module RAM2E_UFM(C14M, S, FS, CS,
RWSel, D,
RWMask, LEDEN,
CmdRWMaskSet, CmdLEDSet,
ChipCmdNum);
input C14M;
input [3:0] S;
input [15:0] FS;
input [2:0] CS;
input RWSel;
input [7:0] D;
output reg [7:0] RWMask;
output reg LEDEN;
input CmdRWMaskSet;
input CmdLEDSet;
/* Chip ID */
//output [7:0] ChipCmdNum; assign ChipCmdNum[7:0] = 8'hFF; // MAX
//output [7:0] ChipCmdNum; assign ChipCmdNum[7:0] = 8'hFE; // SPI
output [7:0] ChipCmdNum; assign ChipCmdNum[7:0] = 8'hFD; // MachXO2
/* RAMWorks register control - Lattice MachXO2 */
reg CmdBitbangMXO2 = 0;
reg CmdExecMXO2 = 0;
always @(posedge C14M) begin
if (S==4'hC && RWSel) begin
if (CS==3'h6) begin // Recognize and submit command in CS6
// Altera MAX II/V commands
//CmdBitbangMAX <= D[7:0]==8'hEA;
//if (!CmdEraseMAX && !CmdPrgmMAX) begin
// if (D[7:0]==8'hEE) CmdEraseMAX <= 1;
// if (D[7:0]==8'hEF) CmdPrgmMAX <= 1;
//end
// SPI commands
//CmdBitbangSPI <= D[7:0]==8'hEB;
// MachXO2 commands
CmdBitbangMXO2 <= D[7:0]==8'hEC;
CmdExecMXO2 <= D[7:0]==8'hED;
end else begin // Reset command triggers
CmdBitbangMXO2 <= 0;
CmdExecMXO2 <= 0;
end
end
end
/* UFM Interface */
reg wb_rst;
reg wb_cyc_stb;
reg wb_req;
reg wb_we;
reg [7:0] wb_adr;
reg [7:0] wb_dati;
wire wb_ack;
wire [7:0] wb_dato;
wire ufm_irq;
REFB ufmefb(
.wb_clk_i(C14M),
.wb_rst_i(wb_rst),
.wb_cyc_i(wb_cyc_stb),
.wb_stb_i(wb_cyc_stb),
.wb_we_i(wb_we),
.wb_adr_i(wb_adr),
.wb_dat_i(wb_dati),
.wb_dat_o(wb_dato),
.wb_ack_o(wb_ack),
.wbc_ufm_irq(ufm_irq));
/* UFM Control */
always @(posedge C14M) begin
if (S==4'h0) begin
if (FS[15:14]==2'b00) wb_rst <= 1'b1;
else if (FS[15:14]==2'b01) wb_rst <= 1'b0;
else if (FS[15:14]==2'b10) begin
wb_rst <= 1'b0;
if (wb_ack || (FS[7:0]==0)) wb_cyc_stb <= 0;
else if ((FS[7:0]==1) && wb_req) wb_cyc_stb <= 1;
case (FS[13:8])
0: begin // Open frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h80;
wb_req <= 1;
end 1: begin // Enable config interface - command
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h74;
wb_req <= 1;
end 2: begin // Enable config interface - operand 1/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h08;
wb_req <= 1;
end 3: begin // Enable config interface - operand 2/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 4: begin // Enable config interface - operand 3/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 5: begin // Close frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 6: begin // Open frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h80;
wb_req <= 1;
end 7: begin // Poll status register - command
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h3C;
wb_req <= 1;
end 8: begin // Poll status register - operand 1/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 9: begin // Poll status register - operand 2/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 10: begin // Poll status register - operand 3/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 11, 12, 13, 14: begin // Read status register 1-4
wb_we <= 1'b0;
wb_adr[7:0] <= 8'h73;
wb_dati[7:0] <= 8'h3C;
wb_req <= 1;
end 15: begin // Close frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 16: begin // Open frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h80;
wb_req <= 1;
end 17: begin // Set UFM address - command
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'hB4;
wb_req <= 1;
end 18: begin // Set UFM address - operand 1/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 19: begin // Set UFM address - operand 2/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 20: begin // Set UFM address - operand 3/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 21: begin // Set UFM address - data 1/4
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h40;
wb_req <= 1;
end 22: begin // Set UFM address - data 2/4
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 23: begin // Set UFM address - data 3/4
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 24: begin // Set UFM address - data 4/4
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 190;
wb_req <= 1;
end 25: begin // Close frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 26: begin // Open frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h80;
wb_req <= 1;
end 27: begin // Read UFM page - command
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'hCA;
wb_req <= 1;
end 28: begin // Read UFM page - operand 1/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h10;
wb_req <= 1;
end 29: begin // Read UFM page - operand 2/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 30: begin // Read UFM page - operand 3/3
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h01;
wb_req <= 1;
end 31: begin // Read UFM page - data 0
wb_we <= 1'b0;
wb_adr[7:0] <= 8'h73;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
if (wb_ack) RWMask[7:0] <= wb_dato[7:0];
end 32: begin // Read UFM page - data 1
wb_we <= 1'b0;
wb_adr[7:0] <= 8'h73;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
if (wb_ack) LEDEN <= wb_dato[0];
end 33, 34,
35, 36, 37, 38,
39, 40, 41, 42,
43, 44, 45, 46: begin // Read UFM page - data 2-15
wb_we <= 1'b0;
wb_adr[7:0] <= 8'h73;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 47: begin // Close frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 48: begin // Open frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h80;
wb_req <= 1;
end 49: begin // Disable config interface - command
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h26;
wb_req <= 1;
end 50: begin // Disable config interface - operand 1/2
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 51: begin // Disable config interface - operand 2/2
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 52: begin // Close frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end 53: begin // Open frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h80;
wb_req <= 1;
end 54: begin // Bypass - command
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h71;
wb_dati[7:0] <= 8'hFF;
wb_req <= 1;
end 55: begin // Close frame
wb_we <= 1'b1;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h00;
wb_req <= 1;
end default: begin
wb_we <= 1'b0;
wb_adr[7:0] <= 8'h70;
wb_dati[7:0] <= 8'h00;
wb_req <= 0;
end
endcase
end else begin
wb_rst <= 1'b0;
wb_cyc_stb <= 1'b0;
wb_req <= 1'b0;
wb_we <= 1'b0;
wb_adr[7:0] <= 8'h00;
wb_dati[7:0] <= 8'h00;
end
end else begin
// UFM bitbang control
wb_rst <= 1'b0;
wb_req <= 1'b0;
// Volatile settings command execution
if (RWSel && S==4'hC) begin
// LED control
if (CmdLEDSet) LEDEN <= D[0];
// Set capacity mask
if (CmdRWMaskSet) RWMask[7:0] <= {D[7], ~D[6:0]};
end
// EFB commands
if (RWSel && S==4'hC) begin
// Set EFB address
if (CmdBitbangMXO2) begin
wb_adr[7:0] <= D[7:0];
wb_dati[7:0] <= wb_adr[7:0];
end
// Excecute EFB R/W cycle
if (CmdExecMXO2) begin
wb_we <= D[0];
wb_cyc_stb <= 1;
end else if (wb_ack) wb_cyc_stb <= 0;
end
end
end
endmodule