Extended pin function setting register 08
| RTS4E | RTS4E output select bit |
| CTS4S | CTS4S input select bit |
| SIN4S | SIN4S input select bit |
| SOT4B | SOT4B input/output select bit |
| SCK4B | SCK4 input/output select bit |
| SIN5S | SIN5S input select bit |
| SOT5B | SOT5B input/output select bit |
| SCK5B | SCK5 input/output select bit |
| SIN6S | SIN6S input select bit |
| SOT6B | SOT6B input/output select bit |
| SCK6B | SCK6 input/output select bit |
| SIN7S | SIN7S input select bit |
| SOT7B | SOT7B input/output select bit |
| SCK7B | SCK7 input/output select bit |