48.5 Signal Description
| Pin Name | Pin Description | Type | |
|---|---|---|---|
| Host | Client | ||
| MISO | Host In Client Out | Input | Output |
| MOSI | Host Out Client In | Output | Input |
| SPCK | Serial Clock | Output | Input |
| NPCS1–NPCS3 | Peripheral Chip Selects | Output | Unused |
| NPCS0/NSS | Peripheral Chip Select/Client Select | Output | Input |