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[Arch] Use single-output DFF to further compress area

This commit is contained in:
tangxifan 2020-11-06 11:47:31 -07:00
parent 6811604e5c
commit 8d84d83eab
1 changed files with 4 additions and 4 deletions
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8
ARCH/openfpga_arch_template/k4_frac_N8_register_scan_chain_caravel_io_skywater130nm_fdhd_cc_openfpga.xml
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@ -171,10 +171,10 @@
<port type="output" prefix="lut3_out" size="2" lut_frac_level="3" lut_output_mask="0,1"/>
<port type="output" prefix="lut4_out" size="1" lut_output_mask="0"/>
<port type="sram" prefix="sram" size="16"/>
<port type="sram" prefix="mode" size="1" mode_select="true" circuit_model_name="sky130_fd_sc_hd__dfxbp_1" default_val="1"/>
<port type="sram" prefix="mode" size="1" mode_select="true" circuit_model_name="sky130_fd_sc_hd__dfxtp_1" default_val="1"/>
</circuit_model>
<!--Scan-chain DFF subckt ports should be defined as <D> <Q> <Qb> <CLK> <RESET> <SET> -->
<circuit_model type="ccff" name="sky130_fd_sc_hd__dfxbp_1" prefix="sky130_fd_sc_hd__dfxbp_1" verilog_netlist="${SKYWATER_OPENFPGA_HOME}/PDK/skywater-pdk/libraries/sky130_fd_sc_hd/latest/cells/dfxbp/sky130_fd_sc_hd__dfxbp_1.v">
<circuit_model type="ccff" name="sky130_fd_sc_hd__dfxtp_1" prefix="sky130_fd_sc_hd__dfxtp_1" verilog_netlist="${SKYWATER_OPENFPGA_HOME}/PDK/skywater-pdk/libraries/sky130_fd_sc_hd/latest/cells/dfxtp/sky130_fd_sc_hd__dfxtp_1.v">
<design_technology type="cmos"/>
<input_buffer exist="true" circuit_model_name="sky130_fd_sc_hd__inv_1"/>
<output_buffer exist="true" circuit_model_name="sky130_fd_sc_hd__inv_1"/>
@ -192,11 +192,11 @@
<port type="output" prefix="SOC_DIR" lib_name="SOC_DIR" size="1" is_global="true" is_io="true"/>
<port type="output" prefix="inpad" lib_name="FPGA_IN" size="1"/>
<port type="input" prefix="outpad" lib_name="FPGA_OUT" size="1"/>
<port type="sram" prefix="en" lib_name="FPGA_DIR" size="1" mode_select="true" circuit_model_name="sky130_fd_sc_hd__dfxbp_1" default_val="1"/>
<port type="sram" prefix="en" lib_name="FPGA_DIR" size="1" mode_select="true" circuit_model_name="sky130_fd_sc_hd__dfxtp_1" default_val="1"/>
</circuit_model>
</circuit_library>
<configuration_protocol>
<organization type="scan_chain" circuit_model_name="sky130_fd_sc_hd__dfxbp_1" num_regions="1"/>
<organization type="scan_chain" circuit_model_name="sky130_fd_sc_hd__dfxtp_1" num_regions="1"/>
</configuration_protocol>
<connection_block>
<switch name="ipin_cblock" circuit_model_name="mux_tree_tapbuf"/>