80C186EB/80C188EB Microprocessor User's Manual - CEUNES

CONTENTSCHAPTER 4PERIPHERAL CONTROL BLOCK4.1 PERIPHERAL CONTROL REGISTERS........................................................................ 4-14.2 PCB RELOCATION REGISTER.................................................................................... 4-14.3 RESERVED LOCATIONS ............................................................................................. 4-44.4 ACCESSING THE PERIPHERAL CONTROL BLOCK.................................................. 4-44.4.1 Bus Cycles ...............................................................................................................4-44.4.2 READY Signals and Wait States .............................................................................4-44.4.3 F-Bus Operation .......................................................................................................4-54.4.3.1 Writing the PCB Relocation Register ...............................................................4-64.4.3.2 Accessing the Peripheral Control Registers ....................................................4-64.4.3.3 Accessing Reserved Locations .......................................................................4-64.5 SETTING THE PCB BASE LOCATION......................................................................... 4-64.5.1 Considerations for the 80C187 Math Coprocessor Interface ....................................4-7CHAPTER 5CLOCK GENERATION AND POWER MANAGEMENT5.1 CLOCK GENERATION.................................................................................................. 5-15.1.1 Crystal Oscillator .......................................................................................................5-15.1.1.1 Oscillator Operation .........................................................................................5-25.1.1.2 Selecting Crystals ............................................................................................5-55.1.2 Using an External Oscillator ......................................................................................5-65.1.3 Output from the Clock Generator ..............................................................................5-65.1.4 Reset and Clock Synchronization .............................................................................5-65.2 POWER MANAGEMENT............................................................................................. 5-105.2.1 Idle Mode ................................................................................................................5-115.2.1.1 Entering Idle Mode ........................................................................................5-115.2.1.2 Bus Operation During Idle Mode ...................................................................5-135.2.1.3 Leaving Idle Mode .........................................................................................5-145.2.1.4 Example Idle Mode Initialization Code ..........................................................5-155.2.2 Powerdown Mode ...................................................................................................5-165.2.2.1 Entering Powerdown Mode ...........................................................................5-175.2.2.2 Leaving Powerdown Mode ............................................................................5-185.2.3 Implementing a Power Management Scheme ........................................................5-19CHAPTER 6CHIP-SELECT UNIT6.1 COMMON METHODS FOR GENERATING CHIP-SELECTS....................................... 6-16.2 CHIP-SELECT UNIT FEATURES AND BENEFITS ...................................................... 6-16.3 CHIP-SELECT UNIT FUNCTIONAL OVERVIEW ......................................................... 6-26.4 PROGRAMMING........................................................................................................... 6-56.4.1 Initialization Sequence ..............................................................................................6-66.4.2 Start Address ..........................................................................................................6-106.4.3 Stop Address ..........................................................................................................6-10v