1 //---------------------------------------------------------------------------
4 // (c) Joerg Bornschein (<jb@capsec.org>)
5 //---------------------------------------------------------------------------
13 //---------------------------------------------------------------------------
15 //---------------------------------------------------------------------------
16 `define SYS_CLK_FREQUENCY 50000 // in kHz
17 `define DDR_CLK_MULTIPLY 5
18 `define DDR_CLK_DIVIDE 2
20 //---------------------------------------------------------------------------
22 //---------------------------------------------------------------------------
23 `define FML_ADR_RNG 25:4
24 `define FML_ADR_BA_RNG 25:24
25 `define FML_ADR_ROW_RNG 23:11
26 `define FML_ADR_COL_RNG 10:4
27 `define FML_DAT_RNG 127:0
28 `define FML_MSK_RNG 15:0
30 //---------------------------------------------------------------------------
32 //---------------------------------------------------------------------------
40 `define RFIFO_WIDTH (2 * `DQ_WIDTH )
41 `define WFIFO_WIDTH (2 * (`DQ_WIDTH + `DM_WIDTH))
42 `define CBA_WIDTH (`CMD_WIDTH+`BA_WIDTH+`A_WIDTH)
45 `define CMD_RNG (`CMD_WIDTH-1):0
46 `define A_RNG (`A_WIDTH-1):0
47 `define BA_RNG (`BA_WIDTH-1):0
48 `define DQ_RNG (`DQ_WIDTH-1):0
49 `define DQS_RNG (`DQS_WIDTH-1):0
50 `define DM_RNG (`DM_WIDTH-1):0
52 `define RFIFO_RNG (`RFIFO_WIDTH-1):0
53 `define WFIFO_RNG (`WFIFO_WIDTH-1):0
54 `define WFIFO_D0_RNG (1*`DQ_WIDTH-1):0
55 `define WFIFO_D1_RNG (2*`DQ_WIDTH-1):(`DQ_WIDTH)
56 `define WFIFO_M0_RNG (2*`DQ_WIDTH+1*`DM_WIDTH-1):(2*`DQ_WIDTH+0*`DM_WIDTH)
57 `define WFIFO_M1_RNG (2*`DQ_WIDTH+2*`DM_WIDTH-1):(2*`DQ_WIDTH+1*`DM_WIDTH)
58 `define CBA_RNG (`CBA_WIDTH-1):0
59 `define CBA_CMD_RNG (`CBA_WIDTH-1):(`CBA_WIDTH-3)
60 `define CBA_BA_RNG (`CBA_WIDTH-4):(`CBA_WIDTH-5)
61 `define CBA_A_RNG (`CBA_WIDTH-6):0
65 //---------------------------------------------------------------------------
67 //---------------------------------------------------------------------------
68 `define DDR_CMD_NOP 3'b111
69 `define DDR_CMD_ACT 3'b011
70 `define DDR_CMD_READ 3'b101
71 `define DDR_CMD_WRITE 3'b100
72 `define DDR_CMD_TERM 3'b110
73 `define DDR_CMD_PRE 3'b010
74 `define DDR_CMD_AR 3'b001
75 `define DDR_CMD_MRS 3'b000
77 `define T_MRD 2 // Mode register set
78 `define T_RP 2 // Precharge Command Period
79 `define T_RFC 8 // Precharge Command Period
81 `define DDR_INIT_EMRS `A_WIDTH'b0000000000000 // DLL enable
82 `define DDR_INIT_MRS1 `A_WIDTH'b0000101100011 // BURST=8, CL=2.5, DLL RESET
83 `define DDR_INIT_MRS2 `A_WIDTH'b0000001100011 // BURST=8, CL=2.5
85 `define ADR_BA_RNG 25:24
86 `define ADR_ROW_RNG 23:11
87 `define ADR_COL_RNG 10:4