URL
https://opencores.org/ocsvn/openmsp430/openmsp430/trunk
Subversion Repositories openmsp430
[/] [openmsp430/] [trunk/] [fpga/] [actel_m1a3pl_dev_kit/] [rtl/] [verilog/] [openmsp430/] [periph/] [omsp_timerA.v] - Rev 218
Go to most recent revision | Compare with Previous | Blame | View Log
//---------------------------------------------------------------------------- // Copyright (C) 2009 , Olivier Girard // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions // are met: // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above copyright // notice, this list of conditions and the following disclaimer in the // documentation and/or other materials provided with the distribution. // * Neither the name of the authors nor the names of its contributors // may be used to endorse or promote products derived from this software // without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, // OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF // THE POSSIBILITY OF SUCH DAMAGE // //---------------------------------------------------------------------------- // // *File Name: omsp_timerA.v // // *Module Description: // Timer A top-level // // *Author(s): // - Olivier Girard, olgirard@gmail.com // //---------------------------------------------------------------------------- // $Rev$ // $LastChangedBy$ // $LastChangedDate$ //---------------------------------------------------------------------------- `ifdef OMSP_TA_NO_INCLUDE `else `include "omsp_timerA_defines.v" `endif module omsp_timerA ( // OUTPUTs irq_ta0, // Timer A interrupt: TACCR0 irq_ta1, // Timer A interrupt: TAIV, TACCR1, TACCR2 per_dout, // Peripheral data output ta_out0, // Timer A output 0 ta_out0_en, // Timer A output 0 enable ta_out1, // Timer A output 1 ta_out1_en, // Timer A output 1 enable ta_out2, // Timer A output 2 ta_out2_en, // Timer A output 2 enable // INPUTs aclk_en, // ACLK enable (from CPU) dbg_freeze, // Freeze Timer A counter inclk, // INCLK external timer clock (SLOW) irq_ta0_acc, // Interrupt request TACCR0 accepted mclk, // Main system clock per_addr, // Peripheral address per_din, // Peripheral data input per_en, // Peripheral enable (high active) per_we, // Peripheral write enable (high active) puc_rst, // Main system reset smclk_en, // SMCLK enable (from CPU) ta_cci0a, // Timer A capture 0 input A ta_cci0b, // Timer A capture 0 input B ta_cci1a, // Timer A capture 1 input A ta_cci1b, // Timer A capture 1 input B ta_cci2a, // Timer A capture 2 input A ta_cci2b, // Timer A capture 2 input B taclk // TACLK external timer clock (SLOW) ); // OUTPUTs //========= output irq_ta0; // Timer A interrupt: TACCR0 output irq_ta1; // Timer A interrupt: TAIV, TACCR1, TACCR2 output [15:0] per_dout; // Peripheral data output output ta_out0; // Timer A output 0 output ta_out0_en; // Timer