Motorola ColdFire MCF5281 User Manual page 9

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Number
9.1 Features ............................................................................................................... 9-1
9.2 Modes of Operation ............................................................................................ 9-1
9.2.1 Normal PLL Mode.......................................................................................... 9-1
9.2.2 1:1 PLL Mode................................................................................................. 9-2
9.2.3 External Clock Mode ...................................................................................... 9-2
9.3 Low-power Mode Operation .............................................................................. 9-2
9.4 Block Diagram .................................................................................................... 9-3
9.5 Signal Descriptions ............................................................................................. 9-4
9.5.1 EXTAL ........................................................................................................... 9-4
9.5.2 XTAL.............................................................................................................. 9-5
9.5.3 CLKOUT ........................................................................................................ 9-5
9.5.4 CLKMOD[1:0] ............................................................................................... 9-5
9.5.5 RSTOUT......................................................................................................... 9-5
9.6 Memory Map and Registers................................................................................ 9-5
9.6.1 Module Memory Map..................................................................................... 9-5
9.6.2 Register Descriptions...................................................................................... 9-6
9.7 Functional Description...................................................................................... 9-10
9.7.1 System Clock Modes .................................................................................... 9-10
9.7.2 Clock Operation During Reset...................................................................... 9-11
9.7.3 System Clock Generation ............................................................................. 9-11
9.7.4 PLL Operation .............................................................................................. 9-12
10.1 68K/ColdFire Interrupt Architecture Overview ............................................... 10-1
10.1.1 Interrupt Controller Theory of Operation ..................................................... 10-3
10.2 Memory Map .................................................................................................... 10-5
10.3 Register Descriptions ........................................................................................ 10-6
10.3.1 Interrupt Pending Registers (IPRHn, IPRLn) ............................................... 10-6
10.3.2 Interrupt Mask Register (IMRHn, IMRLn) .................................................. 10-8
10.3.3 Interrupt Force Registers (INTFRCHn, INTFRCLn) ................................... 10-9
10.3.4 Interrupt Request Level Register (IRLRn) ................................................. 10-10
10.3.5 Interrupt Acknowledge Level and Priority Register (IACKLPRn) ............ 10-11
10.3.6 Interrupt Control Register (ICRnx, (x = 1, 2,..., 63)).................................. 10-11
10.3.7 Software and Level n IACK Registers (SWIACKR, L1IACK-L7IACK). 10-15
10.4 Prioritization Between Interrupt Controllers .................................................. 10-16
10.5 Low-Power Wakeup Operation ...................................................................... 10-17
MOTOROLA
CONTENTS
Title
Chapter 9
Clock Module
Chapter 10
Interrupt Controller Modules
Contents
Page
Number
ix