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/rtl/dport_ram.v.bak
0,0 → 1,64
/*single clock dual port ram |
2010-2011 sclai <laikos@yahoo.com> |
|
This library is free software; you can redistribute it and/or modify it |
under the terms of the GNU Lesser General Public License as published by |
the Free Software Foundation; either version 2.1 of the License, |
or (at your option) any later version. |
|
This library is distributed in the hope that it will be useful, but |
WITHOUT ANY WARRANTY; without even the implied warranty of |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
Lesser General Public License for more details. |
|
You should have received a copy of the GNU Lesser General Public |
License along with this library; if not, write to the Free Software |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
USA |
|
|
Example: |
Desity Bank Row Col |
----------------------------- |
64MB 2:0 12:0 9:0 |
128MB 2:0 13:0 9:0 |
512MB 2:0 13:0 10:0 |
1GB 2:0 15:0 10:0 |
*/ |
|
module dport_ram |
#( |
parameter DATA_WIDTH=8, |
parameter ADDR_WIDTH=36 |
)( |
input clk, |
input [(DATA_WIDTH-1):0] di, |
input [(ADDR_WIDTH-1):0] read_addr, |
input [(ADDR_WIDTH-1):0] write_addr, |
input we, |
output reg [(DATA_WIDTH-1):0] do |
); |
//localparam ACTUAL_ADDR_WIDTH=16; //due to small size of internal memory |
localparam ACTUAL_ADDR_WIDTH=23; //due to small size of internal memory |
wire [ACTUAL_ADDR_WIDTH-1:0]ACTUAL_WRITE_ADDR; |
wire [ACTUAL_ADDR_WIDTH-1:0]ACTUAL_READ_ADDR; |
//bank row col |
//assign ACTUAL_WRITE_ADDR={write_addr[34:32],write_addr[25:16],write_addr[7:0]}; |
//assign ACTUAL_READ_ADDR ={ read_addr[34:32], read_addr[25:16], read_addr[7:0]}; |
assign ACTUAL_WRITE_ADDR={write_addr[34:32],write_addr[28:16],write_addr[9:0]}; |
assign ACTUAL_READ_ADDR ={ read_addr[34:32], read_addr[28:16], read_addr[9:0]}; |
//8196Kbytes RAM |
reg [DATA_WIDTH-1:0] ram[2**ACTUAL_ADDR_WIDTH-1:0]; |
|
always @ (posedge clk) |
begin |
if (we==1'b1) |
begin |
ram[ACTUAL_WRITE_ADDR] <= di; |
end |
else |
begin |
do <= ram[ACTUAL_READ_ADDR]; |
end |
end |
endmodule |
/rtl/ddr3_simple4.v.bak
0,0 → 1,491
/* |
*DDR3 Simple Synthesizable Memory BFM |
*2010-2011 sclai <laikos@yahoo.com> |
* |
*This library is free software; you can redistribute it and/or modify it |
* under the terms of the GNU Lesser General Public License as published by |
* the Free Software Foundation; either version 2.1 of the License, |
* or (at your option) any later version. |
* |
* This library is distributed in the hope that it will be useful, but |
* WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with this library; if not, write to the Free Software |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
* USA |
* |
* |
* Simple implementation of DDR3 Memory |
* will only reponse to write and read request |
* parameter |
* count start from t0,t2,t2... |
* ck _|-|_|-|_|-|_|-|_ |
* |
* cs#---|___|--------- |
* |
* | | | |
* t0 t1 t2 .... |
* |
*/ |
|
`timescale 1ps / 1ps |
|
module ddr3_simple4#( |
parameter MEM_DQ_WIDTH =8, |
parameter MEM_BA_WIDTH =3, |
parameter MEM_ROW_WIDTH =13, |
parameter MEM_COL_WIDTH =13, |
parameter MEM_TRTP =6, |
parameter MEM_TRCD =11, |
parameter MEM_TWL =8, |
parameter MEM_TRL =6, |
parameter MEM_ACT_CMD =7 //activates to command |
)( |
input wire [MEM_ROW_WIDTH-1:0] a, |
input wire [ MEM_BA_WIDTH-1:0] ba, |
input wire ck, |
input wire ck_n, |
input wire cke, |
input wire cs_n, |
input wire dm, |
input wire ras_n, |
input wire cas_n, |
input wire we_n, |
input wire reset_n, |
inout wire [MEM_DQ_WIDTH-1:0] dq, |
inout wire dqs, |
inout wire dqs_n, |
input wire odt |
); |
|
|
//definitions |
localparam OPCODE_PRECHARGE = 4'b0010; |
localparam OPCODE_ACTIVATE = 4'b0011; |
localparam OPCODE_WRITE = 4'b0100; |
localparam OPCODE_READ = 4'b0101; |
localparam OPCODE_MRS = 4'b0000; |
localparam OPCODE_REFRESH = 4'b0001; |
localparam OPCODE_DES = 4'b1000; |
localparam OPCODE_ZQC = 4'b0110; |
localparam OPCODE_NOP = 4'b0111; |
|
localparam BL8 = 1'b1; |
localparam BC4 = 1'b0; |
|
|
//mode registers |
reg [31:0] mr0; |
reg [31:0] mr2; |
reg [31:0] mr3; |
|
|
wire [35:0] write_add; |
wire [35:0] read_add; |
wire [3:0] write_cmd; |
wire [3:0] read_cmd; |
(* keep *)wire [(MEM_DQ_WIDTH*2)-1:0] read_data; |
|
reg [ 2:0] last_bank; |
reg [15:0] last_row; |
reg [3:0] last_write_cmd; |
reg [3:0] last_read_cmd; |
reg [35:0] last_write_add; |
reg [35:0] last_read_add; |
|
reg write_address12; |
reg read_address12; |
|
//bank tracker |
reg [MEM_ROW_WIDTH-1:0]opened_row[(2**MEM_BA_WIDTH)-1:0]; |
//row tracker |
|
wire [MEM_DQ_WIDTH-1:0] dq_out; |
reg [MEM_DQ_WIDTH-1:0] dq_in0; |
|
(* keep *) wire [MEM_DQ_WIDTH-1:0] data_hi; |
(* keep *) wire [MEM_DQ_WIDTH-1:0] data_lo; |
(* keep *) wire data_hi_dm; |
(* keep *) wire data_lo_dm; |
//IDDR |
my_iddrx8 iddrx8_inst( |
.clk(ck), |
.io(dq), |
.d0(data_lo), |
.d1(data_hi) |
); |
|
my_iddrx8 iddrx8_dm_inst( |
.clk(ck), |
.io(dm), |
.d0(data_lo_dm), |
.d1(data_hi_dm) |
); |
|
//ODDR |
my_oddrx8 oddrx8_inst( |
.clk(ck), |
.d0(read_data[ MEM_DQ_WIDTH-1:0 ]), |
.d1(read_data[(MEM_DQ_WIDTH*2)-1:MEM_DQ_WIDTH]), |
.io(dq_out) |
); |
|
//double data rate |
always @(posedge ck ) |
begin |
if(reset_n==1'b0) |
begin |
last_bank <=4'h0; |
last_row <=16'h0000; |
