Mpc8540 Reset Configuration; Table 7-1 Mpc8540 Power-On Reset Configuration Settings - SMART Embedded Computing MVME3100 Installation And Use Manual

MPC8540 Reset Configuration

7.2 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 deasserted 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
details and/or programming information.
Table 7-1
MPC8540
Signal
PCI_REQ64_L
PCI_GNT1_L
PCI_GNT2_L
PCI_GNT3_L
PCI_GNT4_L
EC_MDC
122
MPC8540 Power-on Reset Configuration Settings
Select Default
Option Setting
PLD logic 0
Resistor 0
Resistor 1
Resistor 1
Switch 0
Resistor 1
MVME3100 Single Board Computer Installation and Use (6806800M28H)
Appendix B, Related Documentation, for additional
Description
PCI-32
Configuration
PCI Interface I/O
Impedance
PCI Arbiter
Configuration
PCI Debug
Configuration
PCI/PCI-X
Configuration
TSEC Width
Configuration
Programming Details
State of Bit vs Function
PCI/PCI-X interface is
0
64-bit
PCI/PCI-X interface is
1
32-bit
0 25 ohm drivers
1 42 ohm drivers
Disabled on-chip
0
PCI/PCI-X arbiter
Enabled on-chip
1
PCI/PCI-X arbiter
0 PCI debug enabled
PCI operates in
1
normal mode
0 PCI-X mode
1 PCI mode
Ethernet in reduced
0
mode (RTBI or RGMII)
Ethernet in standard
1
mode (TBI or GMII)
1
2