AM3352: Not used pins

Hi ,

Thanks for reply.
Actually, this wiki mension as bellow.

However, there is no mention about "PULL UP /Down " comment for un -use pin.
Could you please tell use any disposition for un-use pin if Pull up/down setting is ignore ?


Wiki **********************************************************************************************************************************
Unused Signals
Signals on interfaces that are unused can typically be left as no connect. Many of the IOs have a Pad Control Register (see Chapter 9 of the TRM for more details) which gives control over the input capabilities of the I/O (RXACTIVE field in each conf_<module>_<pin> register). Software should disable the I/Os which are no connects (ie, RXACTIVE=0) as soon as possible in initialization. This RXACTIVE field defaults to "input active" for most signals, which means there is a potential for some leakage during powerup of the chip if the input floats to a mid-supply level before the software can initialize the I/O. This should only be a concern if you are attempting to power up the design with a minimum power consumption. Most designs should be able to tolerate this small amount of leakage in each floating I/O until the software has a change to disable it. After disabling the I/O, no leakage will occur.

Unused Power Rails
If ADC is not used...
Connect all TSC_ADC terminals (VREFP, VREFN, AIN[7:0], VDDA_ADC, and VSSA_ADC) to same ground as all VSS terminals.
If USB0 or USB1 is not used...
Connect the respective VDDA1P8V_USB terminal to any 1.8-V power supply and respective VDDA3P3V_USB terminal to any 3.3-V power supply. If the system does not have a 3.3-V power supply, the VDDA3P3V_USB terminal may be connected to ground.
The OTG_PWRDN and CM_PWRDN bits in the respective USB_CTRL register can be used to power down the unused USB PHY to minimize power supply leakage current. These bits default to the powered-up state after the AM335x device has been reset. The USB PHY can be powered down by setting both of these bits to "1".
The respective VBUS, ID, DP, and DM terminals may be connected to ground or left floating.
The respective CE terminal should be left floating.
If RTC internal oscillator is not used...
This can be the case when:
A 1.8 volt LVCMOS clock source is used rather than a crystal circuit
Connect the clock source to the RTC_XTALIN terminal, leave the RTC_XTALOUT terminal open-circuit, and connect VSS_RTC to VSS if using the ZCZ package option
The AM335x RTC is not used
Leave the RTC_XTALIN and RTC_XTALOUT terminals open-circuit, and connect VSS_RTC to VSS if using the ZCZ package option

Hi,

Actually, I would confirm following E16 and B15 pins (ZCZ package).

Could you please tell us in this case ?

Hi,

You mean, we don't need Pull up or pull down setting for this float pin , correct ?