DP83848I / unused pins connection

Ryuji

Guru 20090 points

Other Parts Discussed in Thread: DP83865

Hello,

Could you please let me know the connection of below unsed pins?

Can we float these pins ?

-7pin (PWR_DOWN / INT)

-8,9,10,11,12 pins (JTAG Interface)

-25pin (25MHz_OUT)

-27pin(LED_SPEED/AN1)

And is VIH of PWR_DOWN/INT 2V(min) ?

Best Regards,

Ryuji Asaka

over 11 years ago

0 Patrick OFarrell over 11 years ago

TI__Mastermind 31600 points

All of these pins can be left floating if they are unused.

The VIH of the PWR_DOWN/INT pin is 2V (min) as shown in the Electrical Specifications for the I/O pins.

Patrick

0 Ryuji over 11 years ago in reply to Patrick OFarrell

Guru 20090 points

Hello Patrick san,

Thank you for your prompt reply.

I understood.

Best Regards,

Ryuji Asaka

0 Jonathan Lui over 10 years ago in reply to Patrick OFarrell

Prodigy 30 points

Is this also the case for DP83865? Page 7 of that datasheet says JTAG (for example) pins can be left floating if unused, but AN-1263, page 11 insists that unused pins are pulled down or up.

Which is it?

Interface

Interface forum

DP83848I / unused pins connection