User`s guide

i.MX53 System Development User’s Guide, Rev. 1
Freescale Semiconductor iii
Contents
Paragraph
Number Title
Page
Number
Contents
About This Guide
Audience ......................................................................................................................... xvii
Organization................................................................................................................... xviii
Essential Reference.......................................................................................................... xix
Suggested Reading........................................................................................................... xix
General Information..................................................................................................... xix
Related Documentation................................................................................................ xix
Conventions .....................................................................................................................xix
Signal Conventions............................................................................................................xx
Acronyms and Abbreviations ............................................................................................xx
Chapter 1
Design Checklist
1.1 Boot Configuration Bus Isolation Resistors .................................................................... 1-8
1.2 DDR Reference Circuit.................................................................................................... 1-8
1.3 Avoiding I
2
C Conflicts .................................................................................................... 1-9
1.4 JTAG Signal Termination .............................................................................................. 1-10
Chapter 2
i.MX53 Layout Recommendations
2.1 Basic Design Recommendations ..................................................................................... 2-1
2.1.1 Fanout .......................................................................................................................... 2-3
2.2 Stackup............................................................................................................................. 2-4
2.3 DDR Connection Information ......................................................................................... 2-5
2.4 DDR2 and DDR3 Routing Rules..................................................................................... 2-6
2.5 Routing Topologies.......................................................................................................... 2-7
2.5.1 1 Gbyte Topologies...................................................................................................... 2-8
2.5.2 2 Gbyte Topologies...................................................................................................... 2-9
2.5.3 DDR2 Routing Examples .......................................................................................... 2-12
2.5.4 2-Gbyte Routing Examples........................................................................................ 2-19
2.6 Power Recommendations .............................................................................................. 2-26
2.7 TV Encoder Recommendations..................................................................................... 2-27
2.8 SATA Recommendations............................................................................................... 2-27
2.9 LVDS Recommendations............................................................................................... 2-27
2.10 Reference Resistors........................................................................................................ 2-28
2.11 ESD and Radiated Emissions Recommendations.......................................................... 2-29