TPS65982D USB_RP P/N

David Mckinney

Other Parts Discussed in Thread: TPS65982D

Are the TPS65982D pins USB_RP_P and USB_RP_N, which are shown as Analog I/O with Hi-Z POR State actually Hi-Z when the USB_RP path is not in use?

Can you inject a USB signal onto these pins while the device is powered on in any of the 0-7 factory device configuration states where the USB_RP path is not enabled?

During initial device assembly programming, the customer would like to inject the USB onto these ping and talk with other devices on the USB lines without causing any contention with the TPS65982D USB_RP_P/N pins.

over 8 years ago

0 Rahul Sharma16 over 8 years ago

TI__Expert 6430 points

Hi David,

Why does curtomer wants to check this if USB_RP path is not enabled?

If you're planning to use this path then you should just ground these pins using a resistance (1K-5M).

Thanks,

Rahul

0 David Mckinney over 8 years ago in reply to Rahul Sharma16

TI__Expert 6810 points

There is a CPU downstream of the TPS65982D which needs to be programmed via the USB_RP P/N pins. Can you inject a USB signal onto these pins while the device is powered on when the USB_RP path is not enabled? The pins should be HI-Z at this time and this should be possible.

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TPS65982D USB_RP P/N