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厂商手册上提到库中有clock gate cell
可是当我设置: *是cell name
set_clock_gating_style \
-positive_edge_logic {integrated:********} \
-control_point before \
-max_fanout 32 \
-no_sharing \
-minimum_bitwidth 4 \
-sequential_cell latch
工具提示 Error: The library cell **** specified for use as an integrated clock-gating cell does not have the clock_gating_integrated cell attribute.The value required for this attribute is latch_posedege_precontrol (PWR-193)
于是我手动设置此属性:
set_attribute [get_lib_cells */********] clock_gating_integrated_cell latch_posedge_precontrol
但在综合时,报错:
Error: Could not find the EN pin with the correct attribute on the specified integrated clock-gating cell ****. (PWR-199)
Error: Could not find the exact pin matches with the integrated clock-gating cell *******. (PWR-197)
Warning: Combinational cell 'main_gate' (GTECH_AND2) cannot be translated exactly into '*****'. (TRANS-8)
Processing 'SNPS_CLOCK_GATE_HIGH_mem8_0'
Mapping integrated clock gating circuitry |
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