Intel
®
Pentium
®
III Processor with 512KB L2 Cache Dual Processor Platform Design Guide
3-3
Table 3-5
contains the length specifications for the segments of the T-topology. Please note that lengths
L0 and L1 must be length matched to within 0.25 inches.
Table 3-6
contains the component values which
should be used for this topology.
Figure 3-1. System Bus T-Topology
Table 3-5. Trace Lengths for T Topology (ServerWorks Chipset)
Segment
Min Length (inches)
Max Length (inches)
L0
3.25
3.75
L1
3.25
3.75
L2
1.75
2.5
Table 3-6. Component Values for T Topology
Reference
Value
Tolerance
R1 (on chip)
68
Ω
10%
R2 (on chip)
68
Ω
10%
R3
68
Ω
1%
R4
68
Ω
1%
Chipset
CPU0
CPU1 or
Terminator
L0
L1
L2
RTTCTRL
V
TT
R1
R2
V
TT
R3
RTTCTRL
R4
