15.3.3 PORTMUX Control for USART
| Name: | USARTROUTEA |
| Offset: | 0x02 |
| Reset: | 0x00 |
| Property: | - |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| USART3[1:0] | USART2[1:0] | USART1[1:0] | USART0[1:0] | ||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bits 7:6 – USART3[1:0] USART 3 Communication
Write these bits to select alternative communication pins for USART 3.
| Value | Name | Description |
|---|---|---|
| 0x0 | DEFAULT | USART3 on PB[3:0] |
| 0x1 | ALT1 | USART3 on PB[5:4] |
| 0x2 | - | Reserved |
| 0x3 | NONE | Not connected to any pins |
Bits 5:4 – USART2[1:0] USART 2 Communication
Write these bits to select alternative communication pins for USART 2.
| Value | Name | Description |
|---|---|---|
| 0x0 | DEFAULT | USART2 on PF[3:0] |
| 0x1 | ALT1 | USART2 on PF[6:4] |
| 0x2 | - | Reserved |
| 0x3 | NONE | Not connected to any pins |
Bits 3:2 – USART1[1:0] USART 1 Communication
Write these bits to select alternative communication pins for USART 1.
| Value | Name | Description |
|---|---|---|
| 0x0 | DEFAULT | USART1 on PC[3:0] |
| 0x1 | ALT1 | USART1 on PC[7:4] |
| 0x2 | - | Reserved |
| 0x3 | NONE | Not connected to any pins |
Bits 1:0 – USART0[1:0] USART 0 Communication
Write these bits to select alternative communication pins for USART 0.
| Value | Name | Description |
|---|---|---|
| 0x0 | DEFAULT | USART0 on PA[3:0] |
| 0x1 | ALT1 | USART0 on PA[7:4] |
| 0x2 | - | Reserved |
| 0x3 | NONE | Not connected to any pins |