® R8822 RDC RISC DSP Controller R8822 16-Bit RISC Microcontroller User’s Manual RDC RISC DSP Controller RDC Semiconductor Co., Ltd http:\\www.rdc.com.tw Tel. 886-3-666-2866 Fax 886-3-563-1498 RDC Semiconductor Co. Final Version 1.6 Subject to change without notice January 5, 2004 1 ® R8822 RDC RISC DSP Controller Contents 1. Features ......................................................................................................................... 5 2. Block Diagram .............................................................................................................. 6 3. Pin Configuration ......................................................................................................... 7 3.1 PQFP......................................................................................................................................7 3.2 LQFP......................................................................................................................................8 3.3 R8822 PQFP & LQFP Pin Out Table ....................................................................................9 4. Pin Description............................................................................................................ 10 4.1 R8822 I/O Characteristics of Each Pin................................................................................16 5. Basic Application System Block ................................................................................ 19 6. Read/Write Timing Diagram..................................................................................... 21 7. Crystal Characteristics............................................................................................... 23 8. Execution Unit............................................................................................................. 24 8.1 General Registers.................................................................................................................24 8.2 Segment Registers...............................................................................................................25 8.3 Instruction Pointer and Status Flags Registers ....................................................................25 8.4 Address Generation.............................................................................................................27 9. Peripheral Control Block Registers.......................................................................... 28 10. Power Save & Power Down ................................................................................ 30 11. Reset ...................................................................................................................... 33 12. Bus Interface Unit................................................................................................ 35 12.1 Memory and I/O Interface ...................................................................................................35 RDC Semiconductor Co. Final Version 1.6 Subject to change without notice January 5, 2004 2 ® R8822 RDC RISC DSP Controller 12.2 Data Bus...............................................................................................................................36 12.3 Wait States ...........................................................................................................................36 12.4 Bus Hold..............................................................................................................................36 12.5 Bus Width ............................................................................................................................38 13. Chip Select Unit ................................................................................................... 40 13.1 UCS ....................................................................................................................................40 13.2 LCS .....................................................................................................................................41 13.3 MCSx ...................................................................................................................................42 13.4 PCSx ...................................................................................................................................44 14. Interrupt Controller Unit.................................................................................... 46 14.1 Master Mode and Slave Mode.............................................................................................46 14.2 Interrupt Vector, Type and Priority ......................................................................................48 14.3 Interrupt Requests................................................................................................................48 14.4 Interrupt Acknowledge........................................................................................................48 14.5 Programming the Registers..................................................................................................49 15. DMA Unit ............................................................................................................. 63 15.1 DMA Operation...................................................................................................................63 15.2 External Requests................................................................................................................68 15.3 Serial Port/DMA Transfer....................................................................................................70 16. Timer Control Unit.............................................................................................. 71 16.1 Timer/Counter Unit Output Mode .......................................................................................75 17. Watchdog Timer .................................................................................................. 76 18. Asynchronous Serial Ports.................................................................................. 78 18.1 Serial Port Flow Control......................................................................................................78 18.1.1 DCE/DTE Protocol......................................................................................................79 18.1.2 CTS/RTR Protocol.......................................................................................................79 18.2 DMA Transfer to/from a Serial Port Function.....................................................................80 RDC Semiconductor Co. Final Version 1.6 Subject to change without notice January 5, 2004 3 ® R8822 RDC RISC DSP Controller 18.3 The Asynchronous Mode Description .................................................................................80 19. PIO Unit................................................................................................................ 85 19.1 PIO Multi-Function Pin List Table ......................................................................................85 20. DRAM Controller................................................................................................ 89 20.1 Programmable Read/ Write Cycle Time ..............................................................................89 20.2 Programmable Refresh Control...........................................................................................90 21. Instruction Set OPCodes and Clock Cycles ...................................................... 91 22. R8822 Execution Timings ................................................................................... 95 23. DC Characteristics............................................................................................... 96 23.1 Absolute Maximum Rating..................................................................................................96 23.2 Recommended DC Operating Conditions ...........................................................................96 23.3 DC Electrical Characteristics...............................................................................................96 24. AC Characteristics............................................................................................... 97 25. Thermal Characteristics ....................................................................................111 26. Package Information ......................................................................................... 112 26.1 PQFP..................................................................................................................................112 26.2 LQFP..................................................................................................................................113 27. Revision History................................................................................................. 114 RDC Semiconductor Co. Final Version 1.6 Subject to change without notice January 5, 2004 4 ® R8822 RDC RISC DSP Controller 16-Bit Microcontroller with 8-bit or 16-bit dynamic external data bus 1. Features Supports 32 PIO pins Five-stage pipeline Supports 64kx16, 128kx16, 256kx16 EDO or FP RISC architecture DRAM with auto-refresh control Static Design & Synthesizable design Three independent 16-bit timers and one Bus interface independent programmable watchdog timer - Multiplexed address and Data bus The Interrupt controller with