TUSB1210 - Power-UP Timing (ULPI Clock Input Mode)

Hiroshi Katsunaga

Mastermind 6480 points

Other Parts Discussed in Thread: TUSB1210

Hello,

My customer has a question about TUSB1210.

[Q]

Can TUSB1210 input CLOCK before RESETB in figure 5-1?

I attach an illustration of image.

Regards,

Hiroshi Katsunaga

over 11 years ago

0 Diego Cortes over 11 years ago

TI__Mastermind 36085 points

Hello Katsunaga-san,

It is possible to have the input clock first, it wont damage the device. However, this may cause an undesirable behavior of the PHY. Therefore, the customer must follow the power-up sequence from the figure 5-1, in order to avoid any issue.

Best regards,

Diego.

0 Hiroshi Katsunaga over 11 years ago in reply to Diego Cortes

Mastermind 6480 points

Hello Diego-san,

Thank you for your fast reply.

Does (input 60M) CLOCK of the figure 5-1 mean the same time in a timing of RESETB ?

Best regards,

Hiroshi Katsunaga

0 Diego Cortes over 11 years ago in reply to Hiroshi Katsunaga

TI__Mastermind 36085 points

Hello Katsunaga-san,

It means that the input clock must be stable when RESETB goes to high.

Best regards,

Diego.

0 Hiroshi Katsunaga over 11 years ago in reply to Diego Cortes

Mastermind 6480 points

Hello Diego-san,

Thank you for your fast reply.

I understand it.

Best regards,

Hiroshi Katsunaga

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TUSB1210 - Power-UP Timing (ULPI Clock Input Mode)