1.3 Bootstrap ROM 67
- 3.2 Internal I/O Memory Map 68
- 4 Core Configuration 75
- Operating Mode Register (OMR) 76
- 4-2 Freescale Semiconductor 76
- M_PAE equ 23 ; Patch Enable 77
- 4.3 Operating Modes 78
- Interrupt Priority Registers 81
- Freescale Semiconductor 4-7 81
- 4.5 DMA Request Sources 86
- 4.6 PLL Initialization 87
- 4-18 Freescale Semiconductor 92
- 5.1 Introduction 93
- 5.2 Programming Model 93
- Programming Model 94
- 5-2 Freescale Semiconductor 94
- 6 Host Interface (HDI08) 95
- 6.2.2 Interface - Host Side 96
- 6.3 HDI08 Host Port Signals 97
- 6.4 HDI08 Block Diagram 98
- 6-6 Freescale Semiconductor 100
- Table 6-4 HDI08 IRQ 102
- Freescale Semiconductor 6-13 107
- Figure 6-7 Single strobe bus 108
- Freescale Semiconductor 6-15 109
- 6-18 Freescale Semiconductor 112
- Table 6-11 HDRQ 115
- 6.6.3.6 ISR Reserved Bits 5-6 119
- 6.7.2 Polling 122
- 6.7.3 Servicing Interrupts 123
- Servicing The Host Interface 124
- 6-30 Freescale Semiconductor 124
- 7 Serial Host Interface 125
- 7.3 SHI Clock Generator 126
- I/O Shift Register (IOSR) 127
- 7-4 Freescale Semiconductor 128
- 7-6 Freescale Semiconductor 130
- 7.4.4.2 HSAR I 131
- 7-8 Freescale Semiconductor 132
- Freescale Semiconductor 7-9 133
- Table 7-4 SHI Data Size 135
- Freescale Semiconductor 7-13 137
- Freescale Semiconductor 7-15 139
- 7.6 Characteristics Of The I 140
- 7.6.1 Overview 141
- C Data Transfer Formats 142
- 7.7.1 SPI Slave Mode 143
- 7.7.2 SPI Master Mode 144
- C Slave Mode 145
- 7.7.3.2 Transmit Data In I 146
- C Master Mode 147
- 7.7.4.1 Receive Data in I 148
- 7.7.4.2 Transmit Data In I 148
- Freescale Semiconductor 7-25 149
- 7-26 Freescale Semiconductor 150
- 8.1 Introduction 151
- Introduction 152
- 8-2 Freescale Semiconductor 152
- ESAI Data and Control Pins 153
- Freescale Semiconductor 8-3 153
- 8-4 Freescale Semiconductor 154
- 8.3 ESAI Programming Model 157
- Figure 8-2 TCCR Register 158
- ESAI Programming Model 159
- Freescale Semiconductor 8-9 159
- 8-10 Freescale Semiconductor 160
- 8-12 Freescale Semiconductor 162
- Figure 8-5 TCR Register 163
- 8-14 Freescale Semiconductor 164
- Freescale Semiconductor 8-15 165
- Normal Mode 167
- Network Mode 167
- Figure 8-14 168
- 8-20 Freescale Semiconductor 170
- Freescale Semiconductor 8-21 171
- Figure 8-8 RCCR Register 172
- Freescale Semiconductor 8-23 173
- Figure 8-9 RCR Register 176
- Freescale Semiconductor 8-27 177
- Freescale Semiconductor 8-31 181
- Figure 8-10 SAICR Register 182
- Freescale Semiconductor 8-33 183
- 8-34 Freescale Semiconductor 184
- Figure 8-12 SAISR Register 185
- 8-36 Freescale Semiconductor 186
- Freescale Semiconductor 8-37 187
- (a) Receive Registers 188
- (b) Transmit Registers 188
- 8-40 Freescale Semiconductor 190
- Figure 8-15 TSMA Register 191
- Figure 8-16 TSMB Register 191
