Spartan-3A/3AN Starter Kit Board User Guide www.xilinx.com 109UG334 (v1.0) May 28, 2007RChapter 13DDR2 SDRAMThe Spartan-3A/3AN Starter Kit board includes a 512 Mbit (32M x 16) Micron TechnologyDDR2 SDRAM (MT47H32M16) with a 16-bit data interface, as shown in Figure 13-1.Figure 13-1: FPGA Interface to Micron 512 Mbit DDR2 SDRAMUG334_c13_01_052407See Table SD_A<15:0>(M3)FPGASD_DQ<15:0>SD_BA<2:0>SD_RASA[12:0]BA[1:0]DQ[15:0]RAS#Micron 512MbDDR2 SDRAMSD_CASSD_WESD_CK_PSD_CK_NSD_CKESD_CSSD_LDMSD_UDMSD_UDQS_PSD_LDQS_NCAS#WE#UDMUDQS#LDMLDQS#CS#CKCK#CKESee TableSee Table(M4)(N4)(E3)(K6)(J3)(K2)(M5)(N3)(M2)(M1)(H4)(J1)VCCO_3REG2VREFVDDVDDQ1.8V0.9VM T47H32M16(32Mx16)SSTL_18 TerminationSD_UDQS_NUDQS(J5)(N1)(T1)(R6)(H7)(L8)(T6)VREF_3SW2SW15.0V0.9VLDO2 1.8VSD_LDQS_P LDQS(K3)SD_ODT ODT(P1)SD_LOOP(SSTL_18 Reference Voltage)(H3)(J8)NationalSemiconductorLP3906Regulator(SSTL_18 Termination Voltage)(DDR2 SDRAM Supply Voltage)
