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OpenRAM
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738 Commits 4 Branches 63 Tags 78 MiB
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597 Commits

Author SHA1 Message Date
Matt Guthaus 00a87d57ab Modified pinvbuf to have a stage effort of 4 for driving the 
clock bar to wordline enable.
Fixed comments in stimulus file to have right cycle numbers.
Removed clock gating on we signal since clock gating is already
done on the WL signals. It is redundant.
 2018-07-26 11:28:48 -07:00
Matt Guthaus dd7069dd98 Remove print statement 2018-07-25 15:51:48 -07:00
Matt Guthaus b7525a14c2 Change DIN to DOUT in characterizer. Spacing dff flops down by m2 not m1 pitch. 2018-07-25 15:50:49 -07:00
Matt Guthaus d6df215718 Always use m2_pitch as default for channel for via spacing rules 2018-07-25 15:47:11 -07:00
Matt Guthaus 6d71c3f790 Fix bug to remove pin from conflicts in addition to graph keys 2018-07-25 15:36:16 -07:00
Matt Guthaus a4bfbe3545 Move dff_array pins to center of rail 2018-07-25 15:08:04 -07:00
Matt Guthaus 44f0e4a1de Fix new offset coordinate syntax error 2018-07-25 13:47:36 -07:00
Matt Guthaus 64b3cfee26 Only print LVS/DRC stats when it is enabled 2018-07-25 13:44:34 -07:00
Matt Guthaus 7c254d540d Change channel route api to use pin maps instead of an insteads for cases where there are multiple instances that have the pins (e.g. decoders) 2018-07-25 11:37:06 -07:00
Matt Guthaus f7a2766c29 First draft of naive channel route in hierarchy_layout. It doesn't implement horizontal conflicts or try to minimize the number of channels. 2018-07-25 11:13:30 -07:00
Matt Guthaus 48d3b25b74 Rotate the output pins of the control logic. Need to fix this permanently. 2018-07-24 14:26:01 -07:00
Matt Guthaus 16a084fde1 Add vdd/gnd at right end of rails. Rename some signals for clarity. 2018-07-24 14:15:11 -07:00
Matt Guthaus aa2ea26db3 Convert control module to use hierarchy bus API 2018-07-24 10:35:07 -07:00
Matt Guthaus b50f57ea3a Remove control logic supply rails and replace with M3 supply pins 2018-07-24 10:12:54 -07:00
Matt Guthaus 45a53ed089 Rotate via in center for freepdk 2018-07-19 14:01:48 -07:00
Matt Guthaus 4c3bd0e42b Move WL gnd contacts outside the cell for simplicity 2018-07-19 13:38:45 -07:00
Matt Guthaus beee8229d1 Revert change. Add gnd pin to right on bitline load. 2018-07-19 13:26:12 -07:00
Matt Guthaus ea53066966 Align RBL inverter with first load inverter in delay chain to aid supply connections 2018-07-19 11:02:13 -07:00
Matt Guthaus 311ab97bfc Fix s_en stages to be even per Kevin's bug report. Assert minimum fanout to ensure vdd/gnd connections. 2018-07-19 10:51:20 -07:00
Matt Guthaus 128dfd5830 Add internal vdd/gnd connections for delay chain 2018-07-19 10:37:47 -07:00
Matt Guthaus 51958814a0 Fixing power via problems in freepdk45 2018-07-19 10:23:08 -07:00
Matt Guthaus 9983408fa3 Add verilog_write to sram wrapper for verilog unit test 2018-07-19 10:05:30 -07:00
Matt Guthaus 3f57853969 Use lower case names except for leaf cells and top level 2018-07-18 15:10:57 -07:00
Matt Guthaus 4a139b682d Add temporary options to LVS to allow name merging 2018-07-18 15:10:29 -07:00
Matt Guthaus a9c0ec5549 Add LVS correspondence points to each bank type 2018-07-18 14:29:04 -07:00
Matt Guthaus a878ce5500 Standardize DRC and LVS message levels 2018-07-18 14:28:43 -07:00
Matt Guthaus 58896a6f8e Fix control signal names on control_logic input 2018-07-18 13:41:44 -07:00
Matt Guthaus b88947ef5c Pass the sram design to lib instead of the sram wrapper 2018-07-18 11:51:42 -07:00
Matt Guthaus f43d4cc98f Fix routing clk connections of dff arrays 2018-07-18 11:38:58 -07:00
Matt Guthaus 0701fceb0b Use sram rather than new meta-sram class in the characterizer for delay 2018-07-18 10:39:29 -07:00
Matt Guthaus 1130062343 Fix syntax error in delay test to use new sram wrapper module 2018-07-18 10:33:18 -07:00
Matt Guthaus b8a3bc9b1a Space hier decoder input connections along rails to avoid conflicts 2018-07-18 10:21:58 -07:00
Matt Guthaus b8e3629923 Fix syntax error in unit test 2018-07-17 15:14:22 -07:00
Matt Guthaus 01655b1d54 Clean up tests. Enable 8-way tests. Some tests still have channel route conflicts. 2018-07-17 15:13:00 -07:00
Matt Guthaus ef60b02a81 Add vdd/gnd pins to dff_array 2018-07-17 15:01:31 -07:00
Matt Guthaus 6133d54684 Fix spacing between adjacent decoders 2018-07-17 15:01:16 -07:00
Matt Guthaus ffc866ef78 Single bank working except for channel routing error in 4-way case. 2018-07-17 14:40:04 -07:00
Matt Guthaus 7a69fc1bca Add col addr routing and data routing 2018-07-17 14:24:44 -07:00
Matt Guthaus 0665d51249 Must connect clock at top level for now 2018-07-17 14:24:07 -07:00
Matt Guthaus e82f97cce1 Add create_bus and connect_bus api 2018-07-17 14:23:29 -07:00
Matt Guthaus 0175c88a16 Convert predecodes to use create_bus api 2018-07-17 14:23:06 -07:00
Matt Guthaus ac22b1145f Convert bank to use create_bus routines. 
Modify control logic to have correct offset in SRAM.
 2018-07-16 14:13:41 -07:00
Matt Guthaus 77e786ae5e Fix bug in recomputing boundary with a new offset 2018-07-16 13:46:12 -07:00
Matt Guthaus afcc3563ae Add new supplies to RBL and control logic 2018-07-16 12:58:15 -07:00
Matt Guthaus 93e830e800 Add new supplies to replica bitline 2018-07-16 10:49:43 -07:00
Matt Guthaus 3bbb604504 Add new power supplies to delay chain 2018-07-16 10:19:52 -07:00
Matt Guthaus f3ae29fe0b Getting single bank to work reliably. Removed tri_gate from bank 
for now. Will add it in multibank arrays only. Not needed for
separate DIN and DOUT ports.
 2018-07-13 14:45:46 -07:00
Matt Guthaus 834fbac8de Remove extra print statements. 
Add wrappers for file generation in sram wrapper class.
 2018-07-13 09:38:43 -07:00
Matt Guthaus 0c23efe49b Reference local sram instance in sram.py. 2018-07-13 09:30:14 -07:00
Matt Guthaus a4c29ea527 Improve openram output. Fix save output function name. 2018-07-12 10:35:38 -07:00