IBM PowerPC 405GP User Manual page 10

Storage User-defined 0 Register (SUOR) ............................................................................................. 6-19
Storage Little-Endian Register (SLER) ................................................................................................. 6-19
Part III. PPC405GP System Operations ............................................................................... 111-1
Chapter 7. Clocking ............................................................................................................... 7-1
PLL Overview ................................................................................................................................................... 7-1
Input Reference Clock (SysClk) ....................................................................................................................... 7-2
External Clock Strapping Setup ....................................................................................................................... 7-3
Sample Clock Ratios ........................................................................................................................................ 7-4
PCI Clocking .................................................................................................................................................... 7-7
PCI Clocks ................................................................................................................................................... 7-8
PCI Adapter Applications ............................................................................................................................ 7-8
Serial Port Clocking ......................................................................................................................................... 7-9
Clocking Registers ........................................................................................................................................... 7-9
PLL Mode Register (CPCO_PLLMR) ......................................................................................................... 7-10
Chip Control Register 0 (CPCO_CRO) ....................................................................................................... 7-11
Chapter 8. Reset and Initialization ........................................................................................ 8-1
Reset Signals ................................................................................................................................................... 8-1
Reset Types .............................................................................................................................. ....................... 8-1
Core Reset .................................................................................................................................................. 8-1
Chip Reset ................................................................................................................................................... 8-1
System Reset .............................................................................................................................................. 8-2
PCI Power Management Initiated Resets ........................................................................................................ 8-2
Processor Initiated Resets ............................................................................................................................... 8-2
Processor State After Reset ............................................................................................................................ 8-2
Processor Register Contents After Reset ........................................................................................................ 8-3
Machine State Register Contents after Reset ............................................................................................. 8-3
Contents of Special Purpose Registers after Reset .................................................................................... 8-4
OCR Contents after Reset ............................................................................................................................... 8-4
MMIO Register Contents After Reset .............................................................................................................. 8-8
PPC405GP Chip Initialization ........................................................................................................................ 8-12
OCM Initialization ...................................................................................................................................... 8-13
Initializing Instruction-Side OCM ........................................................................................................... 8-13
Initializing Data-Side OCM .................................................................................................................... 8-13
UIC Initialization ........................................................................................................................................ 8-14
UART Initialization ..................................................................................................................................... 8-14
PPC405GP Initial Processor Sequencing ............................................. : ........................................................ 8-14
Initialization Requirements ............................................................................................................................. 8-15
Initialization Code Example ............................................................................................................................ 8-16
Chapter 9. Pin Strapping and Sharing ................................................................................. 9-1
Pin Strapping ................................................................................................................................................... 9-1
Chip Pin Strapping Register (CPCO_PSR) .................................................................................................. 9-1
Pin Sharing ...................................................................................................................................................... 9-3
Chapter 10. Interrupt Controller Operations ...................................................................... 10-1
UIC Overview ................................................................................................................................................. 10-1
UIC Features .................................................................................................................................................. 10-1
UIC Interrupt Assignments .................................................................................................................... : ........ 10-1
Interrupt Programmability ............................................................................................................................... 10-3
UIC Registers ................................................................................................................................................. 10-3
UIC Status Register (UICO_SR) ................................................................................................................ 10-3
UIC Enable Register (UICO_ER) ............................................................................................................... 10-6
UIC Critical Register (UICO_CR) ............................................................................................................... 10-8
UIC Polarity Register (UICO_PR) ............................................................................................................ 10-10
UIC Trigger Register (UICO_TR) ............................................................................................................. 10-13
Preliminary Contents
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