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[HDL] Now use a proper drive strength of 4 in the digital I/O cells

This commit is contained in:
tangxifan 2020-11-18 11:58:21 -07:00
parent 3ae41e2207
commit ce91890a0e
1 changed files with 4 additions and 4 deletions
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8
HDL/common/digital_io_hd.v
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@ -36,14 +36,14 @@ module EMBEDDED_IO_HD (
.X(SOC_DIR)
);
// Use drive-strength 2 for a high fan-out from global routing architecture
sky130_fd_sc_hd__and2_2 IN_PROTECT_GATE (.A(SOC_DIR),
// Use drive-strength 4 for a high fan-out from global routing architecture
sky130_fd_sc_hd__and2_4 IN_PROTECT_GATE (.A(SOC_DIR),
.B(SOC_IN),
.X(FPGA_IN)
);
// Use drive-strength 1 for a potential high fan-out from SoC components
sky130_fd_sc_hd__and2b_1 OUT_PROTECT_GATE (.A_N(SOC_DIR),
// Use drive-strength 4 for a potential high fan-out from SoC components
sky130_fd_sc_hd__and2b_4 OUT_PROTECT_GATE (.A_N(SOC_DIR),
.B(FPGA_OUT),
.X(SOC_OUT)
);