Merge pull request #149 from azonenberg/master

GP_RCOSC and GP_SHREG cells plus some cleanup
This commit is contained in:
Clifford Wolf 2016-04-19 10:37:04 +02:00
commit bf64974d43
1 changed files with 175 additions and 115 deletions

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@ -1,49 +1,3 @@
module GP_DFF(input D, CLK, output reg Q);
parameter [0:0] INIT = 1'bx;
initial Q = INIT;
always @(posedge CLK) begin
Q <= D;
end
endmodule
module GP_DFFS(input D, CLK, nSET, output reg Q);
parameter [0:0] INIT = 1'bx;
initial Q = INIT;
always @(posedge CLK, negedge nSET) begin
if (!nSET)
Q <= 1'b1;
else
Q <= D;
end
endmodule
module GP_DFFR(input D, CLK, nRST, output reg Q);
parameter [0:0] INIT = 1'bx;
initial Q = INIT;
always @(posedge CLK, negedge nRST) begin
if (!nRST)
Q <= 1'b0;
else
Q <= D;
end
endmodule
module GP_DFFSR(input D, CLK, nSR, output reg Q);
parameter [0:0] INIT = 1'bx;
parameter [0:0] SRMODE = 1'bx;
initial Q = INIT;
always @(posedge CLK, negedge nSR) begin
if (!nSR)
Q <= SRMODE;
else
Q <= D;
end
endmodule
module GP_INV(input IN, output OUT);
assign OUT = ~IN;
endmodule
module GP_2LUT(input IN0, IN1, output OUT);
parameter [3:0] INIT = 0;
assign OUT = INIT[{IN1, IN0}];
@ -59,62 +13,12 @@ module GP_4LUT(input IN0, IN1, IN2, IN3, output OUT);
assign OUT = INIT[{IN3, IN2, IN1, IN0}];
endmodule
module GP_VDD(output OUT);
assign OUT = 1;
endmodule
module GP_VSS(output OUT);
assign OUT = 0;
endmodule
module GP_LFOSC(input PWRDN, output reg CLKOUT);
module GP_BANDGAP(output reg OK, output reg VOUT);
parameter AUTO_PWRDN = 1;
parameter CHOPPER_EN = 1;
parameter OUT_DELAY = 100;
parameter PWRDN_EN = 0;
parameter AUTO_PWRDN = 0;
parameter OUT_DIV = 1;
initial CLKOUT = 0;
//auto powerdown not implemented for simulation
//output dividers not implemented for simulation
always begin
if(PWRDN)
CLKOUT = 0;
else begin
//half period of 1730 Hz
#289017;
CLKOUT = ~CLKOUT;
end
end
endmodule
module GP_RINGOSC(input PWRDN, output reg CLKOUT_PREDIV, output reg CLKOUT_FABRIC);
parameter PWRDN_EN = 0;
parameter AUTO_PWRDN = 0;
parameter PRE_DIV = 1;
parameter FABRIC_DIV = 1;
initial CLKOUT_PREDIV = 0;
initial CLKOUT_FABRIC = 0;
//output dividers not implemented for simulation
//auto powerdown not implemented for simulation
always begin
if(PWRDN) begin
CLKOUT_PREDIV = 0;
CLKOUT_FABRIC = 0;
end
else begin
//half period of 27 MHz
#18.518;
CLKOUT_PREDIV = ~CLKOUT_PREDIV;
CLKOUT_FABRIC = ~CLKOUT_FABRIC;
end
end
//cannot simulate mixed signal IP
endmodule
@ -167,24 +71,74 @@ module GP_COUNT14(input CLK, input wire RST, output reg OUT);
endmodule
//keep constraint needed to prevent optimization since we have no outputs
(* keep *)
module GP_SYSRESET(input RST);
parameter RESET_MODE = "RISING";
//cannot simulate whole system reset
module GP_DFF(input D, CLK, output reg Q);
parameter [0:0] INIT = 1'bx;
initial Q = INIT;
always @(posedge CLK) begin
Q <= D;
end
endmodule
module GP_BANDGAP(output reg OK, output reg VOUT);
parameter AUTO_PWRDN = 1;
parameter CHOPPER_EN = 1;
parameter OUT_DELAY = 100;
