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Remove unnecessary shadow valid registers

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich 2023-12-01 14:03:55 -08:00
parent be0d9b7b88
commit 36cf9c9b06
1 changed files with 1 additions and 10 deletions
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11
rtl/ptp_td_leaf.v
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@ -225,8 +225,6 @@ reg [PERIOD_NS_W+32-1:0] src_period_shadow_reg = 0;
reg [9+SRC_FNS_W-1:0] src_ns_reg = 0; reg [9+SRC_FNS_W-1:0] src_ns_reg = 0;
reg [9+32-1:0] src_ns_shadow_reg = 0; reg [9+32-1:0] src_ns_shadow_reg = 0;
reg src_fns_shadow_valid_reg = 1'b0;
reg src_ns_shadow_valid_reg = 1'b0;
always @(posedge ptp_clk) begin always @(posedge ptp_clk) begin
src_load_reg <= 1'b0; src_load_reg <= 1'b0;
@ -242,15 +240,12 @@ always @(posedge ptp_clk) begin
if (td_tvalid_reg) begin if (td_tvalid_reg) begin
if (td_tid_reg[3:0] == 4'd6) begin if (td_tid_reg[3:0] == 4'd6) begin
src_ns_shadow_reg[15:0] <= td_tdata_reg; src_ns_shadow_reg[15:0] <= td_tdata_reg;
src_fns_shadow_valid_reg <= 1'b0;
end end
if (td_tid_reg[3:0] == 4'd7) begin if (td_tid_reg[3:0] == 4'd7) begin
src_ns_shadow_reg[31:16] <= td_tdata_reg; src_ns_shadow_reg[31:16] <= td_tdata_reg;
src_fns_shadow_valid_reg <= 1'b1;
end end
if (td_tid_reg[3:0] == 4'd8) begin if (td_tid_reg[3:0] == 4'd8) begin
src_ns_shadow_reg[40:32] <= td_tdata_reg; src_ns_shadow_reg[40:32] <= td_tdata_reg;
src_ns_shadow_valid_reg <= 1'b1;
end end
if (td_tid_reg[3:0] == 4'd11) begin if (td_tid_reg[3:0] == 4'd11) begin
src_period_shadow_reg[15:0] <= td_tdata_reg; src_period_shadow_reg[15:0] <= td_tdata_reg;
@ -264,11 +259,7 @@ always @(posedge ptp_clk) begin
end end
if (src_load_reg) begin if (src_load_reg) begin
if (src_ns_shadow_valid_reg && src_fns_shadow_valid_reg) begin src_ns_reg <= src_ns_shadow_reg >> (32-SRC_FNS_W);
src_ns_reg <= src_ns_shadow_reg >> (32-SRC_FNS_W);
end
src_fns_shadow_valid_reg <= 1'b0;
src_ns_shadow_valid_reg <= 1'b0;
src_period_reg <= src_period_shadow_reg; src_period_reg <= src_period_shadow_reg;
src_marker_reg <= !src_marker_reg; src_marker_reg <= !src_marker_reg;
end end