USB PHY Transmitter Control Register
| D_CAL | Resistor Trimming Code: 0000 = 0.16% 0111 = Nominal 1111 = +25% |
| RSVD0 | Reserved. Note: This bit should remain clear. |
| TXCAL45DN | Decode to select a 45-Ohm resistance to the USB_DN output pin |
| RSVD1 | Reserved. Note: This bit should remain clear. |
| TXCAL45DP | Decode to select a 45-Ohm resistance to the USB_DP output pin |
| RSVD2 | Reserved. |
| USBPHY_TX_EDGECTRL | Controls the edge-rate of the current sensing transistors used in HS transmit |
| RSVD5 | Reserved. |