TPS2546: Truth Table for TPS2546

user6097504

Part Number: TPS2546

We have designed USB ciicuit shematics using your TPS2546.

Setting of Truth Table（Specification P.28）are CTL1:1 CTL2:1 CTL3:0 ILIM_SEL:0.

I have about two questions about Truth Table.

1. If Setting of Truth Table are CTL1:0 CTL2:0 CTL3:0 ILIM_SEL:0、

USB_Data lines disconnected？

and Power current for external device to 0mA？

2. If Setting of Truth Table are CTL1:1 CTL2:1 CTL3:0 ILIM_SEL:0（Current limit setting：ILIM_LO)、

Is ILIM_HI Port Open OK? or Need Pull down register?

Best Regards

T.Matsuoka

0 Adam Mc Gaffin over 3 years ago

1. Correct. When CTL1,2,3 and ILIM = 0, the USB lines are disconnected and VBUS is held low. There is no current limit since VBUS is pulled low

2. If you are not using any setting that use ILIM_HI, you can leave that pin unconnected

0 user6097504 over 3 years ago in reply to Adam Mc Gaffin

Hi Adam san

Thank you for your support and comment.

I would like to add a question.

I want to know Setting of Truth Table ”VBUS=5V and external device to 0mA”.

Do you have above the setting?

Best Regards

T. Matsuoka

0 user6097504 over 3 years ago in reply to Adam Mc Gaffin

Hi Everyone.

Thank you for your support and comment.

I would like to add another question.

I want to realize,"USB_connected" and "VBUS=5V" and "external device to 2100mA"

If Setting of Truth Table are CTL1:1 CTL2:1 CTL3:1 ILIM_SEL:1,

is it possible?

Best Regards

T Matsuoka

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