dtxfsts4
This register contains the free space information for the Device IN endpoint TxFIFO.
| Module Instance | Base Address | Register Address |
|---|---|---|
| usb0 | 0xFFB00000 | 0xFFB00998 |
| usb1 | 0xFFB40000 | 0xFFB40998 |
Offset: 0x998
Access: RO
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 |
|||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ineptxfspcavail RO 0x2000 |
|||||||||||||||
dtxfsts4 Fields
| Bit | Name | Description | Access | Reset |
|---|---|---|---|---|
| 15:0 | ineptxfspcavail | Indicates the amount of free space available in the Endpoint TxFIFO. Values are in terms of 32-bit words. 16'h0: Endpoint TxFIFO is full 16'h1: 1 word available 16'h2: 2 words available 16'hn: n words available (where 0 n 32,768) 16'h8000: 32,768 words available Others: Reserved |
RO | 0x2000 |