end |
else |
begin |
case({cs_n,ras_n,cas_n,we_n}) |
/* |
OPCODE_PRECHARGE :begin |
$display("t=%d,PRECHARGE",vip_clk); |
end |
*/ |
OPCODE_ACTIVATE :begin |
opened_row [ba] <={{(16-MEM_ROW_WIDTH){1'b0}},a[MEM_ROW_WIDTH-1:0]}; |
end |
/* |
OPCODE_DES :begin |
$display("t=%d,DES",vip_clk); |
end |
OPCODE_MRS :begin |
$display("t=%d,MRS",vip_clk); |
end |
OPCODE_NOP :begin |
//$display("t=%d,NOP",vip_clk); |
end |
*/ |
OPCODE_READ :begin |
last_read_add <={ba,opened_row[ba],{{(16-MEM_COL_WIDTH){1'b0}},a[MEM_COL_WIDTH-1:0]}}; |
last_read_cmd <=OPCODE_READ; |
end |
OPCODE_WRITE :begin |
last_write_add <={ba,opened_row[ba],{{(16-MEM_COL_WIDTH){1'b0}},a[MEM_COL_WIDTH-1:0]}}; |
last_write_cmd <=OPCODE_WRITE; |
end |
/* |
OPCODE_ZQC :begin |
$display("t=%d,ZQC",vip_clk); |
end*/ |
default:begin |
last_read_cmd <=OPCODE_NOP; |
last_write_cmd <=OPCODE_NOP; |
end |
endcase |
end // end reset |
end // end always@(*) |
|
|
|
//cmd |
//read |
ddr3_sr4 #( |
.PIPE_LEN(MEM_TRL) |
)ddr3_read_cmd_sr( |
.clk(ck), |
.shift_in(last_read_cmd), |
.shift_out(read_cmd) |
); |
//bank, row, col |
ddr3_sr36 #( |
.PIPE_LEN(MEM_TRL+1) |
)ddr3_read_add_sr( |
.clk(ck), |
.shift_in(last_read_add), |
.shift_out(read_add) |
); |
|
//cmd |
//write |
ddr3_sr4#( |
.PIPE_LEN(MEM_TWL) |
)ddr3_write_cmd_sr( |
.clk(ck), |
.shift_in(last_write_cmd), |
.shift_out(write_cmd) |
); |
|
//bank, row, col |
ddr3_sr36#( |
.PIPE_LEN(MEM_TWL+1) //have to be a cycle late to wait for IDDR latency |
) ddr3_write_add_sr( |
.clk(ck), |
.shift_in(last_write_add), |
.shift_out(write_add) |
); |
|
|
//write fsm |
localparam WR_D0 =4'd0; |
localparam WR_D1 =4'd1; |
localparam WR_D2 =4'd2; |
localparam WR_D3 =4'd3; |
localparam WR_IDLE=4'd5; |
reg [3:0] write_state; |
reg mem_we; |
reg [2:0] write_col; |
always@(posedge ck) |
begin |
if(reset_n==1'b0) |
begin |
write_state<=WR_IDLE; |
mem_we<=1'b0; |
write_col<=0; |
end |
else |
begin |
case(write_state) |
WR_IDLE:begin |
write_col<=0; |
if(write_cmd==OPCODE_WRITE) |
begin |
write_state<=WR_D0; |
mem_we<=1'b1; |
end |
else |
begin |
write_state<=WR_IDLE; |
mem_we<=1'b0; |
end |
end |
WR_D0:begin |
write_address12<=write_add[12]; |
write_state<=WR_D1; |
write_col<=write_col+1'b1; |
$display("%m: at time %t\tWRITE BANK[%x]\tROW[%x]\tCOL[%x]\tWR D0: %x-%x",$time,write_add[34:32],write_add[31:16],write_add[15:0],data_hi,data_lo); |
end |
WR_D1:begin |
if(write_address12==1'b1) |
begin |
write_state<=WR_D2; |
write_col<=write_col+1'b1; |
end |
else if (write_cmd==OPCODE_WRITE) |
begin |
write_state<=WR_D0; |
write_col<=0; |
end |
else |
begin |
write_state<=WR_IDLE; |
mem_we<=1'b0; |
end |
