大师们帮忙看一下这条时序路径
时间:10-02
整理:3721RD
点击:
起始寄存器的驱动时钟为什么有个撇啊?是什么意思啊?
谢谢大神们了。
Startpoint: core_top_inst/lb_a9mg_top_inst/mg_a9_top/A9_DAPLite_top/u_daplite/uDAPSWJDP/uDAPJtagDpProtocol/TDOeni_reg
(rising edge-triggered flip-flop clocked by jtag_tck_pad')
Endpoint: JTAG_TDO (output port clocked by jtag_tck_pad)
Path Group: jtag_tck_pad
Path Type: max
PointFanoutCapDTransTransDerateDeltaIncrPath
--------------------------------------------------------------------------------------------------
clock jtag_tck_pad' (rise edge)25.00025.000
clock source latency0.00025.000
JTAG_TCK (inout)10.0000.00025.000 f
JTAG_TCK (net)131.865
pad_io_inst/JTAG_TCK (pad_io)0.0001.0000.00025.000 f
谢谢大神们了。
Startpoint: core_top_inst/lb_a9mg_top_inst/mg_a9_top/A9_DAPLite_top/u_daplite/uDAPSWJDP/uDAPJtagDpProtocol/TDOeni_reg
(rising edge-triggered flip-flop clocked by jtag_tck_pad')
Endpoint: JTAG_TDO (output port clocked by jtag_tck_pad)
Path Group: jtag_tck_pad
Path Type: max
PointFanoutCapDTransTransDerateDeltaIncrPath
--------------------------------------------------------------------------------------------------
clock jtag_tck_pad' (rise edge)25.00025.000
clock source latency0.00025.000
JTAG_TCK (inout)10.0000.00025.000 f
JTAG_TCK (net)131.865
pad_io_inst/JTAG_TCK (pad_io)0.0001.0000.00025.000 f
下降沿触发
大神,可是路径里面写着还是rise edge啊,为什么不写fall edge呢?
因为你clock path上面有inverter
谢谢指教
你这个TDO是由TCK的下降沿触发后送出来的
反沿 clock