- Figure 8-17 RSMA Register 192
- Figure 8-18 RSMB Register 192
- 8.4 Operating Modes 193
- 8.4.3 ESAI Interrupt Requests 194
- Operating Modes 195
- Freescale Semiconductor 8-45 195
- 8.4.5 Serial I/O Flags 196
- 8.5 GPIO - Pins and Registers 197
- Figure 8-19 PCRC Register 198
- Figure 8-20 PRRC Register 198
- Figure 8-21 PDRC Register 199
- ESAI Initialization Examples 200
- 8-50 Freescale Semiconductor 200
- 9.1 Introduction 201
- Clock / Frame Sync 202
- Generators 202
- Control Logic 202
- ESAI_1 Data and Control Pins 203
- Freescale Semiconductor 9-3 203
- 9.3 ESAI_1 Programming Model 204
- Figure 9-2 EMUXR Register 205
- Figure 9-3 TCCR_1 Register 206
- TPSR TPM0 - TPM7 207
- TFP0 - TFP3 207
- Figure 9-6 TCR_1 Register 208
- Figure 9-7 RCCR_1 Register 209
- Figure 9-8 RCR_1 Register 210
- Figure 9-9 SAICR_1 Register 210
- Figure 9-10 SAISR_1 Register 211
- Figure 9-11 TSMA_1 Register 212
- Figure 9-12 TSMB_1 Register 212
- 9.4 Operating Modes 213
- 9.5 GPIO - Pins and Registers 213
- Figure 9-15 PCRE Register 214
- Figure 9-16 PRRE Register 214
- Figure 9-17 PDRE Register 215
- GPIO - Pins and Registers 216
- 9-16 Freescale Semiconductor 216
- 10 Digital Audio Transmitter 217
- 10.2 DAX Signals 218
- 10.3 DAX Functional Overview 218
- 10.4 DAX Programming Model 219
- DAX Internal Architecture 221
- Freescale Semiconductor 10-5 221
- 10-6 Freescale Semiconductor 222
- 10-8 Freescale Semiconductor 224
- 10.5.9 DAX Biphase Encoder 225
- 10.5.11 DAX Clock Multiplexer 225
- 10.5.12 DAX State Machine 226
- 10.6.4 DAX operation with DMA 227
- $FFFFFF; offset=-1 227
- 10-12 Freescale Semiconductor 228
- 11 Timer/ Event Counter 231
- 11-2 Freescale Semiconductor 232
- Freescale Semiconductor 11-3 233
- 76543210 234
- 11.3.1 Prescaler Counter 235
- 11.3.2.3 TPLR Reserved Bit 23 236
- Freescale Semiconductor 11-7 237
- 11-10 Freescale Semiconductor 240
- Freescale Semiconductor 11-11 241
- 11.4 Timer Modes of Operation 242
- 11.4.1 Timer Modes 243
- 11.4.1.2 Timer Pulse (Mode 1) 244
- 11.4.2.1 Measurement Accuracy 246
- 11.4.4 Watchdog Modes 249
- 11.4.5 Reserved Modes 250
- 11.4.6 Special Cases 250
- 11.4.7 DMA Trigger 251
- Timer Modes of Operation 252
- 11-22 Freescale Semiconductor 252
- Freescale Semiconductor A-1 253
- DSP56366 Bootstrap Program 254
- A-2 Freescale Semiconductor 254
- Freescale Semiconductor A-3 255
- A-4 Freescale Semiconductor 256
- Freescale Semiconductor A-5 257
- A-6 Freescale Semiconductor 258
- Freescale Semiconductor A-7 259
- A-8 Freescale Semiconductor 260
- Freescale Semiconductor A-9 261
- A-10 Freescale Semiconductor 262
- Freescale Semiconductor A-11 263
- A-12 Freescale Semiconductor 264
- Freescale Semiconductor A-13 265
- A-14 Freescale Semiconductor 266
- Appendix B Equates 267
- B-2 Freescale Semiconductor 268
