System Clock Status Register
| HCLKS | HCLK Status |
| USBCLK | USB FS Clock Status |
| PCK0 | Programmable Clock 0 Output Status |
| PCK1 | Programmable Clock 1 Output Status |
| PCK2 | Programmable Clock 2 Output Status |
| PCK3 | Programmable Clock 3 Output Status |
| PCK4 | Programmable Clock 4 Output Status |
| PCK5 | Programmable Clock 5 Output Status |
| PCK6 | Programmable Clock 6 Output Status |