moved all parameters to the main verilog file
This commit is contained in:
Angelo Jacobo
GitHub
parent
86e01b060e
commit
71df6f7515
|
|
@ -1,176 +0,0 @@
|
|||
// Some parameters are salvaged from Micron DDR3 Simulation Model Files ( https://www.micron.com/products/dram/ddr3-sdram/part-catalog/mt41k128m16jt-125 )
|
||||
|
||||
|
||||
localparam CONTROLLER_CLK_PERIOD = 5.0; //200MHz controller clock (5ns)
|
||||
localparam DDR3_CLK_PERIOD = 1.25; //800MHz DDR3 clock (1.25ns)
|
||||
|
||||
////////////////////////////////////////////////////////////// COMMAND PARAMETERS //////////////////////////////////////////////////////////////
|
||||
|
||||
//DDR3 commands {cs_n, ras_n, cas_n, we_n} (JEDEC DDR3 doc pg. 33 )
|
||||
localparam[3:0] CMD_MRS = 4'b0000; // Mode Register Set
|
||||
localparam[3:0] CMD_REF = 4'b0001; // Refresh
|
||||
localparam[3:0] CMD_PRE = 4'b0010; // Precharge (A10-AP: 0 = Single Bank Precharge, 1 = Precharge All Banks)
|
||||
localparam[3:0] CMD_ACT = 4'b0011; // Bank Activate
|
||||
localparam[3:0] CMD_WR = 4'b0100; // Write (A10-AP: 0 = no Auto-Precharge) (A12-BC#: 1 = Burst Length 8)
|
||||
localparam[3:0] CMD_RD = 4'b0101; //Read (A10-AP: 0 = no Auto-Precharge) (A12-BC#: 1 = Burst Length 8)
|
||||
localparam[3:0] CMD_NOP = 4'b0111; // No Operation
|
||||
localparam[3:0] CMD_DES = 4'b1000; // Deselect command performs the same function as No Operation command (JEDEC DDR3 doc pg. 34 NOTE 11)
|
||||
localparam[3:0] CMD_ZQC = 4'b0110; // ZQ Calibration (A10-AP: 0 = ZQ Calibration Short, 1 = ZQ Calibration Long)
|
||||
|
||||
localparam RST_USE_TIMER = 26; // Command bit that determines if timer will be used
|
||||
localparam RST_STAY_COMMAND = 25; //Command bit that determines if command will last for entire timer duration (or if
|
||||
localparam RST_CKE = 24; //Control clock-enable input to DDR3
|
||||
localparam RST_RESET_N = 23; //Control reset to DDR3
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
////////////////////////////////////////////////////////////// SET MODE REGISTERS //////////////////////////////////////////////////////////////
|
||||
|
||||
localparam[2:0] PASR = 3'b000; //Partial Array Self-Refresh: Full Array
|
||||
localparam[2:0] CWL = 3'b011; //CAS write Latency: 8 (1.5 ns > tCK(avg) >= 1.25 ns)
|
||||
localparam ASR = 1'b1; //Auto Self-Refresh: on
|
||||
localparam SRT = 1'b0; //Self-Refresh Temperature Range:0 (If ASR = 1, SRT bit must be set to 0)
|
||||
localparam[1:0] RTT_WR = 2'b00; //Dynamic ODT: off
|
||||
localparam[18:0] MR2 = {3'b010, 5'b00000, RTT_WR, 1'b0, SRT, ASR, CWL, PASR};
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
localparam INITIAL_RESET_HIGH = 200_000; // 200us reset must be high at initialization
|
||||
localparam INITIAL_CKE_LOW = 500_000; // 500us cke must be low before activating
|
||||
|
||||
`ifdef DDR3_1600_11_11_11 //DDR3-1600 (11-11-11) speed bin
|
||||
localparam TRAS = 35; // tRAS ns Minimum Active to Precharge command time
|
||||
localparam TRC = 48.750; // tRC ns Active to Active/Auto Refresh command time
|
||||
localparam TRCD = 13.750; // tRCD ns Active to Read/Write command time
|
||||
localparam TRP = 13.750; // tRP ns Precharge command period
|
||||
`endif
|
||||
|
||||
`ifdef RAM_1Gb
|
||||
localparam TRFC = 110; // ns Refresh command to ACT or REF
|
||||
`elsif RAM_2Gb
|
||||
localparam TRFC = 160; // ns Refresh command to ACT or REF
|
||||
`elsif RAM_4Gb
|
||||
localparam TRFC = 300; // ns Refresh command to ACT or REF
|
||||
`else
|
||||
localparam TRFC = 350; // ns Refresh command to ACT or REF
|
||||
`endif
|
||||
|
||||
localparam TXPR = max(5*DDR3_CLK_PERIOD,TRFC+10); // tXPR ns Exit Reset from CKE HIGH to a valid command
|
||||
localparam TMRD = 4; // tMRD nCK Mode Register Set command cycle time
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
|
||||
////////////////////////////////////////////////////////////// I/O Interface Width //////////////////////////////////////////////////////////////
|
||||
|
||||
`ifdef RAM_1Gb
|
||||
`ifdef x4
|
||||
localparam DM_BITS = 1; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 14 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 14; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 11; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 4 ; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 1 ; // Set this localparam to control how many Dqs bits are used
|
||||
`elsif x8
|
||||
localparam DM_BITS = 1; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 14 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 14; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 10; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 8 ; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 1; // Set this localparam to control how many Dqs bits are used
