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Update README.md
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BrianHGinc authored Sep 5, 2021
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Expand Up @@ -253,7 +253,7 @@ Folders:
- *DDR3_PLL5*clk[1] -> DDR_CLK_WDQ, DDR3 write data clock, set to 90 degrees out of phase compared to BHG_*|pll1[0].
- *DDR3_PLL5*clk[2] -> DDR_CLK_RDQ, DDR3 read data clock, at power-up, this clock is automatically tuned to the best phase to capture the read data coming back from the DDR3 ram chips.
- *DDR3_PLL5*clk[3] -> DDR_CLK_50, This is the interface clock for the DDR3_PHY controller and it runs at 50% speed of the DDR_CLK clock.
- *DDR3_PLL5*clk[3] -> DDR_CLK_25, This is the reset and power-up logic clock for the DDR3_PHY controller and it runs at 25% speed of the DDR_CLK clock.
- *DDR3_PLL5*clk[4] -> DDR_CLK_25, This is the reset and power-up logic clock for the DDR3_PHY controller and it runs at 25% speed of the DDR_CLK clock.

- CMD_CLK This clock is tied to either DDR_CLK, DDR_CLK_50, or DDR_CLK_25 depending on parameter 'INTERFACE_SPEED' being Full, Half, or Quarter.
- This clock drives the multiport COMMANDER module and sets it's interface clock speed.
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