32.9.2.3 Signal Multiplexing
Depending on the Byte Access Type (BAT), only the write signals or the byte select signals are used. To save IOs at the external bus interface, control signals at the SMC interface are multiplexed. The table below shows signal multiplexing depending on the data bus width and the byte access type.
| Signal Name | 16-bit Bus | 8-bit Bus | |
|---|---|---|---|
| Device Type | 1 x 16-bit | 2 x 8-bit | 1 x 8-bit |
| Byte Access Type (BAT) | Byte Select | Byte Write | – |
| NBS0_A0 | NBS0 | – | A0 |
| NWE_NWR0 | NWE | NWR0 | NWE |
| NBS1_NWR1 | NBS1 | NWR1 | – |