Switch audio powerdown signal to input and expose to host via manufacturing debug registers

2 files changed, 3 insertions, 8 deletions

diff --git a/main.v b/main.v
index 54b7875..918e09e 100644
--- a/main.v
+++ b/main.v
@@ -60,7 +60,7 @@ module system_fpga_top
 
 		// Component disable lines
 		input wire ast_video_disable_n,
-		output reg audio_disable,
+		input wire audio_power_down,
 		input wire mode_set_n,
 
 		// System status lines
@@ -561,7 +561,7 @@ module system_fpga_top
 				i2c_data_to_master <= fpga_version;
 			end
 			i2c_system_override_reg_addr: begin
-				i2c_data_to_master <= {7'b0000000, atx_force_enable};
+				i2c_data_to_master <= {audio_power_down, 6'b000000, atx_force_enable};
 			end
 			default: begin
 				i2c_data_to_master <= 8'b00000000;
@@ -823,11 +823,6 @@ module system_fpga_top
 		dual_5v_ctrl = 1'b0;
 	end
 
-	// Enable audio
-	always @(posedge clk_in) begin
-		audio_disable = 1'b0;
-	end
-
 	// Not used
 	always @(posedge clk_in) begin
 		window_open_n = 1'b0;
diff --git a/system_fpga.pcf b/system_fpga.pcf
index 8beb403..9538c3a 100644
--- a/system_fpga.pcf
+++ b/system_fpga.pcf
@@ -80,7 +80,7 @@ set_io bmc_system_reset_request_n 12
 
 # Component disable lines
 set_io ast_video_disable_n 16
-set_io audio_disable 1
+set_io audio_power_down 1
 
 # Mode set lines
 set_io mode_set_n 25