引脚到引脚的延迟使用IOPATH结构(construct)表示,这些结构定义了每个单元输入到输出的路径延迟。COND结构还可以用于额外指定有条件的引脚到引脚延迟。状态相关(state-dependent)的路径延迟也可以使用COND结构来指定,分布式延迟的建模是使用DEVICE结构指定的。 脉冲传播结构——PATHPULSE和PATHPULSEPERCENT可用于指定使用引脚到引...
引脚到引脚的延迟使用 IOPATH 结构(construct)表示,这些结构定义了每个单元输入到输出的路径延迟。COND 结构还可以用于额外指定有条件的引脚到引脚延迟。状态相关(state-dependent)的路径延迟也可以使用 COND 结构来指定,分布式延迟的建模是使用 DEVICE 结构指定的。 脉冲传播结构——PATHPULSE 和 PATHPULSEPERCENT 可用于...
SDF文件:(COND en==1'b1 (IOPATH in out (1.2) (1.6)); 互联线延时 SDF文件:(INTERCONNECT u1/out u2/in (1.2::1.4) (1.4::1.6)); timingcheck部分 SDF文件: (SETUP (posedge data) (COND rb==1'b1 (posedge clk)) (3::4)); SDF文件:(HOLD (posedge data) (COND rb==1'b1 (posedge c...
SDF文件是一种用于描述硬件设计中信号传播延迟和时序约束的工具。它主要包括以下几个部分:首先,IOPATH部分用于定义输入/输出路径的延迟,例如:<IOPATH> in out (1.1::1.3) (1.5::1.7)</IOPATH> 这表示从1.1到1.3的路径和从1.5到1.7的路径都有各自的延迟设置。接着,COND部分用于条件...
Currently, conditional path delays are not supported. Example: (INSTANCE x) (DELAY (ABSOLUTE (COND b (IOPATH a y (0.21) (0.54) ) ) (COND ~b (IOPATH a y (0.27) (0.34) ) ) (COND a (IOPATH b y (0.42) (0.44) ) ) (CONDELSE (IOPATH b y (0.37) (0.45) ) ) ) ) ...
SETUP (posedge D0) (COND (posedge CP)) (value1 :: value2) HOLD (posedge D0) (COND (posedge CP)) (value1 :: value2) setup/hold的值,可能也是与input transiaction/output capacitance有关, 所以通过sdf反标到verilog model中。 4)Modeling Interconnect Delays: INTERCONNECT---point to point的delay...
COND delays: output retain delay: port delays: interconnect delays: device delays: timing check entries: setuphold timing: recovery/removal timing: skew timing: width timing: priod timing: no change timing: timing environment entries: path constraint: period constraint: sum constraint: diff constrain...
CELL 中还可以用关键字 COND 指定条件延迟。 同时,也可以在 CELL 内做时序检查。 一个D 触发器的延迟说明及时序检查举例如下。 (CELL (CELLTYPE"d_gate") (INSTANCEu_dt) (DELAY (ABSOLUTE // D=1时 上升延迟为1.3-2.3, 下降延迟为1.5-2.2
python train.py -e config/stage3_cond/ -b 32 -w 8 -r last # resuming training if third stage has been trained Training notes: The config file needs to contain the saved checkpoints for the previous two stages of training. View tensorboard logs to determine when to stop training. The ...
特别需要注意的是,在none of the conditions specified for the path in the model are TRUE but a signal must still be propagated over the path,因此,CONDELSE可以用来指定条件脱靶的情况: CONDELSE ( IOPATH port_spec port_instance delval_list ) ...