gnptxfsiz
The application can program the RAM size and the memory start address for the Non-periodic TxFIFO. The fields of this register change, depending on host or device mode.
| Module Instance | Base Address | Register Address |
|---|---|---|
| usb0 | 0xFFB00000 | 0xFFB00028 |
| usb1 | 0xFFB40000 | 0xFFB40028 |
Offset: 0x28
Access: RW
Important: To prevent indeterminate
system behavior, reserved areas of memory must not be accessed by software or
hardware. Any area of the memory map that is not explicitly defined as a register
space or accessible memory is considered reserved.
| Bit Fields | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
Reserved |
nptxfdep RW 0x2000 |
||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
nptxfstaddr RW 0x2000 |
||||||||||||||
gnptxfsiz Fields
| Bit | Name | Description | Access | Reset |
|---|---|---|---|---|
| 29:16 | nptxfdep | Mode: Host only. for host mode, this field is always valid. The application can write a new value in this field. Programmed values must not exceed 8192 |
RW | 0x2000 |
| 13:0 | nptxfstaddr | Mode: Host only. for host mode, this field is always valid.This field contains the memory start address for Non-periodic Transmit FIFO RAM. This field is set from 16-8192 32 bit words. The application can write a new value in this field. Programmed values must not exceed 8192. |
RW | 0x2000 |