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AM3358: RTC crystal does not work

Part Number: AM3358

Hi, Anyone help me?

Today, I start bring up my AM3358 processor board.

The RTC 32.768 KHz clock does not occur when the power is turned on

without downloading any boot firmware to the AM3358 processor(just empty processor).

RTC 32.768KHz X-Tal circuit does not oscillate. external capacitor of x-tal circuit is 22pF.

Is this symptom related to the Hardware circuit? Or is it related to the pinmux setting of

the AM3358 processor?