Programming Details; Introduction; Mpc8540 Reset Configuration; Table 2-1 Mpc8540 Power-On Reset Configuration Settings - Emerson MVME3100 Series Programmer's Reference Manual

Programming Details

2.1

Introduction

This chapter includes additional programming information for the MVME3100 single-board
computer. Items discussed include:
MPC8540 Reset Configuration on page 33
MPC8540 Interrupt Controller on page 37
Local Bus Controller Chip Select Assignments on page 38
Two-Wire Serial Interface on page 38
User Configuration EEPROM on page 39
VPD EEPROM on page 39
RTM VPD EEPROM on page 39
Ethernet PHY Address on page 40
Flash Memory on page 40
PCI IDSEL Definition on page 41
PCI Arbitration Assignments on page 42
Clock Distribution on page 43
MPC8540 Real-Time Clock Input on page 44
MPC8540 LBC Clock Divisor on page 44
2.2

MPC8540 Reset Configuration

The MVME3100 supports the power-on reset (POR) pin sampling method for MPC8540 reset
configuration. The states of the various configuration pins on the MPC8540 are sampled when
reset is de-asserted to determine the desired operating modes. The following table describes
the configuration options and the corresponding default setting. Refer to the MPC8540
Reference Manual listed in
programming information.

Table 2-1 MPC8540 Power-on Reset Configuration Settings

MPC8540 Signal Select Option
PCI_REQ64_L PLD logic
MVME3100 Single Board Computer Programmer's Reference (6806800G37A)
Appendix A, Related Documentation, for additional details and/or
Default
Setting Description
0 PCI-32 Configuration
2
1
State of Bit vs Function
0 PCI/PCI-X interface is
64-bit
1 PCI/PCI-X interface is
32-bit
33