21.3.9 UARTx Smart Card Configuration Register
| Symbol | Description | Symbol | Description | Symbol | Description |
|---|---|---|---|---|---|
| R | Readable bit | HC | Cleared by Hardware | (Gray cell) | Unimplemented |
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
| C | Write to clear | S | Software settable bit | x | Channel number |
| Name: | UxSCCON |
| Offset: | 0x1720, 0x1760, 0x17A0 |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| RXRPTIF | TXRPTIF | BTCIF | WTCIF | GTCIF | |||||
| Access | R/W/HS | R/W/HS | R/W/HS | R/W/HS | R/W/HS | ||||
| Reset | 0 | 0 | 0 | 0 | 0 |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| RXRPTIE | TXRPTIE | BTCIE | WTCIE | GTCIE | |||||
| Access | R/W | R/W | R/W | R/W | R/W | ||||
| Reset | 0 | 0 | 0 | 0 | 0 |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| TXRPT[1:0] | CONV | T0PD | PRTCL | ||||||
| Access | R/W | R/W | R/W | R/W | R/W | ||||
| Reset | 0 | 0 | 0 | 0 | 0 | ||||
Bit 29 – RXRPTIF Receive Repeat Interrupt Flag bit
| Value | Description |
|---|---|
1 |
Parity error has persisted after the same character has been received five times (four retransmits) |
0 |
Flag is cleared |
Bit 28 – TXRPTIF Transmit Repeat Interrupt Flag bit
| Value | Description |
|---|---|
1 |
Line error has been detected after the last retransmit per TXRPT<1:0> |
0 |
Flag is cleared |
Bit 26 – BTCIF Block Time Counter Interrupt Flag bit
| Value | Description |
|---|---|
1 |
Block time counter has reached 0 |
0 |
Block time counter has not reached 0 |
Bit 25 – WTCIF Waiting Time Counter Interrupt Flag bit
| Value | Description |
|---|---|
1 |
Waiting time counter has reached 0 |
0 |
Waiting time counter has not reached 0 |
Bit 24 – GTCIF Guard Time Counter Interrupt Flag bit
| Value | Description |
|---|---|
1 |
Guard time counter has reached 0 |
0 |
Guard time counter has not reached 0 |
Bit 21 – RXRPTIE Receive Repeat Interrupt Enable bit
| Value | Description |
|---|---|
1 |
An interrupt is invoked when a parity error has persisted after the same character has been received five times (four retransmits) |
0 |
Interrupt is disabled |
Bit 20 – TXRPTIE Transmit Repeat Interrupt Enable bit
| Value | Description |
|---|---|
1 |
An interrupt is invoked when a line error is detected after the last retransmit per TXRPT<1:0> has been completed) |
0 |
Interrupt is disabled |
Bit 18 – BTCIE Block Time Counter Interrupt Enable bit
| Value | Description |
|---|---|
1 |
Block time counter interrupt is enabled |
0 |
Block time counter interrupt is disabled |
Bit 17 – WTCIE Waiting Time Counter Interrupt Enable bit
| Value | Description |
|---|---|
1 |
Waiting time counter interrupt is enabled |
0 |
Waiting time counter interrupt is disabled |
Bit 16 – GTCIE Guard Time Counter Interrupt Enable bit
| Value | Description |
|---|---|
1 |
Guard time counter interrupt is enabled |
0 |
Guard time counter interrupt is disabled |
Bits 5:4 – TXRPT[1:0] Transmit Repeat Selection bits
| Value | Description |
|---|---|
11 |
Retransmit the error byte four times |
10 |
Retransmit the error byte three times |
01 |
Retransmit the error byte twice |
00 |
Retransmit the error byte once |
Bit 3 – CONV Logic Convention Selection bit
| Value | Description |
|---|---|
1 |
Inverse logic convention |
0 |
Direct logic convention |
Bit 2 – T0PD
Pull-Down Duration for T = 0 Error Handling bit
| Value | Description |
|---|---|
1 |
2 ETU |
0 |
1 ETU |
Bit 1 – PRTCL Smart Card Protocol Selection bit
| Value | Description |
|---|---|
1 |
T = |
0 |
T = |