//cannot simulate mixed signal IP
module GP_DFFR(input D, CLK, nRST, output reg Q);
parameter [0:0] INIT = 1'bx;
initial Q = INIT;
always @(posedge CLK, negedge nRST) begin
if (!nRST)
Q <= 1'b0;
else
Q <= D;
end
endmodule
module GP_DFFS(input D, CLK, nSET, output reg Q);
parameter [0:0] INIT = 1'bx;
initial Q = INIT;
always @(posedge CLK, negedge nSET) begin
if (!nSET)
Q <= 1'b1;
else
Q <= D;
end
endmodule
module GP_DFFSR(input D, CLK, nSR, output reg Q);
parameter [0:0] INIT = 1'bx;
parameter [0:0] SRMODE = 1'bx;
initial Q = INIT;
always @(posedge CLK, negedge nSR) begin
if (!nSR)
Q <= SRMODE;
else
Q <= D;
end
endmodule
module GP_INV(input IN, output OUT);
assign OUT = ~IN;
endmodule
module GP_LFOSC(input PWRDN, output reg CLKOUT);
parameter PWRDN_EN = 0;
parameter AUTO_PWRDN = 0;
parameter OUT_DIV = 1;
initial CLKOUT = 0;
//auto powerdown not implemented for simulation
//output dividers not implemented for simulation
always begin
if(PWRDN)
CLKOUT = 0;
else begin
//half period of 1730 Hz
#289017;
CLKOUT = ~CLKOUT;
end
end
endmodule
module GP_POR(output reg RST_DONE);
parameter POR_TIME = 500;
@ -206,3 +160,109 @@ module GP_POR(output reg RST_DONE);
end
endmodule
module GP_RCOSC(input PWRDN, output reg CLKOUT_PREDIV, output reg CLKOUT_FABRIC);
parameter PWRDN_EN = 0;
parameter AUTO_PWRDN = 0;
parameter PRE_DIV = 1;
parameter FABRIC_DIV = 1;
parameter OSC_FREQ = "25k";
initial CLKOUT_PREDIV = 0;
initial CLKOUT_FABRIC = 0;
//output dividers not implemented for simulation
//auto powerdown not implemented for simulation
always begin
if(PWRDN) begin
CLKOUT_PREDIV = 0;
CLKOUT_FABRIC = 0;
end
else begin
if(OSC_FREQ == "25k") begin
//half period of 25 kHz
#20000;
end
else begin
//half period of 2 MHz
#250;
end
CLKOUT_PREDIV = ~CLKOUT_PREDIV;
CLKOUT_FABRIC = ~CLKOUT_FABRIC;
end
end
endmodule
module GP_RINGOSC(input PWRDN, output reg CLKOUT_PREDIV, output reg CLKOUT_FABRIC);
parameter PWRDN_EN = 0;
parameter AUTO_PWRDN = 0;
parameter PRE_DIV = 1;
parameter FABRIC_DIV = 1;
initial CLKOUT_PREDIV = 0;
initial CLKOUT_FABRIC = 0;
//output dividers not implemented for simulation
//auto powerdown not implemented for simulation
always begin
if(PWRDN) begin
CLKOUT_PREDIV = 0;
CLKOUT_FABRIC = 0;
end
else begin
//half period of 27 MHz
#18.518;
CLKOUT_PREDIV = ~CLKOUT_PREDIV;
CLKOUT_FABRIC = ~CLKOUT_FABRIC;
end
end
endmodule
module GP_SHREG(input nRST, input CLK, input IN, output OUTA, output OUTB);
parameter OUTA_DELAY = 1;
parameter OUTA_INVERT = 0;
parameter OUTB_DELAY = 1;
reg[15:0] shreg = 0;
always @(posedge clk, negedge RSTN) begin
if(!nRST)
shreg = 0;
else
shreg <= {shreg[14:0], IN};
end
assign OUTA = (OUTA_INVERT) ? ~shreg[OUTA_DELAY - 1] : shreg[OUTA_DELAY - 1];
assign OUTB = shreg[OUTB_DELAY - 1];
endmodule
//keep constraint needed to prevent optimization since we have no outputs
(* keep *)
module GP_SYSRESET(input RST);
parameter RESET_MODE = "RISING";
//cannot simulate whole system reset
endmodule
module GP_VDD(output OUT);
assign OUT = 1;
endmodule
module GP_VSS(output OUT);
assign OUT = 0;
endmodule