13.4.3.8 SPI Slave Select Register
The following table describes the register that specifies the slave that has been selected.
| Bit Number | Name | R/W | Reset Value | Description |
|---|---|---|---|---|
| [31:8] | Reserved | R/W | 0 | Software must not rely on the value of a reserved bit. To provide compatibility with future products, the value of a reserved bit must be preserved across a read-modify-write operation. |
| 7:0 | SLAVE SELECT | R/W | 0 | Specifies the slave selected. Writing one to
a bit position selects the corresponding slave. SLAVESELECT[7:1] are available at the FPGA fabric interface, while SLAVESELECT[0] is available at the SPI_X_SS[0] pin. The slave select output polarity is active-low. In TI mode, the slave select output is inverted to become active-high. |