Technical data

Chapter 4
MVME4100 Single Board Computer Programmer’s Reference (6806800H19B)
53
Programming Details
4.1 Overview
This chapter includes additional programming information for the MVME4100. Items
discussed include:
z MPC8548E Reset Configuration on page 53
z MPC8548E Interrupt Controller on page 60
z Local Bus Controller Chip Select Assignments on page 61
z I2C Device Addresses on page 62
z User Configuration EEPROM on page 62
z VPD EEPROM on page 63
z RTM VPD EEPROM on page 63
z Ethernet PHY Address on page 63
z Flash Memory on page 64
z PCI/PCI-X Configuration on page 64
z PCI IDSEL and Interrupt Definition on page 65
z PCI Arbitration Assignments on page 66
z LBC Timing Parameters on page 68
z Other Software Considerations on page 66
z Clock Distribution on page 69
4.2 MPC8548E Reset Configuration
The MVME4100 supports the power-on reset (POR) pin sampling method for processor reset
configuration. The states of the various configuration pins on the processor are sampled when
reset is deasserted to determine the desired operating modes. Combinations of pull-up and
pull-down resistors are used to set the options. Some options are fixed and some are selectable
at build time by installing appropriate pull up/pull down resistor combinations for the board's