Mpc8540 Reset Configuration; Table 7-1 Mpc8540 Power-On Reset Configuration Settings - Emerson MVME3100 Series Installation And Use Manual

Programming Details
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 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 7-1 MPC8540 Power-on Reset Configuration Settings

MPC8540 Signal Select Option
PCI_REQ64_L PLD logic
PCI_GNT1_L Resistor
PCI_GNT2_L Resistor
PCI_GNT3_L Resistor
PCI_GNT4_L Switch
EC_MDC Resistor
124
Appendix B, Related Documentation, for additional details and/or
Default
Setting Description
0 PCI-32 Configuration
0 PCI Interface I/O
Impedance
1 PCI Arbiter
Configuration
1 PCI Debug
Configuration
0 PCI/PCI-X
Configuration
1 TSEC Width
Configuration
MVME3100 Single Board Computer Installation and Use (6806800M28C)
1
State of Bit vs Function
0 PCI/PCI-X interface is 64-
bit
1 PCI/PCI-X interface is 32-
bit
0 25 ohm drivers
1 42 ohm drivers
0 Disabled on-chip PCI/PCI-
2
X arbiter
1 Enabled on-chip PCI/PCI-
X arbiter
0 PCI debug enabled
1 PCI operates in normal
mode
0 PCI-X mode
1 PCI mode
0 Ethernet in reduced
mode (RTBI or RGMII)
1 Ethernet in standard
mode (TBI or GMII)