sdram_controller_1.sch

这是我从网上找到的用vhdl语言写的sdram控制器的代码。我的邮箱：[e-mail]

            WIRE 2240 1120 2272 1120
            WIRE 2240 1120 2240 3232
            WIRE 2240 3232 3888 3232
            WIRE 3888 3232 4288 3232
            WIRE 4256 2864 4288 2864
            WIRE 4288 2864 4288 3232
            BEGIN DISPLAY 3888 3232 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 1168 2672 1200 2672
            BEGIN DISPLAY 1168 2672 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 1168 2896 1200 2896
            BEGIN DISPLAY 1168 2896 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 1584 3232 1680 3232
            BEGIN DISPLAY 1584 3232 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 1584 3136 1680 3136
            BEGIN DISPLAY 1584 3136 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 1824 2080 1984 2080
            BEGIN DISPLAY 1984 2080 ATTR Name
                ALIGNMENT SOFT-LEFT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 1136 1888 1184 1888
            BEGIN DISPLAY 1136 1888 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        INSTANCE XLXI_5 1184 2336 R0
        BEGIN BRANCH clk0b
            WIRE 1568 2080 1584 2080
            WIRE 1584 2080 1600 2080
            BEGIN DISPLAY 1584 2080 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk0c
            WIRE 1568 1824 1584 1824
            WIRE 1584 1824 1600 1824
            BEGIN DISPLAY 1584 1824 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clkp
            WIRE 704 1824 816 1824
        END BRANCH
        INSTANCE XLXI_26 1600 1856 R0
        INSTANCE XLXI_25 1600 2112 R0
        BEGIN BRANCH reset
            WIRE 720 2208 816 2208
        END BRANCH
        BEGIN BRANCH clk_fbp
            WIRE 736 1248 816 1248
        END BRANCH
        BEGIN BRANCH clk_fb
            WIRE 1040 1248 1088 1248
            WIRE 1088 1248 1184 1248
            BEGIN DISPLAY 1088 1248 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk0a
            WIRE 1568 1440 1600 1440
            WIRE 1600 1440 1648 1440
            BEGIN DISPLAY 1600 1440 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH Clk_SDp
            WIRE 1872 1440 1920 1440
        END BRANCH
        INSTANCE XLXI_9 1184 1696 R0
        INSTANCE XLXI_24 1648 1472 R0
        BEGIN BRANCH Clk
            WIRE 1040 1824 1072 1824
            WIRE 1072 1824 1152 1824
            WIRE 1152 1824 1184 1824
            WIRE 1152 1184 1184 1184
            WIRE 1152 1184 1152 1648
            WIRE 1152 1648 1152 1824
            BEGIN DISPLAY 1152 1648 ATTR Name
                ALIGNMENT SOFT-TVCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH we_rn
            WIRE 736 2592 1408 2592
        END BRANCH
        BEGIN BRANCH we_rn_i
            WIRE 1632 2592 1648 2592
            WIRE 1648 2592 1648 3008
            WIRE 1648 3008 1680 3008
            WIRE 1648 2592 1856 2592
            WIRE 1856 2592 2656 2592
            BEGIN DISPLAY 1856 2592 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 2592 2432 2656 2432
            BEGIN DISPLAY 2592 2432 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN INSTANCE XLXI_2 2656 2896 R0
        END INSTANCE
        BEGIN INSTANCE XLXI_479 3088 3200 M0
        END INSTANCE
        BEGIN BRANCH write_st
            WIRE 3120 2352 3184 2352
            WIRE 3184 2096 3184 2352
            WIRE 3184 2096 3232 2096
            WIRE 3232 2096 3824 2096
            BEGIN DISPLAY 3232 2096 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH XLXN_2212
            WIRE 4256 2608 4272 2608
            WIRE 4272 2608 4272 2640
            WIRE 4256 2640 4272 2640
        END BRANCH
        DISPLAY 4284 2624 TEXT ?
        IOMARKER 1920 1440 Clk_SDp R0 28
        BEGIN BRANCH locked1
            WIRE 1568 1568 2544 1568
            WIRE 2544 1568 2544 1920
            WIRE 2544 1920 3232 1920
            WIRE 3232 1920 3760 1920
            WIRE 3760 1920 3760 2224
            WIRE 3760 2224 3824 2224
            BEGIN DISPLAY 3232 1920 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_j
            WIRE 1824 1824 3216 1824
            WIRE 3216 1824 3536 1824
            WIRE 3536 1824 3536 2416
            WIRE 3536 2416 3824 2416
            BEGIN DISPLAY 3216 1824 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 3760 2352 3824 2352
            BEGIN DISPLAY 3760 2352 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked2
            WIRE 1568 2208 1872 2208
            WIRE 1872 2208 2544 2208
            WIRE 2544 2000 2544 2208
            WIRE 2544 2000 3232 2000
            WIRE 3232 2000 3648 2000
            WIRE 3648 2000 3648 2288
            WIRE 3648 2288 3824 2288
            BEGIN DISPLAY 1872 2208 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
            BEGIN DISPLAY 3232 2000 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 2624 2352 2656 2352
            BEGIN DISPLAY 2624 2352 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 4256 2480 4352 2480
            BEGIN DISPLAY 4352 2480 ATTR Name
                ALIGNMENT SOFT-LEFT
            END DISPLAY
        END BRANCH
        INSTANCE XLXI_66 1680 3264 R0
        INSTANCE XLXI_145 1408 2624 R0
        BEGIN BRANCH data_addr_n
            WIRE 800 2768 816 2768