$display("%m: at time %t\tWRITE BANK[%x]\tROW[%x]\tCOL[%x]\tWR D1: %x-%x",$time,write_add[34:32],write_add[31:16],write_add[15:0],data_hi,data_lo); |
end |
WR_D2:begin |
write_state<=WR_D3; |
write_col<=write_col+1'b1; |
$display("%m: at time %t\tWRITE BANK[%x]\tROW[%x]\tCOL[%x]\tWR D2: %x-%x",$time,write_add[34:32],write_add[31:16],write_add[15:0],data_hi,data_lo); |
end |
WR_D3:begin |
$display("%m: at time %t\tWRITE BANK[%x]\tROW[%x]\tCOL[%x]\tWR D3: %x-%x",$time,write_add[34:32],write_add[31:16],write_add[15:0],data_hi,data_lo); |
|
//write_col<=write_col+1'b1; |
if (write_cmd==OPCODE_WRITE) |
begin |
write_state<=WR_D0; |
write_col<=0; |
end |
else |
begin |
write_state<=WR_IDLE; |
mem_we<=1'b0; |
end |
end |
endcase |
end //endif |
end |
|
|
//read fsm |
localparam RD_D0 =4'd0; |
localparam RD_D1 =4'd1; |
localparam RD_D2 =4'd2; |
localparam RD_D3 =4'd3; |
localparam RD_IDLE=4'd5; |
|
reg [3:0] read_state; |
reg [2:0] read_col; |
reg send_dq; |
reg send_dqs0; |
reg send_dqs1; |
|
always@(posedge ck) |
begin |
if(reset_n==1'b0) |
begin |
read_state<=RD_IDLE; |
read_col <=0; |
send_dq <=0; |
end |
else |
begin |
case(read_state) |
RD_IDLE:begin |
read_col<=0; |
send_dq<=0; |
if(read_cmd==OPCODE_READ) |
begin |
read_state<=RD_D0; |
end |
else |
begin |
read_state<=RD_IDLE; |
end |
end |
RD_D0:begin |
read_address12<=read_add[12]; |
read_state<=RD_D1; |
read_col<=read_col+1'b1; |
send_dq <=1'b1; |
$display("%m: at time %t\tREAD BANK[%x]\tROW[%x]\tCOL[%x]\tRD D0",$time,read_add[34:32],read_add[31:16],read_add[15:0]); |
end |
RD_D1:begin |
if(read_address12==1'b1) |
begin |
read_state<=RD_D2; |
read_col<=read_col+1'b1; |
end |
else if (read_cmd==OPCODE_READ) |
begin |
read_state<=RD_D0; |
read_col<=0; |
send_dq <=1'b1; |
end |
else |
begin |
read_state<=RD_IDLE; |
//send_dq <=1'b0; |
end |
$display("%m: at time %t\tREAD BANK[%x]\tROW[%x]\tCOL[%x]\tRD D1",$time,read_add[34:32],read_add[31:16],read_add[15:0]); |
end |
RD_D2:begin |
read_state<=RD_D3; |
read_col<=read_col+1'b1; |
send_dq <=1'b1; |
$display("%m: at time %t\tREAD BANK[%x]\tROW[%x]\tCOL[%x]\tRD D2",$time,read_add[34:32],read_add[31:16],read_add[15:0]); |
end |
RD_D3:begin |
//write_col<=write_col+1'b1; |
if (read_cmd==OPCODE_READ) |
begin |
read_state<=RD_D0; |
read_col<=0; |
send_dq <=1'b1; |
end |
else |
begin |
read_state<=RD_IDLE; |
read_col<=0; |
//send_dq <=1'b0; |
end |
$display("%m: at time %t\tREAD BANK[%x]\tROW[%x]\tCOL[%x]\tRD D3",$time,read_add[34:32],read_add[31:16],read_add[15:0]); |
end |
endcase |
end |
|
end //end always |
|
//dqs fsm |
always @(posedge ck_n) |
begin |
if(reset_n==1'b0) |
begin |
