HD64570 Datasheet, PDF (15/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

7.2.1 Timer up-counter (TCNT: TCNTH, TCNTL) .................................................... 304
7.2.2 Timer Constant Register (TCONR: TCONRH, TCONRL)................................ 305
7.2.3 Timer Control/Status Register (TCSR) ................................................................ 306
7.2.4 Timer Expand Prescale Register (TEPR) ............................................................. 307
7.3 Operation Timing .............................................................................................................. 308
7.3.1 Timer Increment Timing ...................................................................................... 308
7.3.2 Output Timing ...................................................................................................... 311
7.4 Interrupt ............................................................................................................................. 311
7.5 Operation in System Stop Mode........................................................................................ 312
7.6 Reset Operation ................................................................................................................. 312
7.7 Precautions ........................................................................................................................ 313
Section 8 Wait Controller................................................................................................ 315
8.1 Overview............................................................................................................................ 315
8.1.1 Functions .............................................................................................................. 315
8.1.2 Configuration and Operation................................................................................ 315
8.2 Registers ............................................................................................................................ 316
8.2.1 Physical Address Boundary Registers 0, 1 (PABR0, PABR1) ............................ 316
8.2.2 Wait Control Registers L, M, H (WCRL, WCRM, WCRH) ............................... 321
8.3 Operation ........................................................................................................................... 324
8.3.1 Wait State Insertion Using the WAIT Line.......................................................... 324
8.3.2 Wait State Insertion Using the Register ............................................................... 325
8.4 Operation in System Stop Mode........................................................................................ 325
8.5 Reset Operation ................................................................................................................. 325
8.6 Precautions ........................................................................................................................ 325
Section 9 Application Examples ................................................................................... 327
9.1 Application Examples........................................................................................................ 327
9.1.1 Serial Data Transfer by MPU and DMAC ........................................................... 327
9.1.2 Transmission by Programmed I/O (Bi-Sync Mode) ............................................ 328
9.1.3 Reception by Programmed I/O (Bi-Sync Mode).................................................. 331
9.1.4 Transmission in DMA Chained-Block Transfer Mode
(Bit Synchronous HDLC Mode) .......................................................................... 334
9.1.5 Reception in DMA Chained-Block Transfer Mode
(Bit Synchronous HDLC Mode) .......................................................................... 336
9.2 Application Circuits........................................................................................................... 338
9.2.1 System Configuration Example............................................................................ 338
9.2.2 Bus Arbitration Block .......................................................................................... 338
Section 10 Electrical Characteristics.............................................................................. 341
10.1 Electrical Characteristics of HD64570CP and HD64570F................................................ 341
10.1.1 Absolute Maximum Ratings................................................................................. 341
10.1.2 DC Characteristics................................................................................................ 342
Rev. 0, 07/98, page v of 11