Hi TI team,
Please clarify the MAC impedance value steps (Is it 1 ohm) for RX and the default value (is it 35 ohm).
9-5 mac_rx_impedance_ctrl R/W 0b RX MAC interface PAD impedance contro;
How about TX
4-0 mac_tx_impedance_ctrl R/W 0b TX MAC interface PAD impedance control
Regards,
Sreenivasa
Hello Evan,
Thank you.
Is the above table not valid.
0x456 bits [5] and [0] control the impedance of the RX and TX MAC interface pads, respectively, which impacts the slew rate. For these bits, value 0 is fast mode, and 1 is slow mode.
These are the only two options, and bits[9:6] and [4:1] have no effect. Bit[0] is only important when using MII mode, as the TX_CLK is an output from the PHY.
Could you please point me to the above description in the data sheet.
Regards,
Sreenivasa