send_dqs1<=0; |
send_dqs0<=0; |
end |
else |
begin |
if(read_cmd==OPCODE_READ) |
begin |
send_dqs1<=1'b1; |
end |
else |
begin |
send_dqs1<=1'b0; |
end |
end |
send_dqs0<=send_dqs1; |
end//end always |
|
//ram here |
dport_ram #( |
.DATA_WIDTH(8), //data_hi,data_lo |
.ADDR_WIDTH(36) |
)dport_ram_hi( |
.clk (ck), |
.di (data_hi), |
.read_addr (read_add+read_col), |
.write_addr (write_add+write_col), |
.we (mem_we & data_hi_dm), |
.do (read_data[15:8]) |
); |
|
dport_ram #( |
.DATA_WIDTH(8), //data_hi,data_lo |
.ADDR_WIDTH(36) |
)dport_ram_lo( |
.clk (ck), |
.di (data_lo), |
.read_addr (read_add+read_col), |
.write_addr (write_add+write_col), |
.we (mem_we & data_lo_dm), |
.do (read_data[7:0]) |
); |
assign dqs =((send_dqs0==1'b1) || (send_dq==1'b1))?ck:1'bz; |
assign dqs_n=((send_dqs0==1'b1) || (send_dq==1'b1))?ck_n:1'bz; |
assign dq = (send_dq==1'b1)?dq_out:8'hZZ; |
|
/* utility functions to display information |
*/ |
initial begin |
$timeformat (-9, 1, " ns", 1); |
end |
|
always @(posedge ck ) |
begin |
case({cs_n,ras_n,cas_n,we_n}) |
|
OPCODE_PRECHARGE :begin |
$display("%m: at time %t PRECHARGE ",$time); |
end |
|
OPCODE_ACTIVATE :begin |
$display("%m: at time %t ACTIVATE - BANK[%x]\tROW[%x]",$time,ba,a); |
end |
|
OPCODE_DES :begin |
$display("%m: at time %t DES ",$time); |
end |
OPCODE_MRS :begin |
$display("%m: at time %t MRS ",$time); |
end |
/*OPCODE_NOP :begin |
/$display("%m: at time %t WRITE ",$time); |
end |
*/ |
/* |
OPCODE_READ :begin |
$display("%m: at time %t READ - BANK[%x]\tROW[%x]\tCOL[%x]",$time,ba,last_row,a); |
end |
OPCODE_WRITE :begin |
$display("%m: at time %t WRITE - BANK[%x]\tROW[%x],\tCOL[%x]",$time,ba,last_row,a); |
end |
*/ |
OPCODE_ZQC :begin |
$display("%m: at time %t ZQC ",$time); |
end |
endcase |
|
end // end always@(*) |
/* end utility*/ |
|
endmodule |
/rtl/dport_ram.v
38,8 → 38,8
input we, |
output reg [(DATA_WIDTH-1):0] do |
); |
//localparam ACTUAL_ADDR_WIDTH=16; //due to small size of internal memory |
localparam ACTUAL_ADDR_WIDTH=26; //due to small size of internal memory |
localparam ACTUAL_ADDR_WIDTH=16; //due to small size of internal memory |
//localparam ACTUAL_ADDR_WIDTH=26; //due to small size of internal memory |
wire [ACTUAL_ADDR_WIDTH-1:0]ACTUAL_WRITE_ADDR; |
wire [ACTUAL_ADDR_WIDTH-1:0]ACTUAL_READ_ADDR; |
//bank row col |
/rtl/ddr3_simple4.v
29,6 → 29,7
* | | | |
* t0 t1 t2 .... |
* |
* |
*/ |
|
`timescale 1ps / 1ps |
38,45 → 39,40
parameter MEM_BA_WIDTH =3, |
parameter MEM_ROW_WIDTH =13, |
parameter MEM_COL_WIDTH =13, |
parameter MEM_TRTP =6, |
parameter MEM_TRCD =11, |
parameter MEM_TWL =8, |
parameter MEM_TRL =6, |
