I have questions about TMDS361B as follows.
My customers are in trouble.
Please give me a reply by June 6 of Japan time.
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Q1 about Decoupling Capacitors
My customer will connect the ferrite bead to VCC terminals,
configure filters using it between VCC to GND.
All VCC terminals are connected 0.01uF decoupling capacitors.
So, I have a question.
I checked the EVM schematic of TMDS361B(TMDS361_EVM_REV_B.pdf).
Decoupling capacitors of 0.1uF and 1.0uF are connected to VCC terminals.
Are these indispensable?
If they are necessary, how should I connect decoupling capacitors to the VCC terminals?
Please send PCB layout of EVM to me.
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Q2 about HPD_SINK terminal
Please refer to file of "HPD_SINK.png".
This figure is described p.31 of data sheet.
If 3.3V logic level signal are inputted into HPD_SINK terminal,
I think that the level shifter(MOS FET & resistor structure) is not necessary.
Is it correct?
Moreover, is it possible to use the bipolar transistor instead of the MOS FET in level shifter?
I think that the reason you used the MOS FET is low gate leak current.
Is it correct?
Please tell me about it.
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Q3 about EVM schematic
I checked EVM schmatic of TMDS361B(TMDS361_EVM_REV_B.pdf) about HPD_SINK terminal.
The schematic of EVM schematic is different from p.31 of data sheet.
Why is this different?
Please tell me this reason.
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Q4 about connection of TMDS361B and HDMI connector
I checked p.34 of data sheet about SCL* and SDA* lines.
SCL1/SDA1 of TMDS361B and SCL/SDA of HDMI connector are directly connected.
When TMDS361B is power off and is inserted HDMI cable, is it no problem?
Is it necessary to insert the switches between TMS361B and HDMI connector?
Please tell me about it.
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Best Regards,
Kato