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// © IBM Corp. 2022
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// Licensed under the Apache License, Version 2.0 (the "License"), as modified by the terms below; you may not use the files in this
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// repository except in compliance with the License as modified.
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// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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//
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// Modified Terms:
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//
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// 1) For the purpose of the patent license granted to you in Section 3 of the License, the "Work" hereby includes implementations of
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// the work of authorship in physical form.
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//
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// Unless required by applicable law or agreed to in writing, the reference design distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language
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// governing permissions & limitations under the License.
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//
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// Brief explanation of modifications:
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//
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// Modification 1: This modification extends the patent license to an implementation of the Work in physical form – i.e.,
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// it unambiguously permits a user to make & use the physical chip.
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// Wordline decodes
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// Two versions:
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// 12-in -> 64 one-hot (all selects, 1 comp used)
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// 11-in -> 32 one-hot (half selects, 2 comps used)
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`timescale 1 ps / 1 ps
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// (c0)(12) -> 8 one-hots A0:A7
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// (3)(45) -> 8 one-hots B0:B7
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// A x B -> 64 one-hots W00:W63
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module decode_wordlines_64 (
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input c_na0,
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input c_a0,
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input na1_na2,
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input na1_a2,
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input a1_na2,
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input a1_a2,
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input na3,
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input a3,
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input na4_na5,
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input na4_a5,
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input a4_na5,
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input a4_a5,
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output [0:63] wl
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);
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wire [0:7] dcd_a_b;
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wire [0:7] dcd_a;
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wire [0:7] dcd_b_b;
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wire [0:7] dcd_b;
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wire [0:63] wl_b;
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sky130_fd_sc_hd__nand2_2 DCD_A0b (.A(c_na0), .B(na1_na2), .Y(dcd_a_b[0]));
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sky130_fd_sc_hd__nand2_2 DCD_A1b (.A(c_na0), .B(na1_a2), .Y(dcd_a_b[1]));
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sky130_fd_sc_hd__nand2_2 DCD_A2b (.A(c_na0), .B(a1_na2), .Y(dcd_a_b[2]));
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sky130_fd_sc_hd__nand2_2 DCD_A3b (.A(c_na0), .B(a1_a2), .Y(dcd_a_b[3]));
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sky130_fd_sc_hd__nand2_2 DCD_A4b (.A(c_a0), .B(na1_na2), .Y(dcd_a_b[4]));
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sky130_fd_sc_hd__nand2_2 DCD_A5b (.A(c_a0), .B(na1_a2), .Y(dcd_a_b[5]));
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sky130_fd_sc_hd__nand2_2 DCD_A6b (.A(c_a0), .B(a1_na2), .Y(dcd_a_b[6]));
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sky130_fd_sc_hd__nand2_2 DCD_A7b (.A(c_a0), .B(a1_a2), .Y(dcd_a_b[7]));
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sky130_fd_sc_hd__inv_2 DCD_A0 (.A(dcd_a_b[0]), .Y(dcd_a[0]));
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sky130_fd_sc_hd__inv_2 DCD_A1 (.A(dcd_a_b[1]), .Y(dcd_a[1]));
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sky130_fd_sc_hd__inv_2 DCD_A2 (.A(dcd_a_b[2]), .Y(dcd_a[2]));
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sky130_fd_sc_hd__inv_2 DCD_A3 (.A(dcd_a_b[3]), .Y(dcd_a[3]));
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sky130_fd_sc_hd__inv_2 DCD_A4 (.A(dcd_a_b[4]), .Y(dcd_a[4]));
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sky130_fd_sc_hd__inv_2 DCD_A5 (.A(dcd_a_b[5]), .Y(dcd_a[5]));
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sky130_fd_sc_hd__inv_2 DCD_A6 (.A(dcd_a_b[6]), .Y(dcd_a[6]));
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sky130_fd_sc_hd__inv_2 DCD_A7 (.A(dcd_a_b[7]), .Y(dcd_a[7]));
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sky130_fd_sc_hd__nand2_2 DCD_B0b (.A(na3), .B(na4_na5), .Y(dcd_b_b[0]));
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sky130_fd_sc_hd__nand2_2 DCD_B1b (.A(na3), .B(na4_a5), .Y(dcd_b_b[1]));
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sky130_fd_sc_hd__nand2_2 DCD_B2b (.A(na3), .B(a4_na5), .Y(dcd_b_b[2]));
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sky130_fd_sc_hd__nand2_2 DCD_B3b (.A(na3), .B(a4_a5), .Y(dcd_b_b[3]));
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sky130_fd_sc_hd__nand2_2 DCD_B4b (.A(a3), .B(na4_na5), .Y(dcd_b_b[4]));
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sky130_fd_sc_hd__nand2_2 DCD_B5b (.A(a3), .B(na4_a5), .Y(dcd_b_b[5]));
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sky130_fd_sc_hd__nand2_2 DCD_B6b (.A(a3), .B(a4_na5), .Y(dcd_b_b[6]));
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sky130_fd_sc_hd__nand2_2 DCD_B7b (.A(a3), .B(a4_a5), .Y(dcd_b_b[6]));
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sky130_fd_sc_hd__inv_2 DCD_B0 (.A(dcd_b_b[0]), .Y(dcd_b[0]));
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sky130_fd_sc_hd__inv_2 DCD_B1 (.A(dcd_b_b[1]), .Y(dcd_b[1]));
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sky130_fd_sc_hd__inv_2 DCD_B2 (.A(dcd_b_b[2]), .Y(dcd_b[2]));
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sky130_fd_sc_hd__inv_2 DCD_B3 (.A(dcd_b_b[3]), .Y(dcd_b[3]));
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sky130_fd_sc_hd__inv_2 DCD_B4 (.A(dcd_b_b[4]), .Y(dcd_b[4]));
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sky130_fd_sc_hd__inv_2 DCD_B5 (.A(dcd_b_b[5]), .Y(dcd_b[5]));
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sky130_fd_sc_hd__inv_2 DCD_B6 (.A(dcd_b_b[6]), .Y(dcd_b[6]));
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sky130_fd_sc_hd__inv_2 DCD_B7 (.A(dcd_b_b[7]), .Y(dcd_b[7]));
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genvar i, j;
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generate
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for (i = 0; i < 8; i = i + 1) begin
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for (j = 0; j < 8; j = j + 1) begin
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sky130_fd_sc_hd__nand2_2 DCD_Cb (.A(dcd_a[i]), .B(dcd_b[j]), .Y(wl_b[i*8+j]));
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sky130_fd_sc_hd__inv_2 DCD_C (.A(wl_b[i*8+j]), .Y(wl[i*8+j]));
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end
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end
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endgenerate
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endmodule
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