parameter MEM_ACT_CMD =7 //activates to command |
parameter MEM_AL =0, |
parameter MEM_CWL =8, //CWL |
parameter MEM_CL =6 //CL |
)( |
input wire [MEM_ROW_WIDTH-1:0] a, |
input wire [ MEM_BA_WIDTH-1:0] ba, |
input wire ck, |
input wire ck_n, |
input wire cke, |
input wire cs_n, |
input wire dm, |
input wire ras_n, |
input wire cas_n, |
input wire we_n, |
input wire reset_n, |
inout wire [MEM_DQ_WIDTH-1:0] dq, |
inout wire dqs, |
inout wire dqs_n, |
input wire odt |
input wire ck, |
input wire ck_n, |
input wire cke, |
input wire cs_n, |
input wire dm, |
input wire ras_n, |
input wire cas_n, |
input wire we_n, |
input wire reset_n, |
inout wire [MEM_DQ_WIDTH-1:0] dq, |
inout wire dqs, |
inout wire dqs_n, |
input wire odt |
); |
|
//convert actual CL and CWL parameter to |
|
//definitions |
localparam OPCODE_PRECHARGE = 4'b0010; |
localparam OPCODE_ACTIVATE = 4'b0011; |
localparam OPCODE_WRITE = 4'b0100; |
localparam OPCODE_READ = 4'b0101; |
localparam OPCODE_MRS = 4'b0000; |
localparam OPCODE_REFRESH = 4'b0001; |
localparam OPCODE_DES = 4'b1000; |
localparam OPCODE_ZQC = 4'b0110; |
localparam OPCODE_NOP = 4'b0111; |
localparam OPCODE_PRECHARGE = 4'b0010; |
localparam OPCODE_ACTIVATE = 4'b0011; |
localparam OPCODE_WRITE = 4'b0100; |
localparam OPCODE_READ = 4'b0101; |
localparam OPCODE_MRS = 4'b0000; |
localparam OPCODE_REFRESH = 4'b0001; |
localparam OPCODE_DES = 4'b1000; |
localparam OPCODE_ZQC = 4'b0110; |
localparam OPCODE_NOP = 4'b0111; |
|
localparam BL8 = 1'b1; |
localparam BC4 = 1'b0; |
|
|
//mode registers |
reg [31:0] mr0; |
reg [31:0] mr2; |
108,8 → 104,8
|
(* keep *) wire [MEM_DQ_WIDTH-1:0] data_hi; |
(* keep *) wire [MEM_DQ_WIDTH-1:0] data_lo; |
(* keep *) wire data_hi_dm; |
(* keep *) wire data_lo_dm; |
(* keep *) wire data_hi_dm; |
(* keep *) wire data_lo_dm; |
//IDDR |
my_iddrx8 iddrx8_inst( |
.clk(ck), |
146,39 → 142,39
case({cs_n,ras_n,cas_n,we_n}) |
/* |
OPCODE_PRECHARGE :begin |
$display("t=%d,PRECHARGE",vip_clk); |
end |
$display("t=%d,PRECHARGE",vip_clk); |
end |
*/ |
OPCODE_ACTIVATE :begin |
opened_row [ba] <={{(16-MEM_ROW_WIDTH){1'b0}},a[MEM_ROW_WIDTH-1:0]}; |
end |
opened_row [ba] <={{(16-MEM_ROW_WIDTH){1'b0}},a[MEM_ROW_WIDTH-1:0]}; |
end |
/* |
OPCODE_DES :begin |
$display("t=%d,DES",vip_clk); |
end |
OPCODE_DES :begin |
$display("t=%d,DES",vip_clk); |
end |
OPCODE_MRS :begin |
$display("t=%d,MRS",vip_clk); |
end |
$display("t=%d,MRS",vip_clk); |
end |
OPCODE_NOP :begin |
//$display("t=%d,NOP",vip_clk); |
end |
//$display("t=%d,NOP",vip_clk); |
end |
*/ |
OPCODE_READ :begin |
last_read_add <={ba,opened_row[ba],{{(16-MEM_COL_WIDTH){1'b0}},a[MEM_COL_WIDTH-1:0]}}; |
