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Programming Details
Bill of Materials. Each option and the corresponding default setting are described in the
following table. Refer to the MPC8548E reference manual, listed in Appendix B, Related
Documentation, Manufacturers’ Documents on page 85 for additional details and/or
programming information.
Table 4-1 MPC8548E POR Configuration Settings
MPC8548E
Signal
Select
Option
Default
POR
Setting
PCI1_REQ64_L
Fixed
0
PCI2_GNT3_L
PCI1_GNT1_L
PCI1_GNT2_L
PCI1_GNT3_L
PCI1_GNT4_L
EC_MDC
54
Resistor
Resistor
Fixed
Fixed
PLD
0
0
1
1
0
Fixed
0
Description
State of Bit vs. Function
PCI1-32
Configuration
0
PCI1/PCI-X interface is 64-bit
1
PCI1/PCI-X interface is 32-bit
PCI1_CLK
0
PCI1_CLK is used as the PCI1
clock
1
SYSCLK is used as the PCI
clock
PCI1 interface
I/O impedance
0
25 Ohm drivers
1
42 Ohm drivers
PCI arbiter
configuration
0
Disable on-chip PCI/PCI-X
arbiter
1
Enable on-chip PCI/PCI-X
arbiter
PCI debug
configuration
0
PCI debug enabled
1
PCI operates in normal mode
PCI/PCI-X
configuration
0
PCI-X mode
1
PCI mode
TSEC 1 and 2
width
configuration
0
TSEC 1 and 2 in reduced mode
(RTBI or RGMII)
1
TSEC 1 and 2 in standard
mode (TBI or GMII)
MVME4100 Single Board Computer Programmer’s Reference (6806800H19B)