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[/] [z80control/] [trunk/] [CII_Starter_USB_API_v1/] [HW/] [I2C_AV_Config.v] - Blame information for rev 12

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1 12 tylerapohl 
//Legal Notice: (C)2006 Altera Corporation. All rights reserved. Your
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//use of Altera Corporation's design tools, logic functions and other
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//software and tools, and its AMPP partner logic functions, and any
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//output files any of the foregoing (including device programming or
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//simulation files), and any associated documentation or information are
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//expressly subject to the terms and conditions of the Altera Program
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//License Subscription Agreement or other applicable license agreement,
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//including, without limitation, that your use is for the sole purpose
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//of programming logic devices manufactured by Altera and sold by Altera
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//or its authorized distributors.  Please refer to the applicable
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//agreement for further details.
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module I2C_AV_Config (  //      Host Side
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                                                iCLK,
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                                                iRST_N,
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                                                //      I2C Side
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                                                I2C_SCLK,
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                                                I2C_SDAT        );
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//      Host Side
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input           iCLK;
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input           iRST_N;
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//      I2C Side
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output          I2C_SCLK;
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inout           I2C_SDAT;
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//      Internal Registers/Wires
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reg     [15:0]   mI2C_CLK_DIV;
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reg     [23:0]   mI2C_DATA;
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reg                     mI2C_CTRL_CLK;
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reg                     mI2C_GO;
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wire            mI2C_END;
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wire            mI2C_ACK;
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reg     [15:0]   LUT_DATA;
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reg     [3:0]    LUT_INDEX;
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reg     [1:0]    mSetup_ST;
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//      Clock Setting
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parameter       CLK_Freq        =       50000000;       //      50      MHz
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parameter       I2C_Freq        =       20000;          //      20      KHz
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//      LUT Data Number
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parameter       LUT_SIZE        =       11;
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//      Audio Data Index
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parameter       Dummy_DATA      =       0;
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parameter       SET_LIN_L       =       1;
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parameter       SET_LIN_R       =       2;
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parameter       SET_HEAD_L      =       3;
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parameter       SET_HEAD_R      =       4;
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parameter       A_PATH_CTRL     =       5;
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parameter       D_PATH_CTRL     =       6;
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parameter       POWER_ON        =       7;
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parameter       SET_FORMAT      =       8;
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parameter       SAMPLE_CTRL     =       9;
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parameter       SET_ACTIVE      =       10;
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/////////////////////   I2C Control Clock       ////////////////////////
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always@(posedge iCLK or negedge iRST_N)
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begin
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        if(!iRST_N)
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        begin
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                mI2C_CTRL_CLK   <=      0;
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                mI2C_CLK_DIV    <=      0;
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        end
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        else
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        begin
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                if( mI2C_CLK_DIV        < (CLK_Freq/I2C_Freq) )
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                mI2C_CLK_DIV    <=      mI2C_CLK_DIV+1;
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                else
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                begin
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                        mI2C_CLK_DIV    <=      0;
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                        mI2C_CTRL_CLK   <=      ~mI2C_CTRL_CLK;
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                end
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        end
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end
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////////////////////////////////////////////////////////////////////
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I2C_Controller  u0      (       .CLOCK(mI2C_CTRL_CLK),          //      Controller Work Clock
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                                                .I2C_SCLK(I2C_SCLK),            //      I2C CLOCK
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                                                .I2C_SDAT(I2C_SDAT),            //      I2C DATA
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                                                .I2C_DATA(mI2C_DATA),           //      DATA:[SLAVE_ADDR,SUB_ADDR,DATA]
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                                                .GO(mI2C_GO),                           //      GO transfor
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                                                .END(mI2C_END),                         //      END transfor
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                                                .ACK(mI2C_ACK),                         //      ACK
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                                                .RESET(iRST_N)  );
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////////////////////////////////////////////////////////////////////
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//////////////////////  Config Control  ////////////////////////////
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always@(posedge mI2C_CTRL_CLK or negedge iRST_N)
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begin
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        if(!iRST_N)
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        begin
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                LUT_INDEX       <=      0;
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                mSetup_ST       <=      0;
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                mI2C_GO         <=      0;
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        end
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        else
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        begin
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                if(LUT_INDEX<LUT_SIZE)
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                begin
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                        case(mSetup_ST)
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                        0:       begin
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                                        mI2C_DATA       <=      {8'h34,LUT_DATA};
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                                        mI2C_GO         <=      1;
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                                        mSetup_ST       <=      1;
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                                end
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                        1:      begin
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                                        if(mI2C_END)
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                                        begin
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                                                if(!mI2C_ACK)
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                                                mSetup_ST       <=      2;
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                                                else
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                                                mSetup_ST       <=      0;
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                                                mI2C_GO         <=      0;
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                                        end
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                                end
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                        2:      begin
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                                        LUT_INDEX       <=      LUT_INDEX+1;
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                                        mSetup_ST       <=      0;
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                                end
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                        endcase
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                end
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        end
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end
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////////////////////////////////////////////////////////////////////
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/////////////////////   Config Data LUT   //////////////////////////
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always
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begin
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        case(LUT_INDEX)
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        //      Audio Config Data
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        Dummy_DATA      :       LUT_DATA        <=      16'h0000;
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        SET_LIN_L       :       LUT_DATA        <=      16'h001A;
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        SET_LIN_R       :       LUT_DATA        <=      16'h021A;
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        SET_HEAD_L      :       LUT_DATA        <=      16'h047B;
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        SET_HEAD_R      :       LUT_DATA        <=      16'h067B;
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        A_PATH_CTRL     :       LUT_DATA        <=      16'h08F8;
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        D_PATH_CTRL     :       LUT_DATA        <=      16'h0A06;
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        POWER_ON        :       LUT_DATA        <=      16'h0C00;
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        SET_FORMAT      :       LUT_DATA        <=      16'h0E01;
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        SAMPLE_CTRL     :       LUT_DATA        <=      16'h1002;
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        SET_ACTIVE      :       LUT_DATA        <=      16'h1201;
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        default         :       LUT_DATA        <=      16'h0000;
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        endcase
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end
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////////////////////////////////////////////////////////////////////
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endmodule

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