Design Check: PLL SSC Errors

When you check your design, the Interface Designer applies design rules to your configuration settings. The following tables show some of the error messages you may encounter and explains how to fix them.

pll_ssc_rule_inst_name (error)

Message	Instance name is empty
To fix	Enter the instance name.

pll_ssc_rule_ref_clk_resource (error)

Message	Reference clock resource <res_name> is not configured as mipi_clkin connection
To fix	You get this error when the reference clock resource (GPIO block) is set to gpio instead of mipi_clkin. Change the setting for the GPIO block.

Message	Reference clock resource <res_name> input name is empty
To fix	Specify the name.

Message	Reference clock resource <res_name> is not configured as input
To fix	The GPIO block you are using as the reference clock must be configured as an input. Change the Mode setting for the GPIO block.

Message	Reference clock GPIO resource <res_name> has not been configured
To fix	You added the GPIO block but did not configure it correctly. It should be an input and should be configured as Connection Type > mipi_clkin.

Message	Reference clock PLL resource <res_name> Output Clock <#> has not been configured
To fix	If you choose Reference Clock Source Type > pll, you also need to configure the output clock for the PLL resource shown in the Base tab.

Message	Reference clock PLL resource <res_name> has not been configured
To fix	If you choose Reference Clock Source Type > pll, you also need to configure the PLL resource shown in the Base tab.

Message	Core reference clock pin name is empty
To fix	If you choose Reference Clock Source Type > core, then you need to enter the name for the pin.

pll_ssc_rule_pll_outclk (error)

Message	Empty PLL clock out pin name
To fix	You need to specify the output clock pin name.

pll_ssc_rule_auto_cal_freq (warning)

Message	Output Clock frequency is not match with actual one (Expected: <User Input>, Actual: <The freq that PLL can get>)
To fix	Click the Update Output Clock Frequency button to select the closest frequency that the PLL can get.

pll_ssc_rule_ssc_amp (error)

Message	SSC Amplitude must be less than SSC Init Amplitude
To fix	Change the values so that the SSC Amplitude is less than SSC Init Amplitude.

pll_ssc_rule_resource (error)

Message	Resource <name> is not a valid PLL SSC instance Resource name is empty
To fix	The resource you specified does not exist. Check whether you have a typo in the resource name.

pll_ssc_rule_resource_excluded (error)

Message	Resource <resource> is excluded in Package Planner. Please use another resource
To fix	The pins for the affected resource have been excluded in the Package Planner, and cannot be assigned. Remove the excluded setting in the Package Planner or choose another resource.