Evaluation Board Manual
PPC750FX Evaluation Board
Preliminary
Bills of Materials
Page 102 of 115
750FXebm_ch12.fm
June 10, 2003
The information provided in each column of the component placement table is described in
All of the coordinates are referenced to the 0,0 datum point which is at the center of the mounting hole in the
bottom left corner of the board as viewed from the top side. The coordinate values in the table and the labels
on the board are given in thousandths of inches. For example, an X-coordinate value of 7995 indicates that
the component has an X-coordinate that is 7.995 inches from the 0,0 datum. Note that it is possible for
components to have negative coordinate values.
Figure 12-1. Example of a Component Placement List in the Schematics
Table 12-2. Component Placement Data Description
Column Heading
1
Description
REF
Reference designator as it appears in the BOM and the schematics
X
X-coordinate of the component location
Y
Y-coordinate of the component location
R
Rotation of the component in degrees
M
Shows which side of the board the component is on:
N = top side
Y = bottom side
Note 1: The column headings shown are representative only. The actual column headings will vary from schematic to schematic.
However, the information provided is the same in all cases.
REF
X
Y
R
M
BT1
7830
4260
180
N
BT2
7995
1355
270
N
C1
1135
11130
90
N
C2
6330
11120
90
N
8
F