- Freescale Semiconductor B-3 269
- B-4 Freescale Semiconductor 270
- Freescale Semiconductor B-5 271
- B-6 Freescale Semiconductor 272
- Freescale Semiconductor B-7 273
- B-8 Freescale Semiconductor 274
- Freescale Semiconductor B-9 275
- B-10 Freescale Semiconductor 276
- Freescale Semiconductor B-11 277
- B-12 Freescale Semiconductor 278
- Freescale Semiconductor B-13 279
- B-14 Freescale Semiconductor 280
- Freescale Semiconductor B-15 281
- B-16 Freescale Semiconductor 282
- Freescale Semiconductor B-17 283
- B-18 Freescale Semiconductor 284
- Freescale Semiconductor B-19 285
- B-20 Freescale Semiconductor 286
- Freescale Semiconductor B-21 287
- B-22 Freescale Semiconductor 288
- Freescale Semiconductor B-23 289
- B-24 Freescale Semiconductor 290
- Freescale Semiconductor B-25 291
- B-26 Freescale Semiconductor 292
- Freescale Semiconductor B-27 293
- B-28 Freescale Semiconductor 294
- Freescale Semiconductor B-29 295
- B-30 Freescale Semiconductor 296
- Freescale Semiconductor B-31 297
- B-32 Freescale Semiconductor 298
- Freescale Semiconductor B-33 299
- B-34 Freescale Semiconductor 300
- Appendix C JTAG BSDL 301
- JTAG BSDL 302
- C-2 Freescale Semiconductor 302
- Freescale Semiconductor C-3 303
- C-4 Freescale Semiconductor 304
- Freescale Semiconductor C-5 305
- C-6 Freescale Semiconductor 306
- Freescale Semiconductor C-7 307
- C-8 Freescale Semiconductor 308
- D.1 Introduction 309
- D.2 Internal I/O Memory Map 309
- D-12 Freescale Semiconductor 320
- Freescale Semiconductor D-13 321
- D-14 Freescale Semiconductor 322
- D.6 Programming Sheets 323
- Central Processor 324
- CENTRAL PROCESSOR 326
- IRQC Mode 326
- IRQD Mode 326
- = Reserved, Program as 0 327
- MF7 MF5 MF4 MF3 MF2 MF1 MF0 328
- HOST (HDI08) 329
- DSP Side 329
- HCP HRDFHF1 HTDEHF0 330
- HCIE HRIEHF3 HTIEHF2 330
- HDM1HDM2 330
- Host Chip Select Polarity 331
- 0 = HCS Active Low 331
- HTRQ & HRRQ Enable 331
- 1 = HCS Active High 331
- Processor Side 333
- = Reserved, write as 0 335
- Application: 336
- Programmer: 336
- Sheet 2 of 3 336
- Programming Sheets 337
- Freescale Semiconductor D-29 337
- X: $FFFFB5 Reset: $000000 339
- X: $FFFFB8 Reset: $000000 340
- X: $FFFFB7 Reset: $000000 341
- X: $FFFFB4 Reset: $000000 342
- SAISR - ESAI Status Register 343
- X: $FFFFB3 Reset $000000 343
- Y: $FFFFAF Reset: $000000 344
- Y: $FFFF95 Reset: $000000 346
- Y: $FFFF98 Reset: $000000 347
- Y: $FFFF97 Reset: $000000 348
- Y: $FFFF94 Reset: $000000 349
- Y: $FFFF93 Reset $000000 350
- XCB XUB XVB XCA XUA XVA 351
- D-44 Freescale Semiconductor 352
- 00 Internal CLK/2 353
- 10 Reserved 353
- 11 Reserved 353
- 1514131211109876543210 356
- Port B (HDI08) 356
- D-52 Freescale Semiconductor 360
- Numerics 361
- OMR register 6 363
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