pulp-platform/common_cells v2.0.0-beta

on GitHub

2.0.0-beta - 2026-07-02

Added

• Add deprecated v1 compatibility wrappers for renamed modules, packages, register macros and formal properties
• Add cc_no_deprecated Bender target for strict v2-only builds
• Add cc_pkg and merge cf_math_pkg, ecc_pkg, and CDC reset-control types into it
• Add cc_delta_counter, cc_majority_vote_filter, cc_serial_deglitch and cc_onehot
• Add formal checks for cc_cdc_reset_ctrlr and cc_lzc
• Add timed CDC test coverage for 2-phase, 4-phase, FIFO, gray FIFO, and clearable CDC paths

Changed

• Move the generic sync cell to tech_cells_generic
• Prefix public RTL modules, interfaces, testbenches, and formal properties with cc_
• Rename ports to _i/_o, parameters to UpperCamelCase, and type parameters to *_t
• Replace string parameters with enums and integer-like parameters with typed int unsigned or bit
• Convert dependent parameters to localparams where they are not part of the public API
• Add synchronous clr_i support to sequential cells and update register macro defaults
• Rename fifo_v3 to cc_fifo and shift_reg to cc_shift_register
• Remove testmode_i from cc_fifo and dependent modules
• Fold stream_arbiter_flushable into cc_stream_arbiter
• Rename the functional clear of cc_serial_deglitch to restart_i
• Restructure CDC implementations with explicit source/destination sides and unify configurable synchronizer parameters
• Extend CI with Bender-based formal runs, Slang, Verible, Verilator, Questa/VCS elaboration, and SpyGlass lint

Fixed

• cc_popcount: Fix output width
• cc_lzc: Fix non-power-of-two widths and add formal coverage
• cc_fifo: Fix usage_o truncation for power-of-two depths
• cc_rr_arb_tree: Fix inconsistent grant behavior for NumIn == 1
• cc_passthrough_stream_fifo: Fix pointer updates under full handshakes
• cc_cdc_reset_ctrlr: Keep async reset-control payloads contained inside the CDC
• cc_cdc_fifo_gray_clearable: Preserve async reset-control timing across sync-stage configurations
• Fix Verilator IMPLICIT, UNOPTFLAT, MULTIDRIVEN, and selected width warnings
• Fix SpyGlass lint findings and improve elaboration/tool compatibility

Removed

• Remove already-deprecated legacy modules that are not part of the v1 compatibility wrapper set
• Remove Travis CI and replace the old lint workflow with the new CI setup