24.3.4 UTMI High-Speed Trimming Register
| Name: | SFR_UTMIHSTRIM |
| Offset: | 0x34 |
| Reset: | 0x00044433 |
| Property: | Read/Write |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| SLOPE2[2:0] | |||||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 1 | 0 | 0 | ||||||
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| SLOPE1[2:0] | SLOPE0[2:0] | ||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 1 | 0 | 0 | 1 | 0 | 0 | |||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| Access | |||||||||
| Reset |
Bits 8:10, 12:14, 16:18 – SLOPE UTMI HS PORTx Transceiver Slope Trimming
Adjusts HS transceiver output slope for PORTx.
These bits are duplicated for each port because the HS slope depends on the PCB line length. Short lines tend to be seen as lumped capacitances and exhibit a slower rise/fall time, while longer lines appear as transmission lines with sharper edges.
| Value | Name |
|---|---|
| 111 | Slower |
| 110 | – |
| 101 | – |
| 100 | Default |
| 011 | – |
| 010 | – |
| 001 | – |
| 000 | Faster |