4.14.3.8 SFR I/O Calibration 1 Register
This register can only be written if the WPEN bit is cleared in the Write Protection Mode register.
| Name: | SFR_CAL1 |
| Offset: | 0xB4 |
| Reset: | 0x00000084 |
| Property: | Read/Write |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| TEST_M | |||||||||
| Access | R/W | ||||||||
| Reset | 0 |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| CALP_M[3:0] | CALN_M[3:0] | ||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | |
Bit 8 – TEST_M Enable Calibration of Low/High Level Output Impedance of Pads with VDDIOM Supply
Enables calibration bits to adjust the low/high level output impedance of pads with power supply input VDDIOM.
Bits 7:4 – CALP_M[3:0] Calibration of High Level Output Impedance of Pads with VDDIOM Supply
Adjusts the high level output impedance of pads with power supply input VDDIOM.
| Value | Name |
|---|---|
| 0000 | Minimum output impedance value |
| 1111 | Maximum output impedance value |
Bits 3:0 – CALN_M[3:0] Calibration of Low Level Output Impedance of Pads with VDDIOM Supply
Adjusts the low level output impedance of pads with power supply input VDDIOM.
| Value | Name |
|---|---|
| 0000 | Maximum output impedance value |
| 1111 | Minimum output impedance value |