Other Parts Discussed in Thread: DP83822I
Hi,
I have a question about DP83822I unused pins.
My customer are going to use DP83822 in RMII mode.
They are leaving the following pins floating.
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- pin 2 TX_CLK
- pin 29 COL/GPIO2
- pin 26 RX_DV/RX_CTRL
- pin 25 RX_CLK
- pin 6 TX_D2
- pin 7 TX_D3
- pin 32 RX_D2
- pin 1 RX_D3/GPIO3
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Is it okay to leaving these pins floating?
Or should they use external pull up/down resistor?
If external pull up/down is recommended, what value of resistor should be used?
I have one more question to ask.
They are not using RX_DV/RX_CTRL pin.
Is this RX_DV/RX_CTRL pin need to be used in RMII mode as Receive data Valid?
My guess is, they are using CRS/CRS_DV pin so that RX_DV/RX_CTRL pin is not required.
Is it correct?
best regards,
g.f.
