1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
// Copyright 2022 Intel Corporation.
//
// This software and the related documents are Intel copyrighted materials,
// and your use of them is governed by the express license under which they
// were provided to you ("License"). Unless the License provides otherwise,
// you may not use, modify, copy, publish, distribute, disclose or transmit
// this software or the related documents without Intel's prior written
// permission.
//
// This software and the related documents are provided as is, with no express
// or implied warranties, other than those that are expressly stated in the
// License.
`resetall
`undefineall
`default_nettype none
/// Synchronize a reset to a clock domain. Provide both asynchronous asserting reset output
/// Both output resets deassert synchronous to clk
module dla_cdc_reset_async (
input wire clk,
input wire i_async_resetn,
output logic o_async_resetn /// Reset asserts asynchronously with i_async_reset_n, deasserts synchronous to clk
);
logic w_resetn;
// We instantiate an internal module for custom constraint matching. (The aclr pin gets the -to constraint)
dla_clock_cross_half_sync_internal #(
.METASTABILITY_STAGES ( 3 )
) dla_areset_clock_cross_sync_special_name_for_sdc_wildcard_matching (
.i_src_data (1'b1),
.clk_dst (clk),
.i_dst_async_resetn (i_async_resetn),
.o_dst_data (w_resetn)
);
assign o_async_resetn = w_resetn;
endmodule
|