Xilinx MIcroblaze Development Spartan-3E 1600E - Manual (Page 160)

158 MicroBlaze Development Kit Spartan-3E 1600 Edition User Guide
www.xilinx.com UG257 (v1.1) December 5, 2007
Appendix A: Schematics R
DDR SDRAM Series Termination and FX2 Connector Differential
Termination
Resistors R160 through R201 represent the series termination resistors for the DDR
SDRAM. See Chapter 13, “DDR SDRAM,” for additional information.
Resistors R202 through R210 are not loaded on the board. These landing pads provide
optional connections for 100: differential termination resistors. See “Using Differential
Inputs,” page 120 for additional information.