Hi Team,
My customer has a few questions regarding the errata i2287.
AM243x Errata Link: https://www.ti.com/lit/pdf/sprz457
The custom board which implemented Rev.1 XAM2434 they are evaluating is as below:
- J15, K14(both VDDS_MMC0) are connected to 1.8V power
- J13(VDDA_ADC is connected to GND (ADC is not used on our application)
- K16(VMON_1P8_MCU),E12(VMON_1P8_SOC are connected to 1.8V power 1.8V(VMON_1P8 is not used on our application)
They have the questions below:
- Errata i2287 describes the following: If ADC0 is not being used, where VDDA_ADC0 is connected to VSS as described in the Connections for Unused Pins section of the datasheet, a SR2.0 device cannot be installed. This is not allowed because the potential applied to ADC0_REFP can never exceed the potential applied to VDDA_ADC0,... If they implement Rev.2 AM243x into their current custom board, what will happen? (J13(VDDA_ADC) is connected to GND, J15(ADC0_REFP) is connected to 1.8V power) For example, they've listed below some possible cases:
- ADC block will be damaged.
- Blocks other than ADC will be damaged or operate abnormally.
- Protection diode between VDDA_ADC and ADC0_REFP will conducts in the forward direction. So 1.8V power and GND will be shorten in the CPU package.
- Other defects will occur (If other defects will occur, please elaborate)
- According to the datasheet, says the following:
If these pins are connected to GND or remain floating, what will happen? The datasheet doesn't say about the effect. For example will the following occur?
- MMC0 or VMON will operate abnormally.(but we don't use them..)
- Functions other than MMC0 and VMON will operate abnormally.
- Due to MMC0 or VMON block damage or malfunction, Defects on EMC, timing, logic level and so on will occur.
- Other defects will occur
