TUSB320: Please review the schematic of TUSB320

Chase Jeong

Mastermind 9305 points

Part Number: TUSB320

Dear TI experts,

My customer made their schematic using TUSB320. Could you review this schematic?

Best regards,

Chase

5 months ago

0 Ryan Kitto 5 months ago

TI__Guru 56035 points

Hi Chase,

Here is my schematic review: TUSB320_Review_Arrow.pdf

Thanks,

Ryan

0 Chase Jeong 4 months ago in reply to Ryan Kitto

Mastermind 9305 points

Dear Ryan,

Thank you for your support.

may I know the reason of 200K pull up resistor for 2 I2C lines?

It is recommended as 4.7Kohm in the datasheet.

Best regards,

Chase

0 Ryan Kitto 4 months ago in reply to Chase Jeong

TI__Guru 56035 points

Hi Chase,

Is the customer using the TUSB320 with I2C or just in GPIO mode? If just being used for GPIO then these pins should be PU with a 200KOhm resistor since these pins will act as an open drain. If being used with I2C, then yes a 4.7KOhm PU would be the correct recommendation.

Thanks,

Ryan

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TUSB320: Please review the schematic of TUSB320