tfr
Transmit FIFO Read
Module Instance | Base Address | Register Address |
---|---|---|
i_uart_0_uart_address_block | 0xFFC02000 | 0xFFC02074 |
i_uart_1_uart_address_block | 0xFFC02100 | 0xFFC02174 |
Size: 32
Offset: 0x74
Access: RO
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_tfr_31to8 RO 0x0 |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
rsvd_tfr_31to8 RO 0x0 |
tfr RO 0x0 |
tfr Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
31:8 | rsvd_tfr_31to8 |
Reserved bits [31:8] - Read Only |
RO | 0x0 |
7:0 | tfr |
Transmit FIFO Read. These bits are only valid when FIFO access mode is enabled (FAR[0] is set to one). When FIFO's are implemented and enabled, reading this register gives the data at the top of the transmit FIFO. Each consecutive read pops the transmit FIFO and gives the next data value that is currently at the top of the FIFO. When FIFO's are not implemented or not enabled, reading this register gives the data in the THR. |
RO | 0x0 |