EWIXP425BCT Intel, EWIXP425BCT Datasheet - Page 73

• Manufacturer Part Number: EWIXP425BCT
• Manufacturer: Intel

Specifications of EWIXP425BCT

• Core Operating Frequency: 400MHz
• Package Type: BGA
• Pin Count: 492
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Compliant

Critical Routing Topologies—Intel
7.0
7.1
Note:
Figure 28.
December 2007
Document Number: 252817-008US
Topology 1
Topology 2
Topology 3
and IXC1100 Control Plane
IXP42X Product Line
Processors
Intel
Critical Routing Topologies
This chapter contains information for recommended trace lengths, size, and routing
guidelines for the PC133 SDRAM and PCI bus.
PC133 SDRAM Topologies
The Intel
Processor SDRAM Memory Bus is designed to four loads and allows two banks of
PC 133 of SDRAM memory.
SDRAM interfaced to the processors memory bus.
The figures in this section do not include any termination resistors that may be needed.
For best signal integrity results, the designer may perform simulations.
SDRAM Topology
®
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane
®
IXP42X product line and IXC1100 control plane processors
Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
A
C
D
Figure 28
illustrates the topologies of two banks of PC 133
SDRAM
Bank 0
M
M
S
D
R
A
S
D
R
A
B
Hardware Design Guidelines
SDRAM
Bank 1
M
M
S
D
R
A
S
D
R
A
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