DTXFSTS4 

         Device IN Endpoint Transmit FIFO Status Register 4
Module Instance Base Address Register Address
i_usbotg_0_DWC_otg_intreg 0xFFB00000 0xFFB00998
i_usbotg_1_DWC_otg_intreg 0xFFB40000 0xFFB40998

Size: 32

Offset: 0x998

Access: RO

Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
Bit Fields
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

RESERVED

RO 0x0

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

INEPTxFSpcAvail

RO 0x0

DTXFSTS4 Fields

Bit Name Description Access Reset
31:16 RESERVED 
RESERVED
 RO 0x0
15:0 INEPTxFSpcAvail 
IN Endpoint TxFIFO Space Avail (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 0x0