DDR2 sodimm + Flash + Triple-Speed Ethernet + IO in nios

DDR2用作代码和数据区。TSE采用10/100/1000BASE SGMII模式。web server 模板运行顺利。

两个输入时钟，其中一个通过PLL生成系统时钟100MHz，以及IO时钟10MHz；另一个直接给DDR2做参考时钟输入，DDR2 memory clock frequency为300MHz。

DDR2的参考时钟需要直接从专用时钟引脚送入，不用指定为全局时钟，其内部PLL（实例 pll0）满足约束：

set_instance_assignment -name GLOBAL_SIGNAL "GLOBAL CLOCK" -to "nios_core:core_inst|nios_core_ddr2:ddr2|nios_core_ddr2_pll0:pll0|altpll:upll_memphy|altpll_esc3:auto_generated|clk[1]"
set_instance_assignment -name GLOBAL_SIGNAL "GLOBAL CLOCK" -to "nios_core:core_inst|nios_core_ddr2:ddr2|nios_core_ddr2_pll0:pll0|altpll:upll_memphy|altpll_esc3:auto_generated|clk[2]"
set_instance_assignment -name GLOBAL_SIGNAL "DUAL-REGIONAL CLOCK" -to "nios_core:core_inst|nios_core_ddr2:ddr2|nios_core_ddr2_pll0:pll0|altpll:upll_memphy|altpll_esc3:auto_generated|clk[3]"
set_instance_assignment -name GLOBAL_SIGNAL "DUAL-REGIONAL CLOCK" -to "nios_core:core_inst|nios_core_ddr2:ddr2|nios_core_ddr2_pll0:pll0|altpll:upll_memphy|altpll_esc3:auto_generated|clk[5]"
set_instance_assignment -name GLOBAL_SIGNAL "DUAL-REGIONAL CLOCK" -to "nios_core:core_inst|nios_core_ddr2:ddr2|nios_core_ddr2_pll0:pll0|altpll:upll_memphy|altpll_esc3:auto_generated|clk[6]"

