33.22.12 PMC USB Clock Register
This register can only be written if the WPEN bit is cleared in the PMC Write Protection Mode Register.
Name: | PMC_USB |
Offset: | 0x0038 |
Reset: | 0x00000000 |
Property: | Read/Write |
Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
Access | |||||||||
Reset |
Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
Access | |||||||||
Reset |
Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
USBDIV[3:0] | |||||||||
Access | R/W | R/W | R/W | R/W | |||||
Reset | 0 | 0 | 0 | 0 |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
USBS | |||||||||
Access | R/W | ||||||||
Reset | 0 |
Bits 11:8 – USBDIV[3:0] Divider for USB OHCI Clock
USB Clock is Input clock divided by USBDIV + 1.
Bit 0 – USBS USB OHCI Input Clock Selection
Value | Description |
---|---|
0 | USB Clock Input is PLLA. |
1 | USB Clock Input is UPLL. |