A output 0 enable output ta_out1; // Timer A output 1 output ta_out1_en; // Timer A output 1 enable output ta_out2; // Timer A output 2 output ta_out2_en; // Timer A output 2 enable // INPUTs //========= input aclk_en; // ACLK enable (from CPU) input dbg_freeze; // Freeze Timer A counter input inclk; // INCLK external timer clock (SLOW) input irq_ta0_acc; // Interrupt request TACCR0 accepted input mclk; // Main system clock input [13:0] per_addr; // Peripheral address input [15:0] per_din; // Peripheral data input input per_en; // Peripheral enable (high active) input [1:0] per_we; // Peripheral write enable (high active) input puc_rst; // Main system reset input smclk_en; // SMCLK enable (from CPU) input ta_cci0a; // Timer A capture 0 input A input ta_cci0b; // Timer A capture 0 input B input ta_cci1a; // Timer A capture 1 input A input ta_cci1b; // Timer A capture 1 input B input ta_cci2a; // Timer A capture 2 input A input ta_cci2b; // Timer A capture 2 input B input taclk; // TACLK external timer clock (SLOW) //============================================================================= // 1) PARAMETER DECLARATION //============================================================================= // Register base address (must be aligned to decoder bit width) parameter [14:0] BASE_ADDR = 15'h0100; // Decoder bit width (defines how many bits are considered for address decoding) parameter DEC_WD = 7; // Register addresses offset parameter [DEC_WD-1:0] TACTL = 'h60, TAR = 'h70, TACCTL0 = 'h62, TACCR0 = 'h72, TACCTL1 = 'h64, TACCR1 = 'h74, TACCTL2 = 'h66, TACCR2 = 'h76, TAIV = 'h2E; // Register one-hot decoder utilities parameter DEC_SZ = (1 << DEC_WD); parameter [DEC_SZ-1:0] BASE_REG = {{DEC_SZ-1{1'b0}}, 1'b1}; // Register one-hot decoder parameter [DEC_SZ-1:0] TACTL_D = (BASE_REG << TACTL), TAR_D = (BASE_REG << TAR), TACCTL0_D = (BASE_REG << TACCTL0), TACCR0_D = (BASE_REG << TACCR0), TACCTL1_D = (BASE_REG << TACCTL1), TACCR1_D = (BASE_REG << TACCR1), TACCTL2_D = (BASE_REG << TACCTL2), TACCR2_D = (BASE_REG << TACCR2), TAIV_D = (BASE_REG << TAIV); //============================================================================ // 2) REGISTER DECODER //============================================================================ // Local register selection wire reg_sel = per_en & (per_addr[13:DEC_WD-1]==BASE_ADDR[14:DEC_WD]); // Register local address wire [DEC_WD-1:0] reg_addr = {per_addr[DEC_WD-2:0], 1'b0}; // Register address decode wire [DEC_SZ-1:0] reg_dec = (TACTL_D & {DEC_SZ{(reg_addr == TACTL )}}) | (TAR_D & {DEC_SZ{(reg_addr == TAR )}}) | (TACCTL0_D & {DEC_SZ{(reg_addr == TACCTL0 )}}) | (TACCR0_D & {DEC_SZ{(reg_addr == TACCR0 )}}) | (TACCTL1_D & {DEC_SZ{(reg_addr == TACCTL1 )}}) | (TACCR1_D & {DEC_SZ{(reg_addr == TACCR1 )}}) | (TACCTL2_D & {DEC_SZ{(reg_addr == TACCTL2 )}}) | (TACCR2_D & {DEC_SZ{(reg_addr == TACCR2 )}}) | (TAIV_D & {DEC_SZ{(reg_addr == TAIV )}}); // Read/Write probes wire reg_write = |per_we & reg_sel; wire reg_read = ~|per_we & reg_sel; // Read/Write vectors wire [DEC_SZ-1:0] reg_wr = reg_dec & {512{reg_write}}; wire [DEC_SZ-1:0] reg_rd = reg_dec & {512{reg_read}}; //============================================================================ // 3) REGISTERS //============================================================================ // TACTL Register //----------------- reg [9:0] tactl; wire tactl_wr = reg_wr[TACTL]; wire taclr = tactl_wr & per_din[`TACLR]; wire taifg_set; wire taifg_clr; always @ (posedge mclk or posedge puc_rst) if (puc_rst) tactl <= 10'h000; else if (tactl_wr) tactl <= ((per_din[9:0] & 10'h3f3) | {9'h000, taifg_set}) & {9'h1ff, ~taifg_clr}; else tactl <= (tactl | {9'h000, taifg_set}) & {9'h1ff, ~taifg_clr}; // TAR Register //----------------- reg [15:0] tar; wire tar_wr = reg_wr[TAR]; wire tar_clk; wire tar_clr; wire tar_inc; wire tar_dec; wire [15:0] tar_add = tar_inc ? 16'h0001 : tar_dec ? 16'hffff : 16'h0000; wire [15:0] tar_nxt = tar_clr ? 16'h0000 : (tar+tar_add); always @ (posedge mclk or posedge puc_rst) if (puc_rst) tar <= 16'h0000; else if (tar_wr) tar <= per_din; else if (taclr) tar <= 16'h0000; else if (tar_clk & ~dbg_freeze) tar <= tar_nxt; // TACCTL0 Register //------------------ reg [15:0] tacctl0; wire tacctl0_wr = reg_wr[TACCTL0]; wire ccifg0_set; wire cov0_set; always @ (posedge mclk or posedge puc_rst) if (puc_rst) tacctl0 <= 16'h0000; else if (tacctl0_wr) tacctl0 <= ((per_din & 16'hf9f7) | {14'h0000, cov0_set, ccifg0_set}) & {15'h7fff, ~irq_ta0_acc}; else tacctl0 <= (tacctl0 | {14'h0000, cov0_set, ccifg0_set}) & {15'h7fff, ~irq_ta0_acc}; wire cci0; wire cci0_s; reg scci0; wire [15:0] tacctl0_full = tacctl0 | {5'h00, scci0, 6'h00, cci0_s, 3'h0}; // TACCR0 Register //------------------ reg [15:0] taccr0; wire taccr0_wr = reg_wr[TACCR0]; wire cci0_cap; always @ (posedge mclk or posedge puc_rst) if (puc_rst) taccr0 <= 16'h0000; else if (taccr0_wr) taccr0 <= per_din; else if (cci0_cap) taccr0 <= tar; // TACCTL1 Register //------------------ reg [15:0] tacctl1; wire tacctl1_wr = reg_wr[TACCTL1]; wire ccifg1_set; wire ccifg1_clr; wire cov1_set; always @ (posedge mclk or posedge puc_rst) if (puc_rst) tacctl1 <= 16'h0000; else if (tacctl1_wr) tacctl1 <= ((per_din & 16'hf9f7) | {14'h0000, cov1_set, ccifg1_set}) & {15'h7fff, ~ccifg1_clr}; else tacctl1 <= (tacctl1 | {14'h0000, cov1_set, ccifg1_set}) & {15'h7fff, ~ccifg1_clr}; wire cci1; wire cci1_s; reg scci1; wire [15:0] tacctl1_full = tacctl1 | {5'h00, scci1, 6'h00, cci1_s, 3'h0}; // TACCR1 Register //------------------ reg [15:0] taccr1; wire taccr1_wr = reg_wr[TACCR1]; wire cci1_cap; always @ (posedge mclk or posedge