PRIXP425BB Intel, PRIXP425BB Datasheet - Page 21

• Manufacturer Part Number: PRIXP425BB
• Description: IC NETWRK PROCESSR 266MHZ 492BGA
• Manufacturer: Intel

Specifications of PRIXP425BB

• Processor Type: Network
• Features: XScale Core
• Speed: 266MHz
• Voltage: 1.3V
• Mounting Type: Surface Mount
• Package / Case: 492-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 869046

General Hardware Design Considerations—Intel
plane processors
Table 3.
Note:
December 2007
Document Number: 252817-008US
SDRAM Memory Types
Figure
processors’ memory bus. The figures do not include any termination resistors that may
be needed. For best signal integrity results the designer may perform simulations.
The SDM_CLKOUT is the reference clock signal for all SDRAM devices and generated by
the onchip PLL. Layout guidelines can be found in
on page
Note:
Technology
128 Mbit
256 Mbit
512 Mbit
SDRAM
3,
The 4 M x 32, * 8 M x 32 and * 16 M x 32 devices have not been fully validated by Intel.
74.
Figure
4, and
Intel
Arrangement
* 16M x 32
* 16M x 32
* 4M x 32
* 4M x 32
* 8M x 32
* 8M x 32
16M x 16
16M x 16
32M x 16
32M x 16
SDRAM
8M x 16
8M x 16
®
Figure 5
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
®
IXP42X product line and IXC1100 control
illustrate how the PC133 SDRAM interfaces to the
Number of Chips
2
4
1
2
2
4
1
2
2
4
1
2
Section 7.1.1, “PC 133 SDRAM Clock”
Number of Banks
(Systems)
1
2
1
2
1
2
1
2
1
2
1
2
Hardware Design Guidelines
Total Memory Size
128 Mbytes
128 Mbytes
256 Mbytes
128 Mbytes
32 Mbytes
64 Mbytes
16 Mbytes
32 Mbytes
64 Mbytes
32 Mbytes
64 Mbytes
64 Mbytes
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