DS90UB954-Q1: Internal clock

Tomoaki Yoshida91

Genius 5255 points

Part Number: DS90UB954-Q1

Hi team,

We do emission tests on the 953-954 system.

Therefore, I want to know the frequency of the internal clocks the both of 953 and 954 respectively.

Best regards,

Tomoaki Yoshida

over 6 years ago

0 Mostafa Shuva over 6 years ago

TI__Intellectual 1930 points

Hello,

On the 953, you can set the internal clock frequency using register 0x05. The two options are 24.2 MHz to 25.5 MHz and 48.4 MHz to 51 MHz.

For the 954, the internal clock frequency is 25 MHz +/- 10% as mentioned in datasheet section 7.4.4.

0 Tomoaki Yoshida91 over 6 years ago in reply to Mostafa Shuva

Genius 5255 points

Hi Mostafa-san,

Thank you for your reply.

I understand.

Is there any other frequency divided clock that is used only inside the chip?

Best regards,

Tomoaki Yoshida

0 Mostafa Shuva over 6 years ago in reply to Tomoaki Yoshida91

TI__Intellectual 1930 points

Tomoaki-san,.

These are the main clocks in the respective chips. Any other frequency reference in the chip is derived from the two clocks mentioned. I hope this answers your question.

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DS90UB954-Q1: Internal clock