Cypress EZ-USB Series 2100 Service Manual Page 279
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EZ-USB TRM v1.9 Appendix A: 8051 Introduction A - 5
A.6 8051 Core/DS80C320 Differences
The 8051 core is similar to the DS80C320 in terms of hardware features and instruction cycle
timing. However, there are some important differences between the 8051 core and the
DS80C320.
A.6.1 Serial Ports
The 8051 core does not implement serial port framing error detection and does not implement
slave address comparison for multiprocessor communications. Therefore, the 8051 core also
does not implement the following SFRs: SADDR0, SADDR1, SADEN0, and SADEN1.
A.6.2 Timer 2
The 8051 core does not implement Timer 2 downcounting mode or the downcount enable bit
(TMOD2, bit 0). Also, the 8051 core does not implement Timer 2 output enable (T2OE) bit
(TMOD2, bit 1). Therefore, the TMOD2 SFR is also not implemented in the 8051 core.
Also, the 8051 core Timer 2 overflow output is active for one clock cycle. In the DS80C320,
the Timer 2 overflow output is a square wave with a 50% duty cycle.
A.6.3 Timed Access Protection
The 8051 core does not implement timed access protection and therefore, does not implement
the TA SFR.
A.6.4 Watchdog Timer
The EZ-USB/8051 does not implement a watchdog timer.
- Technical Reference 1
- Technical Support: 3
- Phone: (858) 613-7929 3
- E-mail: [email protected] 3
- Website: 3
- 1 Introducing EZ-USB 18
- Figure 1-3. USB Packets 21
- Table 1-1. USB PIDs 21
- Interface 27
- 1.20 Pin Descriptions 35
- 2 EZ-USB CPU 46
- Figure 2-1. 8051 Registers 48
- Table 2-1. EZ-USB Interrupts 49
- 2.9 SFRs 51
- 3 EZ-USB Memory 54
- Inside EZ-USB Outside EZ-USB 57
- Inside EZ-USB 60
- Outside EZ-USB 60
- 4 EZ-USB Input/Output 62
- Alternate Function Input 65
- 4.3 IO Port Registers 66
- Figure 4-5. General I 67
- CTransfer 67
- Figure 4-6. Addressing an I 68
- CPeripheral 68
- ID1 ID0 Meaning 75
- 0 0 No EEPROM detected 75
- 1 1 Not used 75
- Table 5-3. Firmware Download 80
- Table 5-4. Firmware Upload 81
- 00000100 86
- Internal Logic 87
- Field Descriptio n Value 88
- 6 EZ-USB Bulk Transfers 98
- EPnIN Interrupt, INnBSY=0 101
- (INnBC loaded) 101
- Q S R IO 0 EP2 EP1 EP0 108
- 1. Set up the jump table 114
- A15 A14 A13 A12 A11 A10 A9 A8 119
- A7 A6 A5 A4 A3 A2 A1 A0 119
- D7 D6 D5 D4 D3 D2 D1 D0 119
- 7 EZ-USB Endpoint Zero 122
- SETUP Stage 123
- DATA Stage 123
- STATUS Stage 123
- SETUPDAT 124
- Initialization 125
- Data transfer 125
- Interrupt Control 125
- from SETUPDAT. The Field 126
- Interrupt 128
- Table 7-16. Set Configuration 140
- Table 7-17. Get Configuration 140
- Table 7-20. Sync Frame 143
- Table 7-21. Firmware Download 144
- Table 7-22. Firmware Upload 144
