RPIXP2850BB Intel, RPIXP2850BB Datasheet - Page 3

• Manufacturer Part Number: RPIXP2850BB
• Manufacturer: Intel

Specifications of RPIXP2850BB

• Operating Supply Voltage (typ): 1.3/1.5/2.5/3.3V
• Operating Supply Voltage (max): 1.575/2.7/3.465V
• Operating Supply Voltage (min): 1.235/2.3/3.135V
• Mounting: Surface Mount
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Not Compliant

Contents
1
2
3
4
Introduction....................................................................................................................................11
1.1
1.2
1.3
1.4
Power Ratings and Requirements .................................................................................................17
2.1
2.2
2.3
2.4
2.5
RDRAM .........................................................................................................................................33
3.1
3.2
3.3
3.4
3.5
3.6
3.7
QDR SRAM ...................................................................................................................................53
4.1
4.2
4.3
System Overview................................................................................................................11
In This Guide ......................................................................................................................13
1.2.1
1.2.2
Related Documentation ......................................................................................................16
Contacting Intel® ................................................................................................................16
Power Ratings ....................................................................................................................17
Supply Voltage Power-up Sequence ..................................................................................24
2.2.1
2.2.2
2.2.3
LC Filter Network ................................................................................................................26
IXDP2800 Advanced Development Platform Power Supply Subsystem ............................27
2.4.1
2.4.2
IXP28XX Network Processor Power-On di/dt Profiles ........................................................30
2.5.1
2.5.2
IXMB2800 RDRAM Subsystem Design ..............................................................................33
3.1.1
Rambus* Channel Design ..................................................................................................35
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.2.6
IXP28XX Network Processor Rambus* Controller Footprint and Via Placement ...............38
IXP28XX Network Processor Controller Escape Routing ...................................................41
IXP28XX Network Processor Three-Channel Controller to HCD NexMod* RDRAM
Routing ...............................................................................................................................46
IXP28XX Network Processor Short Channel Routing ........................................................49
Package Trace Lengths for RDRAM Signals......................................................................50
Introduction .........................................................................................................................53
QDR Clocking Scheme.......................................................................................................54
4.2.1
QDR SRAM Connections ...................................................................................................57
Typographical Conventions ...................................................................................14
Acronyms and Terminology ...................................................................................14
Sequence for 1.4 / 1.0 GHz Devices .....................................................................24
Sequence for 650 MHz Devices ............................................................................24
Power Supply Regulation ......................................................................................25
2.2.3.1
2.2.3.2
Subsystem Block Diagram.....................................................................................27
Power-up Sequence ..............................................................................................29
di/dt Droop Analysis Results ..................................................................................31
Recommendations From Droop Analysis ..............................................................31
RDRAM Subsystem Implementation Options ........................................................34
RSL Trace Requirements and Recommendations ................................................35
Unused Channel Guidelines ..................................................................................36
Crosstalk ................................................................................................................36
Third-party Sources ...............................................................................................36
IXP28XX Network Processor Power-Up Sequence...............................................36
IXP28XX Network Processor Power-Up Considerations when using NexMod*
Memory Modules ...................................................................................................37
SRAM Controller Configurations............................................................................54
Power-Up Power Supply Regulation......................................................25
Power Supply Decoupling......................................................................25
IXP28XX Network Processor
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