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* Clean-up * Deprecate pulp* and cluster* cells, merge similar cells into same file * Add power cells * CONTRIBUTING.md: Remove text and link to central repo * Update CHANGELOG.md
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# Contributing | ||
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See [our style and contribution guidelines](https://github.com/pulp-platform/style-guidelines). |
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# Generic Technology Cells (API to Cell Library) | ||
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Maintainer: Florian Zaruba <[email protected]> | ||
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This repository contains technology related cells like SRAMs, clock-gating cells, power management cells. The description here are: | ||
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- **Behavioral**: Meant for RTL simulation only. | ||
- **FPGA**: Meant for FPGA implementation. Currently we only support Xilinx FPGAs. But we are happy to accept patches for Altera or other devices. | ||
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It is the purpose of your technology specific file to include the cells with correct drive strength. We do not make the assumption in the front-end anymore. | ||
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> As this layer needs to be re-implemented for every new technology keep it thin! | ||
## Cell Contents | ||
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If you want to get started in your own technology (either an unsupported FPGA or an ASIC technology) please provide implementations for the cells in this repository. | ||
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### Clock Cells | ||
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Clock cells usually are care-fully designed cells which do not exhibit any glitches. Therefore they need to be manually instantiated in ASIC designs. All clock cells can be found in `tc_clk.sv`. | ||
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| Name | Description | Status | Xilinx | | ||
|-------------------|------------------------------|--------|--------------------| | ||
| `tc_clk_and2` | Clock and gate | active | :white_check_mark: | | ||
| `tc_clk_buffer` | Clock buffer | active | :white_check_mark: | | ||
| `tc_clk_gating` | Integrated clock gating cell | active | :white_check_mark: | | ||
| `tc_clk_inverter` | Clock inverter | active | :white_check_mark: | | ||
| `tc_clk_mux2` | Clock Mux with two inputs | active | :white_check_mark: | | ||
| `tc_clk_xor2` | Clock Xor | active | :white_check_mark: | | ||
| `tc_clk_delay` | Programmable clock-delay | active | | | ||
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### Memory | ||
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| Name | Description | Status | Xilinx | | ||
|-----------|----------------------------------------------------------|--------|--------------------| | ||
| `sp_sram` | Single-ported SRAM with bit-error injection capabilities | active | :white_check_mark: | | ||
| `dp_sram` | Dual-ported SRAM with bit-error injection capabilities | active | :white_check_mark: | | ||
| `mp_sram` | Multi-ported SRAM with bit-error injection capabilities | active | | | ||
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### Power Cells | ||
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Power cells are mostly used for advanced power gating features and not used in any of our open-source IPs. However, feel-free to re-use them. All clock cells can be found in `tc_pwr.sv`. | ||
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| Name | Description | Status | | ||
|-------------------------------------|--------------------------------------|--------| | ||
| `tc_pwr_level_shifter_in` | Level Shifter | active | | ||
| `tc_pwr_level_shifter_in_clamp_lo` | Level Shifter w/ clamp to `1'b0` | active | | ||
| `tc_pwr_level_shifter_in_clamp_hi` | Level Shifter w/ clamp to `1'b1` | active | | ||
| `tc_pwr_level_shifter_out` | Level Shifter | active | | ||
| `tc_pwr_level_shifter_out_clamp_lo` | Level Shifter w/ clamp to `1'b0` | active | | ||
| `tc_pwr_level_shifter_out_clamp_hi` | Level Shifter w/ clamp to `1'b1` | active | | ||
| `tc_pwr_power_gating` | Power Gate with ctrl and status pins | active | | ||
| `tc_pwr_isolation_lo` | Isolation Cell w/ isolate to `1'b0` | active | | ||
| `tc_pwr_isolation_hi` | Isolation Cell w/ isolate to `1'b1` | active | |
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