Changeset 63 for trunk/MultiChannelUSB/adc_lvds.v

Timestamp:

Sep 23, 2009, 9:46:50 PM (15 years ago)

Author:

demin

Message:

add parameters for number of channels and channel resolution

File:

• trunk/MultiChannelUSB/adc_lvds.v (modified) (3 diffs)

trunk/MultiChannelUSB/adc_lvds.v

@@ -1 +1 @@
 module adc_lvds
+        #(
+                parameter       size    =       3, // number of channels
+                parameter       width   =       12 // channel resolution
+        )
         (
-                input   wire                    lvds_dco,
-                input   wire                    lvds_fco,
-                input   wire    [2:0]   lvds_d,
+                input   wire                                            lvds_dco,
+                input   wire                                            lvds_fco,
+                input   wire    [2:0]                           lvds_d,
 
-                output  reg             [11:0]  adc_db,
-                output  reg             [11:0]  adc_dc,
-                output  reg             [11:0]  adc_dd
+                output  wire    [size*width-1:0]        adc_data
         );
 
-        wire    [2:0]   int_data_h, int_data_l;
-        reg     [11:0]  int_data_next [2:0];
-        reg     [11:0]  int_data_reg [2:0];
+        wire    [size-1:0]      int_data_h, int_data_l;
+        reg     [width-1:0]     int_data_next [size-1:0];
+        reg     [width-1:0]     int_data_reg [size-1:0];
+
+        reg     [width-1:0]     int_adc_data [size-1:0];
+
+        integer i;
+        genvar j;
 
         altddio_in #(
@@ -18 +25 @@
                 .invert_input_clocks("ON"),
                 .lpm_type("altddio_in"),
-                .width(3)) altddio_in_unit (
+                .width(size)) altddio_in_unit (
                 .datain(lvds_d),
                 .inclock(lvds_dco),
@@ -31 +38 @@
         always @ (posedge lvds_dco)
         begin
-                int_data_reg[0] <= int_data_next[0];
-                int_data_reg[1] <= int_data_next[1];
-                int_data_reg[2] <= int_data_next[2];            
+                for (i = 0; i < size; i = i + 1)
+                begin
+                        int_data_reg[i] <= int_data_next[i];
+                end
         end
 
         always @ (posedge lvds_fco)
         begin
-                adc_db <= int_data_next[0];
-                adc_dc <= int_data_next[1];
-                adc_dd <= int_data_next[2];
+                for (i = 0; i < size; i = i + 1)
+                begin
+                        int_adc_data[i] <= int_data_next[i];
+                end
         end
 
         always @*
         begin
-                int_data_next[0] = {int_data_reg[0][9:0], int_data_l[0], int_data_h[0]};
-                int_data_next[1] = {int_data_reg[1][9:0], int_data_l[1], int_data_h[1]};
-                int_data_next[2] = {int_data_reg[2][9:0], int_data_l[2], int_data_h[2]};
+                for (i = 0; i < size; i = i + 1)
+                begin
+                        int_data_next[i] = {int_data_reg[i][9:0], int_data_l[i], int_data_h[i]};
+                end
         end
 
+        generate
+                for (j = 1; j < size; j = j + 1)
+                begin : ADC_LVDS_OUTPUT
+                        assign adc_data[j*width+width-1:j*width] = int_adc_data[j];
+                end
+        endgenerate
+
 endmodule