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# CDC #3

## Origin Flip-flop

|Graph|Signal|Clock Domain|Flip-flop|
|:---:|---|---|---|
|<a href="/graphs/cdcs/cdc_3_graph.html"><img title="Open CDC Graph" src="/_static/images/icon_graph.png" style="max-height: 25px; width: auto;" alt="Open CDC Graph"></a>|Signal: `u2_ddr.cycle_count2`<br>Usage:<br>- <linty-anchor href="//ddr_ctrl.vhd#285">ddr_ctrl.vhd#285</linty-anchor><br>- <linty-anchor href="//ddr_ctrl.vhd#289">ddr_ctrl.vhd#289</linty-anchor>|<linty-anchor href="/plasma_3e.vhd#24">CLK_50MHZ (falling)</linty-anchor>|TOP (<linty-anchor href="/plasma_3e.vhd#84">plasma_3e</linty-anchor>) > <linty-anchor href="/plasma_3e.vhd#215">u2_ddr</linty-anchor> (<linty-anchor href="/ddr_ctrl.vhd#57">ddr_ctrl</linty-anchor>) > <linty-anchor href="/ddr_ctrl.vhd#284">ddr_ctrl.vhd#284</linty-anchor>|


## Target Flip-flop

|Graph|Signal|Clock Domain|Flip-flop|
|:---:|---|---|---|
|<a href="/graphs/cdcs/cdc_3_graph.html"><img title="Open CDC Graph" src="/_static/images/icon_graph.png" style="max-height: 25px; width: auto;" alt="Open CDC Graph"></a>|Signal: `u2_ddr.write_active`<br>Usage:<br>- <linty-anchor href="//ddr_ctrl.vhd#223">ddr_ctrl.vhd#223</linty-anchor><br>- <linty-anchor href="//ddr_ctrl.vhd#238">ddr_ctrl.vhd#238</linty-anchor><br>- <linty-anchor href="//ddr_ctrl.vhd#240">ddr_ctrl.vhd#240</linty-anchor>|<linty-anchor href="/plasma_3e.vhd#140">clk_reg (rising)</linty-anchor>|TOP (<linty-anchor href="/plasma_3e.vhd#84">plasma_3e</linty-anchor>) > <linty-anchor href="/plasma_3e.vhd#215">u2_ddr</linty-anchor> (<linty-anchor href="/ddr_ctrl.vhd#57">ddr_ctrl</linty-anchor>) > <linty-anchor href="/ddr_ctrl.vhd#218">ddr_ctrl.vhd#218</linty-anchor>|


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