last_read_cmd <=OPCODE_READ; |
end |
last_read_add <={ba,opened_row[ba],{{(16-MEM_COL_WIDTH){1'b0}},a[MEM_COL_WIDTH-1:0]}}; |
last_read_cmd <=OPCODE_READ; |
end |
OPCODE_WRITE :begin |
last_write_add <={ba,opened_row[ba],{{(16-MEM_COL_WIDTH){1'b0}},a[MEM_COL_WIDTH-1:0]}}; |
last_write_cmd <=OPCODE_WRITE; |
end |
last_write_add <={ba,opened_row[ba],{{(16-MEM_COL_WIDTH){1'b0}},a[MEM_COL_WIDTH-1:0]}}; |
last_write_cmd <=OPCODE_WRITE; |
end |
/* |
OPCODE_ZQC :begin |
$display("t=%d,ZQC",vip_clk); |
end*/ |
OPCODE_ZQC :begin |
$display("t=%d,ZQC",vip_clk); |
end*/ |
default:begin |
last_read_cmd <=OPCODE_NOP; |
last_write_cmd <=OPCODE_NOP; |
end |
end |
endcase |
end // end reset |
end // end always@(*) |
188,7 → 184,7
//cmd |
//read |
ddr3_sr4 #( |
.PIPE_LEN(MEM_TRL) |
.PIPE_LEN(MEM_CL) |
)ddr3_read_cmd_sr( |
.clk(ck), |
.shift_in(last_read_cmd), |
196,7 → 192,7
); |
//bank, row, col |
ddr3_sr36 #( |
.PIPE_LEN(MEM_TRL+1) |
.PIPE_LEN(MEM_CL+1) |
)ddr3_read_add_sr( |
.clk(ck), |
.shift_in(last_read_add), |
206,7 → 202,7
//cmd |
//write |
ddr3_sr4#( |
.PIPE_LEN(MEM_TWL) |
.PIPE_LEN(MEM_CWL) |
)ddr3_write_cmd_sr( |
.clk(ck), |
.shift_in(last_write_cmd), |
215,7 → 211,7
|
//bank, row, col |
ddr3_sr36#( |
.PIPE_LEN(MEM_TWL+1) //have to be a cycle late to wait for IDDR latency |
.PIPE_LEN(MEM_CWL+1) //have to be a cycle late to wait for IDDR latency |
) ddr3_write_add_sr( |
.clk(ck), |
.shift_in(last_write_add), |
227,8 → 223,8
localparam WR_D0 =4'd0; |
localparam WR_D1 =4'd1; |
localparam WR_D2 =4'd2; |
localparam WR_D3 =4'd3; |
localparam WR_IDLE=4'd5; |
localparam WR_D3 =4'd3; |
localparam WR_IDLE =4'd5; |
reg [3:0] write_state; |
reg mem_we; |
reg [2:0] write_col; |
309,8 → 305,8
localparam RD_D0 =4'd0; |
localparam RD_D1 =4'd1; |
localparam RD_D2 =4'd2; |
localparam RD_D3 =4'd3; |
localparam RD_IDLE=4'd5; |
localparam RD_D3 =4'd3; |
localparam RD_IDLE =4'd5; |
|
reg [3:0] read_state; |
reg [2:0] read_col; |
418,7 → 414,7
|
//ram here |
dport_ram #( |
.DATA_WIDTH(8), //data_hi,data_lo |
.DATA_WIDTH(MEM_DQ_WIDTH), //data_hi,data_lo |
.ADDR_WIDTH(36) |
)dport_ram_hi( |
.clk (ck), |
430,7 → 426,7
); |
|
dport_ram #( |
.DATA_WIDTH(8), //data_hi,data_lo |
.DATA_WIDTH(MEM_DQ_WIDTH), //data_hi,data_lo |
.ADDR_WIDTH(36) |
)dport_ram_lo( |
.clk (ck), |
446,6 → 442,7
|
/* utility functions to display information |
*/ |
|
initial begin |
$timeformat (-9, 1, " ns", 1); |
end |
455,34 → 452,82
case({cs_n,ras_n,cas_n,we_n}) |
|
OPCODE_PRECHARGE :begin |
$display("%m: at time %t PRECHARGE ",$time); |
end |
$display("%m: at time %t PRECHARGE ",$time); |
end |
|
OPCODE_ACTIVATE :begin |