puc_rst) if (puc_rst) taccr1 <= 16'h0000; else if (taccr1_wr) taccr1 <= per_din; else if (cci1_cap) taccr1 <= tar; // TACCTL2 Register //------------------ reg [15:0] tacctl2; wire tacctl2_wr = reg_wr[TACCTL2]; wire ccifg2_set; wire ccifg2_clr; wire cov2_set; always @ (posedge mclk or posedge puc_rst) if (puc_rst) tacctl2 <= 16'h0000; else if (tacctl2_wr) tacctl2 <= ((per_din & 16'hf9f7) | {14'h0000, cov2_set, ccifg2_set}) & {15'h7fff, ~ccifg2_clr}; else tacctl2 <= (tacctl2 | {14'h0000, cov2_set, ccifg2_set}) & {15'h7fff, ~ccifg2_clr}; wire cci2; wire cci2_s; reg scci2; wire [15:0] tacctl2_full = tacctl2 | {5'h00, scci2, 6'h00, cci2_s, 3'h0}; // TACCR2 Register //------------------ reg [15:0] taccr2; wire taccr2_wr = reg_wr[TACCR2]; wire cci2_cap; always @ (posedge mclk or posedge puc_rst) if (puc_rst) taccr2 <= 16'h0000; else if (taccr2_wr) taccr2 <= per_din; else if (cci2_cap) taccr2 <= tar; // TAIV Register //------------------ wire [3:0] taiv = (tacctl1[`TACCIFG] & tacctl1[`TACCIE]) ? 4'h2 : (tacctl2[`TACCIFG] & tacctl2[`TACCIE]) ? 4'h4 : (tactl[`TAIFG] & tactl[`TAIE]) ? 4'hA : 4'h0; assign ccifg1_clr = (reg_rd[TAIV] | reg_wr[TAIV]) & (taiv==4'h2); assign ccifg2_clr = (reg_rd[TAIV] | reg_wr[TAIV]) & (taiv==4'h4); assign taifg_clr = (reg_rd[TAIV] | reg_wr[TAIV]) & (taiv==4'hA); //============================================================================ // 4) DATA OUTPUT GENERATION //============================================================================ // Data output mux wire [15:0] tactl_rd = {6'h00, tactl} & {16{reg_rd[TACTL]}}; wire [15:0] tar_rd = tar & {16{reg_rd[TAR]}}; wire [15:0] tacctl0_rd = tacctl0_full & {16{reg_rd[TACCTL0]}}; wire [15:0] taccr0_rd = taccr0 & {16{reg_rd[TACCR0]}}; wire [15:0] tacctl1_rd = tacctl1_full & {16{reg_rd[TACCTL1]}}; wire [15:0] taccr1_rd = taccr1 & {16{reg_rd[TACCR1]}}; wire [15:0] tacctl2_rd = tacctl2_full & {16{reg_rd[TACCTL2]}}; wire [15:0] taccr2_rd = taccr2 & {16{reg_rd[TACCR2]}}; wire [15:0] taiv_rd = {12'h000, taiv} & {16{reg_rd[TAIV]}}; wire [15:0] per_dout = tactl_rd | tar_rd | tacctl0_rd | taccr0_rd | tacctl1_rd | taccr1_rd | tacctl2_rd | taccr2_rd | taiv_rd; //============================================================================ // 5) Timer A counter control //============================================================================ // Clock input synchronization (TACLK & INCLK) //----------------------------------------------------------- wire taclk_s; wire inclk_s; omsp_sync_cell sync_cell_taclk ( .data_out (taclk_s), .data_in (taclk), .clk (mclk), .rst (puc_rst) ); omsp_sync_cell sync_cell_inclk ( .data_out (inclk_s), .data_in (inclk), .clk (mclk), .rst (puc_rst) ); // Clock edge detection (TACLK & INCLK) //----------------------------------------------------------- reg taclk_dly; always @ (posedge mclk or posedge puc_rst) if (puc_rst) taclk_dly <= 1'b0; else taclk_dly <= taclk_s; wire taclk_en = taclk_s & ~taclk_dly; reg inclk_dly; always @ (posedge mclk or posedge puc_rst) if (puc_rst) inclk_dly <= 1'b0; else inclk_dly <= inclk_s; wire inclk_en = inclk_s & ~inclk_dly; // Timer clock input mux //----------------------------------------------------------- wire sel_clk = (tactl[`TASSELx]==2'b00) ? taclk_en : (tactl[`TASSELx]==2'b01) ? aclk_en : (tactl[`TASSELx]==2'b10) ? smclk_en : inclk_en; // Generate update pluse for the counter (<=> divided clock) //----------------------------------------------------------- reg [2:0] clk_div; assign tar_clk = sel_clk & ((tactl[`TAIDx]==2'b00) ? 1'b1 : (tactl[`TAIDx]==2'b01) ? clk_div[0] : (tactl[`TAIDx]==2'b10) ? &clk_div[1:0] : &clk_div[2:0]); always @ (posedge mclk or posedge puc_rst) if (puc_rst) clk_div <= 3'h0; else if (tar_clk | taclr) clk_div <= 3'h0; else if ((tactl[`TAMCx]!=2'b00) & sel_clk) clk_div <= clk_div+3'h1; // Time counter control signals //----------------------------------------------------------- assign tar_clr = ((tactl[`TAMCx]==2'b01) & (tar>=taccr0)) | ((tactl[`TAMCx]==2'b11) & (taccr0==16'h0000)); assign tar_inc = (tactl[`TAMCx]==2'b01) | (tactl[`TAMCx]==2'b10) | ((tactl[`TAMCx]==2'b11) & ~tar_dec); reg tar_dir; always @ (posedge mclk or posedge puc_rst) if (puc_rst) tar_dir <= 1'b0; else if (taclr) tar_dir <= 1'b0; else if (tactl[`TAMCx]==2'b11) begin if (tar_clk & (tar==16'h0001)) tar_dir <= 1'b0; else if (tar>=taccr0) tar_dir <= 1'b1; end else tar_dir <= 1'b0; assign tar_dec = tar_dir | ((tactl[`TAMCx]==2'b11) & (tar>=taccr0)); //============================================================================ // 6) Timer A comparator //============================================================================ wire equ0 = (tar_nxt==taccr0) & (tar!=taccr0); wire equ1 = (tar_nxt==taccr1) & (tar!=taccr1); wire equ2 = (tar_nxt==taccr2) & (tar!=taccr2); //============================================================================ // 7) Timer A capture logic //============================================================================ // Input selection //------------------ assign cci0 = (tacctl0[`TACCISx]==2'b00) ? ta_cci0a : (tacctl0[`TACCISx]==2'b01) ? ta_cci0b : (tacctl0[`TACCISx]==2'b10) ? 1'b0 : 1'b1; assign cci1 = (tacctl1[`TACCISx]==2'b00) ? ta_cci1a : (tacctl1[`TACCISx]==2'b01) ? ta_cci1b : (tacctl1[`TACCISx]==2'b10) ? 1'b0 : 1'b1; assign cci2 = (tacctl2[`TACCISx]==2'b00) ? ta_cci2a : (tacctl2[`TACCISx]==2'b01) ? ta_cci2b : (tacctl2[`TACCISx]==2'b10) ? 