hptxfsiz
This register holds the size and the memory start address of the Periodic TxFIFO
| Module Instance | Base Address | Register Address |
|---|---|---|
| usb0 | 0xFFB00000 | 0xFFB00100 |
| usb1 | 0xFFB40000 | 0xFFB40100 |
Offset: 0x100
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 |
ptxfsize RW 0x2000 |
||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
ptxfstaddr RW 0x4000 |
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hptxfsiz Fields
| Bit | Name | Description | Access | Reset |
|---|---|---|---|---|
| 29:16 | ptxfsize | This value is in terms of 32-bit words. Minimum value is 16 Maximum value is 1024 The power-on reset value of this register is specified as the 1024. |
RW | 0x2000 |
| 14:0 | ptxfstaddr | The power-on reset value of this register is the sum of the Largest Rx Data FIFO Depth and Largest Non-periodic Tx Data FIFO. Programmed values must not exceed the power-on value |
RW | 0x4000 |