16.8.9 APBB Mask
| Name: | APBBMASK | 
| Offset: | 0x1C | 
| Reset: | 0x0000007F | 
| Property: | Write-Protected | 
| 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 | |
| Access | |||||||||
| Reset | 
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| USB | DMAC | PORT | NVMCTRL | DSU | PAC1 | ||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | 
Bit 5 – USB USB APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBB clock for the USB is stopped. | 
| 1 | The APBB clock for the USB is enabled. | 
Bit 4 – DMAC DMAC APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBB clock for the DMAC is stopped. | 
| 1 | The APBB clock for the DMAC is enabled. | 
Bit 3 – PORT PORT APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBB clock for the PORT is stopped. | 
| 1 | The APBB clock for the PORT is enabled. | 
Bit 2 – NVMCTRL NVMCTRL APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBB clock for the NVMCTRL is stopped. | 
| 1 | The APBB clock for the NVMCTRL is enabled. | 
Bit 1 – DSU DSU APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBB clock for the DSU is stopped. | 
| 1 | The APBB clock for the DSU is enabled. | 
Bit 0 – PAC1 PAC1 APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBB clock for the PAC1 is stopped. | 
| 1 | The APBB clock for the PAC1 is enabled. | 
