Slot Assignments - Advantech MIC-3401 User Manual

2.2 Slot Assignments

The CompactPCI specification defines slot numbering seperating for
physical and logical slots. Each slot has a physical number and a
logical number (refer to the CompactPCI specification version 2.0
R2.1 for further information on slot assignments). The physical
numbers are printed on the backplane, enclosed in circles or triangles,
below each slot. Slot 8, marked by a triangle, is the system slot and
can only be used by a processor module. The other slots (slot 1~7) are
peripheral slots and can be used by peripheral modules.
The logical number of each slot is defined according to the IDSEL
signal and the associated address used to select the slot. Table 2-2
shows the system slot to peripheral slot relationships on the
MIC-3401/MIC-3401H. Physical slot 8 (system slot) has a logical
number 1, physical slot 7 has a logical number 2, physical slot 6 has a
logical number 3, ..., and physical slot 1 has a logical number 8. The
connectors in logical slot 1 are designated as 1-P1 and 1-P2. Nomen-
clature for connectors in other slots is similar, such as 2-P1,
2-P2, 3-P1, 3-P2, etc.
Connector 1-P1 is a keyed connector providing 32-bit CompactPCI
busing between the system slot and the peripheral slots (2-P1~8-P1).
Connector 1-P2 is an un-keyed connector providing 64-bit Compact-
PCI busing between the system slot and the peripheral slots (2-P2~
8-P2).
Chapter 2 Hardware Configuration 9