DDR IO约束：

set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_dq set_instance_assignment -name INPUT_TERMINATION "PARALLEL 50 OHM WITH CALIBRATION" -to DDR2_dq set_instance_assignment -name OUTPUT_TERMINATION "SERIES 50 OHM WITH CALIBRATION" -to DDR2_dq set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_dqs set_instance_assignment -name INPUT_TERMINATION "PARALLEL 50 OHM WITH CALIBRATION" -to DDR2_dqs set_instance_assignment -name OUTPUT_TERMINATION "SERIES 50 OHM WITH CALIBRATION" -to DDR2_dqs set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_dqsn set_instance_assignment -name INPUT_TERMINATION "PARALLEL 50 OHM WITH CALIBRATION" -to DDR2_dqsn set_instance_assignment -name OUTPUT_TERMINATION "SERIES 50 OHM WITH CALIBRATION" -to DDR2_dqsn set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_ck set_instance_assignment -name OUTPUT_TERMINATION "SERIES 50 OHM WITHOUT CALIBRATION" -to DDR2_ck set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_ckn set_instance_assignment -name OUTPUT_TERMINATION "SERIES 50 OHM WITHOUT CALIBRATION" -to DDR2_ckn set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_addr set_instance_assignment -name CURRENT_STRENGTH_NEW "MAXIMUM CURRENT" -to DDR2_addr set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_ba set_instance_assignment -name CURRENT_STRENGTH_NEW "MAXIMUM CURRENT" -to DDR2_ba set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_csn set_instance_assignment -name CURRENT_STRENGTH_NEW "MAXIMUM CURRENT" -to DDR2_csn set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_wen set_instance_assignment -name CURRENT_STRENGTH_NEW "MAXIMUM CURRENT" -to DDR2_wen set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_casn set_instance_assignment -name CURRENT_STRENGTH_NEW "MAXIMUM CURRENT" -to DDR2_casn set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_rasn set_instance_assignment -name CURRENT_STRENGTH_NEW "MAXIMUM CURRENT" -to DDR2_rasn set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_odt set_instance_assignment -name CURRENT_STRENGTH_NEW "MAXIMUM CURRENT" -to DDR2_odt set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_cke set_instance_assignment -name CURRENT_STRENGTH_NEW "MAXIMUM CURRENT" -to DDR2_cke set_instance_assignment -name IO_STANDARD "SSTL-18 CLASS I" -to DDR2_dm set_instance_assignment -name OUTPUT_TERMINATION "SERIES 50 OHM WITH CALIBRATION" -to DDR2_dm set_instance_assignment -name MEM_INTERFACE_DELAY_CHAIN_CONFIG FLEXIBLE_TIMING -to DDR2_dq set_instance_assignment -name MEM_INTERFACE_DELAY_CHAIN_CONFIG FLEXIBLE_TIMING -to DDR2_dm set_instance_assignment -name MEM_INTERFACE_DELAY_CHAIN_CONFIG FLEXIBLE_TIMING -to DDR2_dqs set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[0] -to DDR2_dq[0] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[0] -to DDR2_dq[1] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[0] -to DDR2_dq[2] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[0] -to DDR2_dq[3] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[0] -to DDR2_dq[4] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[0] -to DDR2_dq[5] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[0] -to DDR2_dq[6] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[0] -to DDR2_dq[7] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[1] -to DDR2_dq[8] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[1] -to DDR2_dq[9] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[1] -to DDR2_dq[10] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[1] -to DDR2_dq[11] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[1] -to DDR2_dq[12] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[1] -to DDR2_dq[13] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[1] -to DDR2_dq[14] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[1] -to DDR2_dq[15] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[2] -to DDR2_dq[16] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[2] -to DDR2_dq[17] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[2] -to DDR2_dq[18] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[2] -to DDR2_dq[19] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[2] -to DDR2_dq[20] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[2] -to DDR2_dq[21] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[2] -to DDR2_dq[22] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[2] -to DDR2_dq[23] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[3] -to DDR2_dq[24] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[3] -to DDR2_dq[25] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[3] -to DDR2_dq[26] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[3] -to DDR2_dq[27] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[3] -to DDR2_dq[28] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[3] -to DDR2_dq[29] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[3] -to DDR2_dq[30] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[3] -to DDR2_dq[31] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[4] -to DDR2_dq[32] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[4] -to DDR2_dq[33] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[4] -to DDR2_dq[34] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[4] -to DDR2_dq[35] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[4] -to DDR2_dq[36] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[4] -to DDR2_dq[37] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[4] -to DDR2_dq[38] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[4] -to DDR2_dq[39] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[5] -to DDR2_dq[40] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[5] -to DDR2_dq[41] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[5] -to DDR2_dq[42] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[5] -to DDR2_dq[43] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[5] -to DDR2_dq[44] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[5] -to DDR2_dq[45] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[5] -to DDR2_dq[46] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[5] -to DDR2_dq[47] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[6] -to DDR2_dq[48] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[6] -to DDR2_dq[49] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[6] -to DDR2_dq[50] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[6] -to DDR2_dq[51] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[6] -to DDR2_dq[52] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[6] -to DDR2_dq[53] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[6] -to DDR2_dq[54] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[6] -to DDR2_dq[55] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[7] -to DDR2_dq[56] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[7] -to DDR2_dq[57] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[7] -to DDR2_dq[58] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[7] -to DDR2_dq[59] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[7] -to DDR2_dq[60] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[7] -to DDR2_dq[61] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[7] -to DDR2_dq[62] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[7] -to DDR2_dq[63] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[0] -to DDR2_dm[0] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[1] -to DDR2_dm[1] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[2] -to DDR2_dm[2] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[3] -to DDR2_dm[3] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[4] -to DDR2_dm[4] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[5] -to DDR2_dm[5] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[6] -to DDR2_dm[6] set_instance_assignment -name DQ_GROUP 9 -from DDR2_dqs[7] -to DDR2_dm[7]