1'b0 : 1'b1; // CCIx synchronization omsp_sync_cell sync_cell_cci0 ( .data_out (cci0_s), .data_in (cci0), .clk (mclk), .rst (puc_rst) ); omsp_sync_cell sync_cell_cci1 ( .data_out (cci1_s), .data_in (cci1), .clk (mclk), .rst (puc_rst) ); omsp_sync_cell sync_cell_cci2 ( .data_out (cci2_s), .data_in (cci2), .clk (mclk), .rst (puc_rst) ); // Register CCIx for edge detection reg cci0_dly; reg cci1_dly; reg cci2_dly; always @ (posedge mclk or posedge puc_rst) if (puc_rst) begin cci0_dly <= 1'b0; cci1_dly <= 1'b0; cci2_dly <= 1'b0; end else begin cci0_dly <= cci0_s; cci1_dly <= cci1_s; cci2_dly <= cci2_s; end // Generate SCCIx //------------------ always @ (posedge mclk or posedge puc_rst) if (puc_rst) scci0 <= 1'b0; else if (tar_clk & equ0) scci0 <= cci0_s; always @ (posedge mclk or posedge puc_rst) if (puc_rst) scci1 <= 1'b0; else if (tar_clk & equ1) scci1 <= cci1_s; always @ (posedge mclk or posedge puc_rst) if (puc_rst) scci2 <= 1'b0; else if (tar_clk & equ2) scci2 <= cci2_s; // Capture mode //------------------ wire cci0_evt = (tacctl0[`TACMx]==2'b00) ? 1'b0 : (tacctl0[`TACMx]==2'b01) ? ( cci0_s & ~cci0_dly) : // Rising edge (tacctl0[`TACMx]==2'b10) ? (~cci0_s & cci0_dly) : // Falling edge ( cci0_s ^ cci0_dly); // Both edges wire cci1_evt = (tacctl1[`TACMx]==2'b00) ? 1'b0 : (tacctl1[`TACMx]==2'b01) ? ( cci1_s & ~cci1_dly) : // Rising edge (tacctl1[`TACMx]==2'b10) ? (~cci1_s & cci1_dly) : // Falling edge ( cci1_s ^ cci1_dly); // Both edges wire cci2_evt = (tacctl2[`TACMx]==2'b00) ? 1'b0 : (tacctl2[`TACMx]==2'b01) ? ( cci2_s & ~cci2_dly) : // Rising edge (tacctl2[`TACMx]==2'b10) ? (~cci2_s & cci2_dly) : // Falling edge ( cci2_s ^ cci2_dly); // Both edges // Event Synchronization //----------------------- reg cci0_evt_s; always @ (posedge mclk or posedge puc_rst) if (puc_rst) cci0_evt_s <= 1'b0; else if (tar_clk) cci0_evt_s <= 1'b0; else if (cci0_evt) cci0_evt_s <= 1'b1; reg cci1_evt_s; always @ (posedge mclk or posedge puc_rst) if (puc_rst) cci1_evt_s <= 1'b0; else if (tar_clk) cci1_evt_s <= 1'b0; else if (cci1_evt) cci1_evt_s <= 1'b1; reg cci2_evt_s; always @ (posedge mclk or posedge puc_rst) if (puc_rst) cci2_evt_s <= 1'b0; else if (tar_clk) cci2_evt_s <= 1'b0; else if (cci2_evt) cci2_evt_s <= 1'b1; reg cci0_sync; always @ (posedge mclk or posedge puc_rst) if (puc_rst) cci0_sync <= 1'b0; else cci0_sync <= (tar_clk & cci0_evt_s) | (tar_clk & cci0_evt & ~cci0_evt_s); reg cci1_sync; always @ (posedge mclk or posedge puc_rst) if (puc_rst) cci1_sync <= 1'b0; else cci1_sync <= (tar_clk & cci1_evt_s) | (tar_clk & cci1_evt & ~cci1_evt_s); reg cci2_sync; always @ (posedge mclk or posedge puc_rst) if (puc_rst) cci2_sync <= 1'b0; else cci2_sync <= (tar_clk & cci2_evt_s) | (tar_clk & cci2_evt & ~cci2_evt_s); // Generate final capture command //----------------------------------- assign cci0_cap = tacctl0[`TASCS] ? cci0_sync : cci0_evt; assign cci1_cap = tacctl1[`TASCS] ? cci1_sync : cci1_evt; assign cci2_cap = tacctl2[`TASCS] ? cci2_sync : cci2_evt; // Generate capture overflow flag //----------------------------------- reg cap0_taken; wire cap0_taken_clr = reg_rd[TACCR0] | (tacctl0_wr & tacctl0[`TACOV] & ~per_din[`TACOV]); always @ (posedge mclk or posedge puc_rst) if (puc_rst) cap0_taken <= 1'b0; else if (cci0_cap) cap0_taken <= 1'b1; else if (cap0_taken_clr) cap0_taken <= 1'b0; reg cap1_taken; wire cap1_taken_clr = reg_rd[TACCR1] | (tacctl1_wr & tacctl1[`TACOV] & ~per_din[`TACOV]); always @ (posedge mclk or posedge puc_rst) if (puc_rst) cap1_taken <= 1'b0; else if (cci1_cap) cap1_taken <= 1'b1; else if (cap1_taken_clr) cap1_taken <= 1'b0; reg cap2_taken; wire cap2_taken_clr = reg_rd[TACCR2] | (tacctl2_wr & tacctl2[`TACOV] & ~per_din[`TACOV]); always @ (posedge mclk or posedge puc_rst) if (puc_rst) cap2_taken <= 1'b0; else if (cci2_cap) cap2_taken <= 1'b1; else if (cap2_taken_clr) cap2_taken <= 1'b0; assign cov0_set = cap0_taken & cci0_cap & ~reg_rd[TACCR0]; assign cov1_set = cap1_taken & cci1_cap & ~reg_rd[TACCR1]; assign cov2_set = cap2_taken & cci2_cap & ~reg_rd[TACCR2]; //============================================================================ // 8) Timer A output unit //============================================================================ // Output unit 0 //------------------- reg ta_out0; wire ta_out0_mode0 = tacctl0[`TAOUT]; // Output wire ta_out0_mode1 = equ0 ? 1'b1 : ta_out0; // Set wire ta_out0_mode2 = equ0 ? ~ta_out0 : // Toggle/Reset equ0 ? 1'b0 : ta_out0; wire ta_out0_mode3 = equ0 ? 1'b1 : // Set/Reset equ0 ? 1'b0 : ta_out0; wire ta_out0_mode4 = equ0 ? ~ta_out0 : ta_out0; // Toggle wire ta_out0_mode5 = equ0 ? 1'b0 : ta_out0; // Reset wire ta_out0_mode6 = equ0 ? ~ta_out0 : // Toggle/Set equ0 ? 1'b1 : ta_out0; wire ta_out0_mode7 = equ0 ? 1'b0 : // Reset/Set equ0 ? 1'b1 : ta_out0; wire ta_out0_nxt = (tacctl0[`TAOUTMODx]==3'b000) ? ta_out0_mode0 : (tacctl0[`TAOUTMODx]==3'b001) ? ta_out0_mode1 : (tacctl0[`TAOUTMODx]==3'b010) ? ta_out0_mode2 : (tacctl0[`TAOUTMODx]==3'b011) ? ta_out0_mode3 : (tacctl0[`TAOUTMODx]==3'b100) ? ta_out0_mode4 : (tacctl0[`TAOUTMODx]==3'b101) ? ta_out0_mode5 : (tacctl0[`TAOUTMODx]==3'b110) ? ta_out0_mode6 : ta_out0_mode7; always @ (posedge mclk or posedge puc_rst) if (puc_rst) ta_out0 <= 1'b0; else if ((tacctl0[`TAOUTMODx]==3'b001) & taclr) ta_out0 <= 1'b0; else if (tar_clk) ta_out0 <= ta_out0_nxt; assign ta_out0_en = ~tacctl0[`TACAP]; // Output unit 1 //------------------- reg ta_out1; wire ta_out1_mode0 = tacctl1[`TAOUT]; // Output wire ta_out1_mode1 = equ1 ? 1'b1 : ta_out1; // Set wire ta_out1_mode2 = equ1 ? ~ta_out1 : // Toggle/Reset equ0 ? 1'b0 : ta_out1; wire ta_out1_mode3 = equ1 ? 1'b1 : // Set/Reset equ0 ? 1'b0 : ta_out1; wire ta_out1_mode4 = equ1 ? ~ta_out1 : ta_out1; // Toggle wire ta_out1_mode5 = equ1 ? 1'b0 : ta_out1; // Reset wire ta_out1_mode6 = equ1 ? ~ta_out1 : // Toggle/Set equ0 ? 