The state of the PWR#_I2C_SDA port

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NoAr_1540581
Level 5
Level 5
Distributor - Macnica (Japan)
5 solutions authored 250 sign-ins 100 replies posted

Hello

Please tell me the state(CMOS output or Open drain or Hi-Z) of PWR#_I2C_SDA pin(26pin) during the following each operation period?

Case1: During Reset.

Case2:Immedietely after reset cancellation(Initial setting).

Case3:During I2C operation.

Case4:Transition period of I2C operation END to /PWR operation start.

Case5:Immedietely after /PWR operation is started(Initial setting)

Best Reagrds

Arai

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1 Solution
Anonymous
Not applicable

Hello Arai san,

Case1: During RESET, PWR#/I2C_SDA pin will be Hi-Z.

Case2: After RESET is de-asserted, the pin will be configured for I2C_SDA to look for external EEPROM if any connected to boot from it.

Case3: During I2C operation, it will be used for I2C operation only which is I/O.

Case4: It will be Hi-Z while switching.

Case5: It will be an Output pin.

Regards,

Anil

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1 Reply
Anonymous
Not applicable

Hello Arai san,

Case1: During RESET, PWR#/I2C_SDA pin will be Hi-Z.

Case2: After RESET is de-asserted, the pin will be configured for I2C_SDA to look for external EEPROM if any connected to boot from it.

Case3: During I2C operation, it will be used for I2C operation only which is I/O.

Case4: It will be Hi-Z while switching.

Case5: It will be an Output pin.

Regards,

Anil

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