        END BRANCH
        INSTANCE XLXI_144 816 2800 R0
        INSTANCE XLXI_67 1200 3024 R0
        IOMARKER 736 2592 we_rn R180 28
        IOMARKER 720 2208 reset R180 28
        IOMARKER 704 1824 clkp R180 28
        INSTANCE XLXI_143 816 2240 R0
        INSTANCE XLXI_20 816 1856 R0
        BEGIN BRANCH reset_i
            WIRE 1040 2208 1056 2208
            WIRE 1056 2208 1184 2208
            WIRE 1056 1568 1056 2096
            WIRE 1056 2096 1056 2208
            WIRE 1056 1568 1184 1568
            BEGIN DISPLAY 1056 2096 ATTR Name
                ALIGNMENT SOFT-TVCENTER
            END DISPLAY
        END BRANCH
        IOMARKER 736 1248 clk_fbp R180 28
        INSTANCE XLXI_21 816 1280 R0
        LINE N 1552 1164 1588 1200 
        LINE N 1592 1160 1560 1204 
        LINE N 1552 1228 1588 1264 
        LINE N 1592 1224 1560 1268 
        LINE N 1552 1292 1588 1328 
        LINE N 1592 1288 1560 1332 
        LINE N 1552 1356 1588 1392 
        LINE N 1592 1352 1560 1396 
        LINE N 1552 1484 1588 1520 
        LINE N 1592 1480 1560 1524 
        LINE N 1552 1996 1588 2032 
        LINE N 1592 1992 1560 2036 
        LINE N 1592 1928 1560 1972 
        LINE N 1552 1932 1588 1968 
        LINE N 1552 1868 1588 1904 
        LINE N 1592 1864 1560 1908 
        LINE N 1552 2124 1588 2160 
        LINE N 1592 2120 1560 2164 
        BEGIN BRANCH locked_i
            WIRE 4800 1200 4816 1200
            BEGIN DISPLAY 4816 1200 ATTR Name
                ALIGNMENT SOFT-LEFT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 4800 1648 4816 1648
            BEGIN DISPLAY 4816 1648 ATTR Name
                ALIGNMENT SOFT-LEFT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 4672 1168 4672 1200
            WIRE 4672 1168 4816 1168
            BEGIN DISPLAY 4816 1168 ATTR Name
                ALIGNMENT SOFT-LEFT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 4672 1600 4672 1648
            WIRE 4672 1600 4816 1600
            BEGIN DISPLAY 4816 1600 ATTR Name
                ALIGNMENT SOFT-LEFT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 2192 1056 2272 1056
            BEGIN DISPLAY 2192 1056 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN INSTANCE XLXI_51 3360 864 R0
        END INSTANCE
        BEGIN BRANCH clk_i
            WIRE 2176 1184 2272 1184
            BEGIN DISPLAY 2176 1184 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 3328 640 3360 640
            BEGIN DISPLAY 3328 640 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 3328 768 3360 768
            BEGIN DISPLAY 3328 768 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 3328 912 3376 912
            BEGIN DISPLAY 3328 912 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 3328 1040 3376 1040
            BEGIN DISPLAY 3328 1040 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 3328 1184 3376 1184
            BEGIN DISPLAY 3328 1184 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 3328 1312 3376 1312
            BEGIN DISPLAY 3328 1312 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 3328 1456 3376 1456
            BEGIN DISPLAY 3328 1456 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 3312 1584 3376 1584
            BEGIN DISPLAY 3312 1584 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH sd_add_o(10:0)
            WIRE 5072 3120 5152 3120
            WIRE 5152 3120 5248 3120
            BEGIN DISPLAY 5152 3120 ATTR Name
                ALIGNMENT SOFT-BCENTER
            END DISPLAY
        END BRANCH
        BEGIN BRANCH locked_i
            WIRE 4592 3232 4688 3232
            BEGIN DISPLAY 4592 3232 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH clk_i
            WIRE 4576 3184 4688 3184
            BEGIN DISPLAY 4576 3184 ATTR Name
                ALIGNMENT SOFT-RIGHT
            END DISPLAY
        END BRANCH
        BEGIN BRANCH sd_add(10:0)
            WIRE 5632 3120 5824 3120
        END BRANCH
        BEGIN INSTANCE XLXI_110 5248 3168 R0
        END INSTANCE
        BEGIN INSTANCE XLXI_108 4688 3264 R0
        END INSTANCE
        IOMARKER 5824 3120 sd_add(10:0) R0 28
        IOMARKER 800 2768 data_addr_n R180 28
        BEGIN BRANCH sd_dqm(3:0)
            WIRE 1328 800 1360 800
        END BRANCH
        INSTANCE XLXI_119 1104 832 R0
        INSTANCE XLXI_117 1104 896 R0
        INSTANCE XLXI_118 1104 960 R0
        BEGIN BRANCH sd_cs2
            WIRE 1328 928 1408 928
        END BRANCH
        BEGIN BRANCH sd_cs1
            WIRE 1328 864 1408 864
        END BRANCH
        BEGIN BRANCH XLXN_2187
            WIRE 1056 800 1104 800
            WIRE 1056 800 1056 864
            WIRE 1056 864 1056 928
            WIRE 1056 928 1104 928
            WIRE 1056 928 1056 944
            WIRE 1056 864 1104 864
        END BRANCH
        INSTANCE XLXI_773 992 1072 R0
        INSTANCE XLXI_116 1104 752 R0
        BEGIN BRANCH sd_cke
            WIRE 1328 720 1408 720
        END BRANCH
        INSTANCE XLXI_776 992 720 R0
        BEGIN BRANCH XLXN_2192
            WIRE 1056 720 1104 720
        END BRANCH
        IOMARKER 1360 800 sd_dqm(3:0) R0 28
        IOMARKER 1408 864 sd_cs1 R0 28
        IOMARKER 1408 928 sd_cs2 R0 28
        IOMARKER 1408 720 sd_cke R0 28
    END SHEET
END SCHEMATIC