Features ............................................................................................................................................................. 1-1
Modes of Operation................................................................................................................................... 2-5
General Purpose PLL (GPLL) ................................................................................................................... 2-6
Standard PLL (SPLL) ................................................................................................................................ 2-7
Clock Distribution Network ............................................................................................................................... 2-11
Bus Size Matching .................................................................................................................................. 2-19
RAM Initialization and ROM Operation ................................................................................................... 2-19
or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without notice.
PIO ................................................................................................................................................................... 2-30
Control Logic Block ................................................................................................................................. 2-34
Left and Right Edges............................................................................................................................... 2-34
Top Edge................................................................................................................................................. 2-35
Polarity Control Logic .............................................................................................................................. 2-38
Hot Socketing.......................................................................................................................................... 2-44
SERDES and PCS (Physical Coding Sublayer)............................................................................................... 2-45
Density Shifting ................................................................................................................................................ 2-49
DC and Switching Characteristics
Absolute Maximum Ratings ............................................................................................................................... 3-1
Hot Socketing Specifications.............................................................................................................................. 3-2
DC Electrical Characteristics.............................................................................................................................. 3-3
LatticeECP2 Supply Current (Standby).............................................................................................................. 3-4
LatticeECP2M Supply Current (Standby)........................................................................................................... 3-4
LatticeECP2 Initialization Supply Current .......................................................................................................... 3-5
LatticeECP2M Initialization Supply Current ....................................................................................................... 3-6
SERDES Power Supply Requirements (LatticeECP2M Family Only) ............................................................... 3-7
SERDES Power (LatticeECP2M Family Only)................................................................................................... 3-7
LatticeECP2/M sysCONFIG Port Timing Specifications .................................................................................. 3-37
JTAG Port Timing Specifications ..................................................................................................................... 3-42
Switching Test Conditions................................................................................................................................ 3-43
Pinout Information
Signal Descriptions ............................................................................................................................................ 4-1
PICs and DDR Data (DQ) Pins Associated with the DDR Strobe (DQS) Pin .................................................... 4-4
LatticeECP2 Pin Information Summary, LFE2-6 and LFE2-12 .......................................................................... 4-5
LatticeECP2 Pin Information Summary, LFE2-20 and LFE2-35 ........................................................................ 4-7
LatticeECP2 Pin Information Summary, LFE2-50 and LFE2-70 ........................................................................ 4-9
LatticeECP2M Pin Information Summary......................................................................................................... 4-11
Available Device Resources by Package, LatticeECP2................................................................................... 4-13
LatticeECP2 Power Supply and NC................................................................................................................. 4-14
LatticeECP2 Power Supply and NC (Cont.)..................................................................................................... 4-15
LFE2-6E and LFE2-12E Logic Signal Connections: 144 TQFP....................................................................... 4-17
LFE2-12E and LFE2-20E Logic Signal Connections: 208 PQFP .................................................................... 4-21
LFE2-6E and LFE2-12E Logic Signal Connections: 256 fpBGA...................................................................... 4-26
LFE2-20 Logic Signal Connections: 256 fpBGA .............................................................................................. 4-34
LFE2-12E and LFE2-20E Logic Signal Connections: 484 fpBGA.................................................................... 4-49
LFE2-35E and LFE2-50E Logic Signal Connections: 484 fpBGA.................................................................... 4-61
LFE2-20 and LFE2-35 Logic Signal Connections: 672 fpBGA ........................................................................ 4-73
LFE2-50E and LFE2-70E Logic Signal Connections: 672 fpBGA.................................................................... 4-92
LFE2-70E Logic Signal Connections: 900 fpBGA.......................................................................................... 4-111
LFE2M35E Logic Signal Connections: 256 fpBGA ........................................................................................ 4-134
LFE2M35E Logic Signal Connections: 484fpBGA ......................................................................................... 4-142
LFE2M35E Logic Signal Connections: 672 fpBGA ........................................................................................ 4-155
Ordering Information
LatticeECP2 Part Number Description............................................................................................................... 5-1
Ordering Information .......................................................................................................................................... 5-1
LatticeECP2M Part Number Description............................................................................................................ 5-8
Ordering Information .......................................................................................................................................... 5-8
For Further Information ...................................................................................................................................... 6-1
Revision History
Section II. LatticeECP2/M Family Technical Notes
LatticeECP2M SERDES/PCS Usage Guide
Features ............................................................................................................................................................. 8-1
Introduction to PCS ............................................................................................................................................ 8-1
Interrupts and Status............................................................................................................................... 8-63
Dynamic Configuration of SERDES/PCS Quad...................................................................................... 8-64
Per Quad Register Overview .................................................................................................................. 8-66
Per Quad PCS Control Register Details ................................................................................................. 8-67
Per Quad SERDES Control Register Details .......................................................................................... 8-70
Per Quad Reset and Clock Control Register Details .............................................................................. 8-72
Per Quad PCS Status Register Details................................................................................................... 8-73
Per Quad SERDES Status Register Details ........................................................................................... 8-75
Per Channel Register Overview.............................................................................................................. 8-76
Per Channel SERDES Control Register Details ..................................................................................... 8-79
Per Channel PCS Status Register Details .............................................................................................. 8-81
Per Channel SERDES Status Register Details....................................................................................... 8-82
Technical Support Assistance.......................................................................................................................... 8-84
Revision History ............................................................................................................................................... 8-84
Appendix A. 8b/10b Symbol Codes ................................................................................................................. 8-85
Appendix B. Attribute Cross-Reference Table ................................................................................................. 8-86
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1. Project Overview
1.1 Introduction
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