4.14.3.5 UTMI Full-Speed Trimming Register
This register can only be written if the WPEN bit is cleared in the Write Protection Mode register.
| Name: | SFR_UTMIFSTRIM |
| Offset: | 0x38 |
| Reset: | 0x00430211 |
| Property: | Read/Write |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| ZP_CAL[2:0] | ZN_CAL[2:0] | ||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | |||
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| ZP[2:0] | ZN[2:0] | ||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 1 | 0 | 0 | 0 | 1 | 1 | |||
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| Access | |||||||||
| Reset |
Bits 30:28 – ZP_CAL[2:0] FS Transceiver PMOS Impedance Calibration
Adjusts the FS transceiver PMOS output impedance calibration.
| Value | Name |
|---|---|
| 0 | Default |
| 1 | – |
| 2 | – |
| 3 | Higher |
| 4 | Lower |
| 5 | – |
| 6 | – |
| 7 | – |
Bits 26:24 – ZN_CAL[2:0] FS Transceiver NMOS Impedance Calibration
Adjusts the FS transceiver NMOS output impedance calibration.
| Value | Name |
|---|---|
| 0 | Default |
| 1 | – |
| 2 | – |
| 3 | Higher |
| 4 | Lower |
| 5 | – |
| 6 | – |
| 7 | – |
Bits 22:20 – ZP[2:0] FS Transceiver PMOS Impedance Trimming
Adjusts the FS transceiver PMOS output impedance.
| Value | Name |
|---|---|
| 0 | Lower |
| 1 | – |
| 2 | – |
| 3 | – |
| 4 | Default |
| 5 | – |
| 6 | – |
| 7 | Higher |
Bits 18:16 – ZN[2:0] FS Transceiver NMOS Impedance Trimming
Adjusts the FS transceiver NMOS output impedance.
| Value | Name |
|---|---|
| 0 | Higher |
| 1 | – |
| 2 | – |
| 3 | – |
| 4 | Default |
| 5 | – |
| 6 | – |
| 7 | Lower |