$display("%m: at time %t ACTIVATE - BANK[%x]\tROW[%x]",$time,ba,a); |
end |
$display("%m: at time %t ACTIVATE - BANK[%x]\tROW[%x]",$time,ba,a); |
end |
|
OPCODE_DES :begin |
$display("%m: at time %t DES ",$time); |
end |
OPCODE_MRS :begin |
$display("%m: at time %t MRS ",$time); |
end |
OPCODE_DES :begin |
$display("%m: at time %t DES ",$time); |
end |
OPCODE_MRS :begin |
$display("%m: at time %t MRS - MR[%d]",$time,ba[1:0]); |
case(ba[1:0]) |
2'b00:begin //MR0 |
case(a[1:0]) // burst length |
2'b00:$display("%m\tBL = BL8 \(Fixed\)"); |
2'b01:$display("%m\tBL = BC4/BL8 OTF"); |
2'b10:$display("%m\tBL = BC4 (Fixed)"); |
2'b11:$display("%m\tBL = Reserved"); |
endcase |
|
case({a[6:4],a[2]}) //CAS Latency |
4'b0000:$display("%m\tCL = Reserved"); |
4'b0010:$display("%m\tCL = 5"); |
4'b0100:$display("%m\tCL = 6"); |
4'b0110:$display("%m\tCL = 7"); |
4'b1000:$display("%m\tCL = 8"); |
4'b1010:$display("%m\tCL = 9"); |
4'b1100:$display("%m\tCL = 10"); |
4'b1111:$display("%m\tCL = 11(Optional for DD3-1600)"); |
4'b0001:$display("%m\tCL = 12"); |
4'b0011:$display("%m\tCL = 13"); |
4'b0101:$display("%m\tCL = 14"); |
4'b0111:$display("%m\tCL = Reserved for 15"); |
4'b1001:$display("%m\tCL = Reserved for 16"); |
4'b1011:$display("%m\tCL = Reserved"); |
4'b1101:$display("%m\tCL = Reserved"); |
4'b1111:$display("%m\tCL = Reserved"); |
endcase |
|
case(a[11:9]) //Write Recover |
3'b000:$display("%m\tWR = 16^2(256 cycles)"); |
3'b001:$display("%m\tWR = 5^2( 25 cycles)"); |
3'b010:$display("%m\tWR = 6^2( 36 cycles)"); |
3'b011:$display("%m\tWR = 7^2( 49 cycles)"); |
3'b100:$display("%m\tWR = 8^2( 64 cycles)"); |
3'b101:$display("%m\tWR = 10^2(100 cycles)"); |
3'b110:$display("%m\tWR = 12^2(144 cycles)"); |
3'b111:$display("%m\tWR = 14^2(196 cycles)"); |
endcase |
end//end MR0 |
2'b01:begin //MR1 |
end//end MR1 |
2'b10:begin //MR2 |
end//end MR2 |
2'b11:begin //MR3 |
end//end MR3 |
endcase //end which MRS |
|
|
end //end MRS |
/*OPCODE_NOP :begin |
/$display("%m: at time %t WRITE ",$time); |
end |
/$display("%m: at time %t WRITE ",$time); |
end |
*/ |
/* |
OPCODE_READ :begin |
$display("%m: at time %t READ - BANK[%x]\tROW[%x]\tCOL[%x]",$time,ba,last_row,a); |
end |
$display("%m: at time %t READ - BANK[%x]\tROW[%x]\tCOL[%x]",$time,ba,last_row,a); |
end |
OPCODE_WRITE :begin |
$display("%m: at time %t WRITE - BANK[%x]\tROW[%x],\tCOL[%x]",$time,ba,last_row,a); |
end |
$display("%m: at time %t WRITE - BANK[%x]\tROW[%x],\tCOL[%x]",$time,ba,last_row,a); |
end |
*/ |
OPCODE_ZQC :begin |
$display("%m: at time %t ZQC ",$time); |
end |
OPCODE_ZQC :begin |
$display("%m: at time %t ZQC ",$time); |
end |
endcase |
|
end // end always@(*) |