|
||||
`else
|
||||
localparam DM_BITS = 2; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 13 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 13 ; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 10 ; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 16; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 2; // Set this localparam to control how many Dqs bits are used
|
||||
`endif
|
||||
|
||||
`elsif RAM_2Gb
|
||||
`ifdef x4
|
||||
localparam DM_BITS = 1 ; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 15 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 15; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 11; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 4 ; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 1 ; // Set this localparam to control how many Dqs bits are used
|
||||
`elsif x8
|
||||
localparam DM_BITS = 1 // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 15 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 15; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 10 ; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 8; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 1 ; // Set this localparam to control how many Dqs bits are used
|
||||
`else
|
||||
localparam x16
|
||||
localparam DM_BITS = 2 ; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 14 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 14 ; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 10 ; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 16 ; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 2 ; // Set this localparam to control how many Dqs bits are used
|
||||
`endif
|
||||
|
||||
`elsif RAM_4Gb
|
||||
`ifdef x4
|
||||
localparam DM_BITS = 1; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 16 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 16; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 11; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 4; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 1 ; // Set this localparam to control how many Dqs bits are used
|
||||
`elsif x8
|
||||
localparam DM_BITS = 1; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 16 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 16 ; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 10; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 8 ; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 1 ; // Set this localparam to control how many Dqs bits are used
|
||||
`else
|
||||
localparam x16
|
||||
localparam DM_BITS = 2; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 15 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 15; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 10 ; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 16; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 2 ; // Set this localparam to control how many Dqs bits are used
|
||||
`endif
|
||||
|
||||
`else
|
||||
`ifdef x4
|
||||
localparam DM_BITS = 1 ; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 16 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 16; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 14; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 4 ; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 1 ; // Set this localparam to control how many Dqs bits are used
|
||||
`elsif x8
|
||||
localparam DM_BITS = 1 ; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 16 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 16 ; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 11; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 8 ; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 1 ; // Set this localparam to control how many Dqs bits are used
|
||||
`else
|
||||
localparam DM_BITS = 2; // Set this localparam to control how many Data Mask bits are used
|
||||
localparam ADDR_BITS = 16 ; // MAX Address Bits
|
||||
localparam ROW_BITS = 16; // Set this localparam to control how many Address bits are used
|
||||
localparam COL_BITS = 10; // Set this localparam to control how many Column bits are used
|
||||
localparam DQ_BITS = 16; // Set this localparam to control how many Data bits are used **Same as part bit width**
|
||||
localparam DQS_BITS = 2 ; // Set this localparam to control how many Dqs bits are used
|
||||
`endif
|
||||
`endif
|
||||
|
||||
localparam BA_BITS = 3 ; // Set this parmaeter to control how many Bank Address bits are used
|
||||
localparam AP = 10 ; // the address bit that controls auto-precharge and precharge-all
|
||||
localparam BC = 12; // the address bit that controls burst chop
|
||||
|
||||
|
||||
|
||||
function integer max(input integer a, input integer b);
|
||||
if(a >= b) max = a;
|
||||
else max = b;
|
||||
endfunction
|
||||
|
||||
Loading…
Reference in New Issue