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ad_lvds_in: Allow to disable IDELAY 

The IDELAY is not always required, but it eats up power when instantiated. Allow to disable it.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
main
Lars-Peter Clausen 2017-04-17 13:11:12 +02:00
parent 45f87b46c2
commit 09ffe42603
1 changed files with 23 additions and 40 deletions
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63
library/xilinx/common/ad_lvds_in.v
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@ -83,39 +83,23 @@ module ad_lvds_in #(
// delay controller
generate
if ((IODELAY_CTRL == 1) && (DEVICE_TYPE == ULTRASCALE_PLUS)) begin
(* IODELAY_GROUP = IODELAY_GROUP *)
IDELAYCTRL #(.SIM_DEVICE ("ULTRASCALE")) i_delay_ctrl (
.RST (delay_rst),
.REFCLK (delay_clk),
.RDY (delay_locked));
end
endgenerate
generate
if ((IODELAY_CTRL == 1) && (DEVICE_TYPE == ULTRASCALE)) begin
(* IODELAY_GROUP = IODELAY_GROUP *)
IDELAYCTRL #(.SIM_DEVICE ("ULTRASCALE")) i_delay_ctrl (
.RST (delay_rst),
.REFCLK (delay_clk),
.RDY (delay_locked));
end
endgenerate
generate
if ((IODELAY_CTRL == 1) && ((DEVICE_TYPE == VIRTEX7) || (DEVICE_TYPE == VIRTEX6))) begin
(* IODELAY_GROUP = IODELAY_GROUP *)
IDELAYCTRL i_delay_ctrl (
.RST (delay_rst),
.REFCLK (delay_clk),
.RDY (delay_locked));
end
endgenerate
generate
if (IODELAY_CTRL == 0) begin
assign delay_locked = 1'b1;
generate if (IODELAY_ENABLE == 1 && IODELAY_CTRL == 1) begin
if ((DEVICE_TYPE == ULTRASCALE_PLUS) || (DEVICE_TYPE == ULTRASCALE)) begin
(* IODELAY_GROUP = IODELAY_GROUP *)
IDELAYCTRL #(.SIM_DEVICE ("ULTRASCALE")) i_delay_ctrl (
.RST (delay_rst),
.REFCLK (delay_clk),
.RDY (delay_locked));
end
if ((DEVICE_TYPE == VIRTEX7) || (DEVICE_TYPE == VIRTEX6)) begin
(* IODELAY_GROUP = IODELAY_GROUP *)
IDELAYCTRL i_delay_ctrl (
.RST (delay_rst),
.REFCLK (delay_clk),
.RDY (delay_locked));
end
end else begin
assign delay_locked = 1'b1;
end
endgenerate
@ -136,7 +120,7 @@ module ad_lvds_in #(
// idelay
generate
generate if (IODELAY_ENABLE == 1) begin
if (DEVICE_TYPE == VIRTEX6) begin
(* IODELAY_GROUP = IODELAY_GROUP *)
IODELAYE1 #(
@ -164,9 +148,7 @@ module ad_lvds_in #(
.CNTVALUEIN (up_dwdata),
.CNTVALUEOUT (up_drdata));
end
endgenerate
generate
if (DEVICE_TYPE == VIRTEX7) begin
(* IODELAY_GROUP = IODELAY_GROUP *)
IDELAYE2 #(
@ -192,9 +174,7 @@ module ad_lvds_in #(
.CNTVALUEIN (up_dwdata),
.CNTVALUEOUT (up_drdata));
end
endgenerate
generate
if (DEVICE_TYPE == ULTRASCALE) begin
assign up_drdata = up_drdata_s[8:4];
(* IODELAY_GROUP = IODELAY_GROUP *)
@ -220,9 +200,7 @@ module ad_lvds_in #(
.RST (1'b0),
.EN_VTC (~up_dld));
end
endgenerate
generate
if (DEVICE_TYPE == ULTRASCALE_PLUS) begin
assign up_drdata = up_drdata_s[8:4];
(* IODELAY_GROUP = IODELAY_GROUP *)
@ -248,6 +226,11 @@ module ad_lvds_in #(
.RST (1'b0),
.EN_VTC (~up_dld));
end
end else begin
assign rx_data_idelay_s = rx_data_ibuf_s;
assign up_drdata = 'h00;
end
endgenerate
// iddr