DS90UB953-Q1: TIDA-01130

Kai Hsiao

Guru 12675 points

Part Number: DS90UB953-Q1
Other Parts Discussed in Thread: TIDA-01130

HI Sir

I refer TIDA-01130 reference design

1. The XCLK is 0.0696V ,is it enough for OV2775?

2. I saw the minimum load is 35kohm ,but reference design is using 402ohm ,which one is correct ?

Thanks

0 Steven(Shenzhen) Shi over 6 years ago

Kai,

please follow up TI's d/s requirement. you can delete the R15, and also you can set IDX with >35Kohms loading. thanks.

best regards,

Steven

0 Kai Hsiao over 6 years ago in reply to Steven(Shenzhen) Shi

Guru 12675 points

HI Steven

If use sync mode for CLKOUT ,it can't choice address 0x30 ,due to there is no pull up resister

Is it right ?

0 Steven(Shenzhen) Shi over 6 years ago in reply to Kai Hsiao

Hi Kai,
why NOT? the IDX setting is based on weak pull-up or pull-down resistors which do NOT impact the clock signal. thanks.

best regards,
Steven

0 Kai Hsiao over 6 years ago in reply to Steven(Shenzhen) Shi

Guru 12675 points

Hi Steven

If I choice 0x30 address ,there is no pull up resister on CLK_OUT

I can't make sure CLK_OUT could trigger "high" level or not ?

0 Steven(Shenzhen) Shi over 6 years ago in reply to Kai Hsiao

Kai,
the pullup and pulldown resistors are weak for CLK_out operation. please ignore it.

best regards,
Steven

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