SBCR
Shadow Break Control Register.
| Module Instance | Base Address | Register Address |
|---|---|---|
| i_uart_0_uart_address_block | 0xFFC02000 | 0xFFC02090 |
| i_uart_1_uart_address_block | 0xFFC02100 | 0xFFC02190 |
Size: 32
Offset: 0x90
Access: RW
Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
| Bit Fields | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
|
RSVD_SBCR_31to1 RO 0x0 |
|||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|
RSVD_SBCR_31to1 RO 0x0 |
sbcb RW 0x0 |
||||||||||||||
SBCR Fields
| Bit | Name | Description | Access | Reset | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 31:1 | RSVD_SBCR_31to1 |
Reserved bits [31:1] - Read Only |
RO | 0x0 | ||||||
| 0 | sbcb |
Shadow Break Control Bit. This is a shadow register for the Break bit (LCR[6]), this can be used to remove the burden of having to performing a read modify write on the LCR. This is used to cause a break condition to be transmitted to the receiving device. If set to one the serial output is forced to the spacing (logic 0) state. When not in Loopback Mode, as determined by MCR[4], the sout line is forced low until the Break bit is cleared. If SIR_MODE == Enabled and active (MCR[6] set to one) the sir_out_n line is continuously pulsed. When in Loopback Mode, the break condition is internally looped back to the receiver.
|
RW | 0x0 |