Intel 21555 User Manual

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21555 PCI-to-PCI Bridge Evaluation Board User’s Guide  
Introduction
1.6
Resistor Jumpers
 shows the location of the zero (0) ohm resistor configuration jumpers. They control the 
clock configuration and the clamping voltage. To alter the factory configuration of the 
DE1B55503, the jumpers must be soldered on or off the DE1B55503 board. See 
.
Figure 3.  Jumper Resistors 
A8410-01
J1
E4
J9
J20
J21
R72
OPTIONAL SLOT
SLOT 1
Y1
E2
E3
J4
J6
J2
J5
E1
21555
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
J102
J101
J7
SLOT 2
R69
R93
R100
R73
R66
R68
R65
R97
R95
R91
R115
R116
R92
J8
E9
E8
E7
E5
L2
L1+