1'b1 : ta_out1; wire ta_out1_mode7 = equ1 ? 1'b0 : // Reset/Set equ0 ? 1'b1 : ta_out1; wire ta_out1_nxt = (tacctl1[`TAOUTMODx]==3'b000) ? ta_out1_mode0 : (tacctl1[`TAOUTMODx]==3'b001) ? ta_out1_mode1 : (tacctl1[`TAOUTMODx]==3'b010) ? ta_out1_mode2 : (tacctl1[`TAOUTMODx]==3'b011) ? ta_out1_mode3 : (tacctl1[`TAOUTMODx]==3'b100) ? ta_out1_mode4 : (tacctl1[`TAOUTMODx]==3'b101) ? ta_out1_mode5 : (tacctl1[`TAOUTMODx]==3'b110) ? ta_out1_mode6 : ta_out1_mode7; always @ (posedge mclk or posedge puc_rst) if (puc_rst) ta_out1 <= 1'b0; else if ((tacctl1[`TAOUTMODx]==3'b001) & taclr) ta_out1 <= 1'b0; else if (tar_clk) ta_out1 <= ta_out1_nxt; assign ta_out1_en = ~tacctl1[`TACAP]; // Output unit 2 //------------------- reg ta_out2; wire ta_out2_mode0 = tacctl2[`TAOUT]; // Output wire ta_out2_mode1 = equ2 ? 1'b1 : ta_out2; // Set wire ta_out2_mode2 = equ2 ? ~ta_out2 : // Toggle/Reset equ0 ? 1'b0 : ta_out2; wire ta_out2_mode3 = equ2 ? 1'b1 : // Set/Reset equ0 ? 1'b0 : ta_out2; wire ta_out2_mode4 = equ2 ? ~ta_out2 : ta_out2; // Toggle wire ta_out2_mode5 = equ2 ? 1'b0 : ta_out2; // Reset wire ta_out2_mode6 = equ2 ? ~ta_out2 : // Toggle/Set equ0 ? 1'b1 : ta_out2; wire ta_out2_mode7 = equ2 ? 1'b0 : // Reset/Set equ0 ? 1'b1 : ta_out2; wire ta_out2_nxt = (tacctl2[`TAOUTMODx]==3'b000) ? ta_out2_mode0 : (tacctl2[`TAOUTMODx]==3'b001) ? ta_out2_mode1 : (tacctl2[`TAOUTMODx]==3'b010) ? ta_out2_mode2 : (tacctl2[`TAOUTMODx]==3'b011) ? ta_out2_mode3 : (tacctl2[`TAOUTMODx]==3'b100) ? ta_out2_mode4 : (tacctl2[`TAOUTMODx]==3'b101) ? ta_out2_mode5 : (tacctl2[`TAOUTMODx]==3'b110) ? ta_out2_mode6 : ta_out2_mode7; always @ (posedge mclk or posedge puc_rst) if (puc_rst) ta_out2 <= 1'b0; else if ((tacctl2[`TAOUTMODx]==3'b001) & taclr) ta_out2 <= 1'b0; else if (tar_clk) ta_out2 <= ta_out2_nxt; assign ta_out2_en = ~tacctl2[`TACAP]; //============================================================================ // 9) Timer A interrupt generation //============================================================================ assign taifg_set = tar_clk & (((tactl[`TAMCx]==2'b01) & (tar==taccr0)) | ((tactl[`TAMCx]==2'b10) & (tar==16'hffff)) | ((tactl[`TAMCx]==2'b11) & (tar_nxt==16'h0000) & tar_dec)); assign ccifg0_set = tacctl0[`TACAP] ? cci0_cap : (tar_clk & ((tactl[`TAMCx]!=2'b00) & equ0)); assign ccifg1_set = tacctl1[`TACAP] ? cci1_cap : (tar_clk & ((tactl[`TAMCx]!=2'b00) & equ1)); assign ccifg2_set = tacctl2[`TACAP] ? cci2_cap : (tar_clk & ((tactl[`TAMCx]!=2'b00) & equ2)); wire irq_ta0 = (tacctl0[`TACCIFG] & tacctl0[`TACCIE]); wire irq_ta1 = (tactl[`TAIFG] & tactl[`TAIE]) | (tacctl1[`TACCIFG] & tacctl1[`TACCIE]) | (tacctl2[`TACCIFG] & tacctl2[`TACCIE]); endmodule // omsp_timerA `ifdef OMSP_TA_NO_INCLUDE `else `include "omsp_timerA_undefines.v" `endif
Go to most recent revision | Compare with Previous | Blame | View Log