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[OMAP-L138] Bypass capacitor at USB0_VDDA12 pin when both USB ports are not used

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Hi,

The USB0_VDDA12 pin description in the latest revision of OMAP-L138 DS (SPRS586H) have added the following requirement: "Table 3-32. Unused USB0 and USB1 Signal Configurations" - "When USB0 and USB1 are not used" - "USB0_VDDA12" - "Internal USB PHY output connected to an external 0.22-uF filter capacitor" (instead of "No connect" as in previous revision).

This correction is agreed with the statement introduced in previous DS version: "For proper device operation, this pin must always be connected via a 1 uF capacitor to VSS (GND), even if USB0 is not being used."

However, an year ago I've asked about similar correction in C6745 DS and the answer was: "The latest datasheet is not correct and will be corrected. When USB0 and USB1 are not used, USB0_VDDA12 is NO CONNECT".

So I'm forced to repeat my question (for L138 now):

We are currently shipping some products based on OMAP-L138 with no capacitor at USB0_VDDA12 pin to our customers. These products have both USB0 and USB1 unused. So what might be the possible negative effects related to the lack of that capacitor? 

BR,
  Denis


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