Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 14

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10.3 Multiplexing SIU Pins ................................................................................................... 10-3
10.4 Programming the SIU .................................................................................................... 10-4
10.4.1 Internal Memory Map Register (IMMR)................................................................... 10-4
10.4.2 SIU Module Configuration Register (SIUMCR)....................................................... 10-5
10.4.3 System Protection Control Register (SYPCR) .......................................................... 10-7
10.4.4 Transfer Error Status Register (TESR) ...................................................................... 10-8
10.4.5 Register Lock Mechanism ......................................................................................... 10-9
10.5 System Configuration .................................................................................................. 10-11
10.5.1 Interrupt Structure.................................................................................................... 10-11
10.5.2 Priority of Interrupt Sources .................................................................................... 10-12
10.5.3 SIU Interrupt Processing.......................................................................................... 10-13
10.5.3.1 Nonmaskable Interrupts—IRQ0 and SWT.......................................................... 10-14
10.5.4 Programming the SIU Interrupt Controller.............................................................. 10-14
10.5.4.1 SIU Interrupt Pending Register (SIPEND).......................................................... 10-15
10.5.4.2 SIU Interrupt Mask Register (SIMASK) ............................................................. 10-16
10.5.4.3 SIU Interrupt Edge/Level Register (SIEL) .......................................................... 10-17
10.5.4.4 SIU Interrupt Vector Register (SIVEC) ............................................................... 10-17
10.6 The Bus Monitor .......................................................................................................... 10-19
10.7 Software Watchdog Timer ........................................................................................... 10-20
10.7.1 Software Service Register (SWSR) ......................................................................... 10-21
10.8 The Decrementer.......................................................................................................... 10-22
10.8.1 Decrementer Register (DEC)................................................................................... 10-22
10.9 Timebase ...................................................................................................................... 10-23
10.9.1 Timebase Register (TBU and TBL)......................................................................... 10-23
10.9.2 Timebase Reference Registers (TBREFA and TBREFB) ....................................... 10-24
10.9.3 Timebase Status and Control Register (TBSCR)..................................................... 10-25
10.10 Periodic Interrupt Timer (PIT)..................................................................................... 10-25
10.10.1 Periodic Interrupt Status and Control Register (PISCR) ......................................... 10-26
10.10.2 PIT Count Register (PITC) ...................................................................................... 10-27
10.10.3 PIT Register (PITR)................................................................................................. 10-28
10.11 General SIU Timers Operation .................................................................................... 10-28
10.11.1 Freeze Operation...................................................................................................... 10-28
11.1 Types of Reset................................................................................................................ 11-1
11.1.1 Power-On Reset ......................................................................................................... 11-2
11.1.2 External Hard Reset ................................................................................................... 11-2
11.1.3 Internal Hard Reset .................................................................................................... 11-2
11.1.3.1 Software Watchdog Reset...................................................................................... 11-3
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Contents
Title
Chapter 11
Reset
MPC885 PowerQUICC Family Reference Manual, Rev. 2
Page
Number
Freescale Semiconductor