- 8051 FIFO 146
- USB FIFO 146
- Initialization Data transfer 147
- Register 150
- 41.66 ns 157
- Figure 8-12. Fast Read Timing 158
- Figure 8-14. ISOCTL Register 160
- Figure 8-15. ZBCOUT Register 161
- 9 EZ-USB Interrupts 164
- "RESUME" 165
- Resume signal 165
- ; interrupt request 166
- 9.4 USB Signaling Interrupts 167
- Address Op-Code Hex Val ue 173
- 0043 Jump 0x02 173
- 0044 AddrH 0xHH 173
- 0045 AddrL 0xLL 173
- Instruction 174
- Figure 9-8. I 176
- 0 0 0 0 0 0 STOPIE 0 178
- EZ-USB Core 180
- 12 EZ-USB Registers 194
- 12.3 Isochronous Data FIFOs 197
- 12.4 Isochronous Byte Counts 199
- R R R R R R R/W R 201
- RV3 RV2 RV1 RV0 0 0 1 1 201
- PINSA Port A Pins 7F99 205
- PINSB Port B Pins 7F9A 205
- OUTC Port C Pins 7F98 205
- - - - - - - UART1 UART0 207
- 0 IV4 IV3 IV2 IV1 IV0 0 0 212
- * AN2122/AN2126 only 214
- 0 0 0 0 0 0 0 0 219
- - BC6 BC5 BC4 BC3 BC2 BC1 BC0 222
- - - - - - - INnBSY INnSTL 225
- - D6 D5 D4 D3 D2 D1 D0 227
- - - - - - - OUTnBSY OUTnSTL 228
- R/W R R R R/W R/W R/W R/W 231
- 0 0 0 0 0 1 0 0 231
- 0 0 0 0 0 FC10 FC9 FC8 234
- 0 FA6 FA5 FA4 FA3 FA2 FA1 FA0 235
- 0 x 0 0 0 0 0 0 236
- FWR# pulses 240
- Bit 1-0: WMOD FWR# Pulse Mode 240
- A9 A8 A7 A6 A5 A4 0 0 243
- 13 EZ-USB AC/DC Parameters 246
- 13.1.5 General Memory Timing 247
- 13.1.6 Program Memory Read 247
- 13.1.7 Data Memory Read 247
- 13.1.8 Data Memory Write 248
- 13.1.9 Fast Data Write 248
- 13.1.10 Fast Data Read 248
- A [15.0] 250
- Fast Transfer Block Diagram 251
- FRD#[00] 252
- FRD#[01] 253
- FWR#[10] 254
- FRD#[11] 255
- 14 EZ-USB Packaging 256
- 14.2 80-Pin PQFP Package 258
- Detail "A" 259
- 14.3 48-Pin TQFP Package 260
- EZ-USB v 1.9 Appendices 262
- Table of Contents 262
- List of Figures 272
- List of Tables 274
- Appendix A: 8051 Introduction 275
- 803x/805x configurations 278
- A.6.1 Serial Ports 279
- A.6.2 Timer 2 279
- A.6.3 Timed Access Protection 279
- A.6.4 Watchdog Timer 279
- 8051_cpu 281
- B.1.1 Memory Organization 282
- B.1.2 Instruction Set 283
- B.1.3 Instruction Timing 289
- B.1.4 CPU Timing 290
- B.1.6 Dual Data Pointers 291
- C.2.1 803x/805x Compatibility 298
- C.2.2 Timers 0 and 1 298
- C.2.3 Mode 0 298
- C.2.4 Mode 1 299
- C.2.5 Mode 2 302
- C.2.6 Mode 3 303
- C.2.7 Timer Rate Control 304
- C.2.8 Timer 2 305
- C.3.1 803x/805x Compatibility 310
- C.3.2 Mode 0 310
- D0 D1 D2 D3 D4 D5 D6 D7 313
- D1 D2 D3 D4 D5 D6 D7 313
- C.3.3 Mode 1 315
- C.3.4 Mode 2 320
- C.3.5 Mode 3 322
- C.3.7 Interrupt SFRs 323
- C.4.1 Interrupt Masking 329
- C.4.2 Interrupt Priorities 330
- C.4.3 Interrupt Sampling 331
- C.4.4 Interrupt Latency 332
- C.4.5 Single-Step Operation 332
- C.6.1 Idle Mode 332
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