[Manish]

Hi Neeraj,

Thank you for your response. The I2C address of the EEPROM has been configured appropriately.

Here are the voltage readings I observed:

• VDDS_DDR: 1.5V
• VDD_CORE: 1.1V
• VDD_MPU: 1.1V
• VDDS_PLL: 1.8V

Other voltage rails also appear to be within acceptable ranges.

Regarding the 24 MHz oscillator, I noticed there is no clock signal present when observed on the oscilloscope. It shows a constant high signal instead of an oscillating waveform.

Additionally, when monitoring the SD_CLK and CMD lines, there is no activity on either line. Both remain at a constant high signal, even when the SD card is inserted.

I managed to check part of the power sequence using the oscilloscope (50 MHz, 2-channel). Specifically, I monitored:

• Channel 1: SYS_RTC_1P8V
• Channel 2: SYS_VDD_1P8V

I am attaching an image of the observed power sequence. Since I am relatively new to using the oscilloscope.

I would appreciate your feedback or guidance on what are the next steps to take regarding this issue.

Thank you,
Manish

Attachments:

1. 

   SDS00001.bmp
   

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