EpSubsystem/SpiSubSystem/SpiLinesMuxer.v

//////////////////////////////////////////////////////////////////////////////////
// Company:         TAIR
// Engineer:        
// 
// Create Date:     10/30/2023 11:24:31 AM
// Design Name:
// Module Name:     SpiLinesMuxer
// Project Name:    S5443_V3_FPGA3
// Target Devices:  BOARD: BY5443v3. FPGA: xc7s25csga225-2
// Tool Versions:
// Description:     This module multiplexing Spi output signals based on an settings.
// 
// Dependencies: 
// 
// Revision:
// Revision 1.0 - File Created
// Additional Comments:
// 
////////////////////////////////////////////////////////////////////////////////////

module SpiLinesMuxer (
    input SsR_i,
    input SsQ_i,
    input SckR_i,
    input SckQ_i,
    input Mosi0R_i,
    input Mosi0Q_i,

    input ChipSelFpga_i,
    input ChipSelFlash_i,
    input Assel_i,
    input SpiMode_i,

    output Ss_o,
    output SsFlash_o,
    output Sck_o,
    output Mosi0_o
);
//================================================================================
//	REG/WIRE
//================================================================================
wire ssMuxed;
wire sckMuxed;
wire mosi0Muxed;

//================================================================================
//  ASSIGNMENTS
//================================================================================
assign sckMuxed = (SpiMode_i) ? SckQ_i : SckR_i;
assign ssMuxed = (SpiMode_i) ? SsQ_i : SsR_i;
assign mosi0Muxed = (SpiMode_i) ? Mosi0Q_i : Mosi0R_i;

assign Ss_o = (Assel_i) ? (ChipSelFpga_i ? ssMuxed : 1'b1) : ChipSelFpga_i;
assign SsFlash_o = (Assel_i) ? (ChipSelFlash_i ? ssMuxed:1'b1) : ChipSelFlash_i;
assign Sck_o = sckMuxed;
assign Mosi0_o = mosi0Muxed;

endmodule